GB/T 31464-2022 The grid operation code English
This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 31464-2015 The grid operation code. In addition to structural adjustment and a number of editorial changes, the following technical deviations have been made with respect to GB/T 31464-2015:
— Terms and definitions of "retail electricity company", "renewable energy", "new energy", "distributed resources", "renewable energy station", "real-time control", "interruptible load", "electrochemical energy storage system", "connect", "power system security", "voltage stability", "frequency stability", "penetration rate of new energy installed capacity", "penetration rate of new energy electricity", “new energy simultaneous rate", "maximum simultaneous rate of new energy", "minimum simultaneous rate of new energy", "power monitoring system", "HVDC supplementary control", "cyber security", "cyber security management platform", "cyber security monitoring device", "electricity spot market", "ancillary services", "electricity ancillary service markets", "two completely independent communication channels" are added; — Terms and definitions of "grid connection" and "grid interconnection" are modified (see Clause 3);
— Terms and definitions of "scheduled outage" and "non-scheduled outage" are deleted (see 3.3.9 and 3.3.11 of Edition 2015);
— The requirements for new energy planning shall be carried out in tandem with grid planning are added [see 4.1.1.3, f)];
— The requirements for new energy planning to consider the inertia and dynamic reactive power reserve are added [see 4.1.2.1, b)];
— The requirements for AC and DC mutual adaptation and coordinated development in power system planning are added [see 4.1.2.1, h)];
— The requirements for the type, scale and layout of installed capacity in the power resource planning are added [see 4.1.2.1, i)];
— The relevant requirements for power system shall be integrated to build adequate regulatory capacity are added [see 4.1.2.1, j)];
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by China Electricity Council.
This document is under the jurisdiction of National Technical Committee 446 on Grid Operation and Control of Standardization Administration of China (SAC/TC 446).
Introduction
The regulatory document "Power Grid Operation Rules" issued by the former State Electricity Regulatory Commission focuses on management and responsibility, and clarifies the basic responsibilities, rights and obligations of power grid enterprises, their dispatching agencies and power grid users in all relevant stages of power grid operation. This document focuses on technical standards and working procedures. It specifies the technical conditions required for safe and stable operation of power grid in the planning, design and construction stage of power system, and clarifies the basic technical requirements and working procedures which the power grid enterprises and power generation enterprises must follow each other. It also specifies the basic technical requirements and working procedures for grid enterprises, power generation enterprises, power users must follow in grid access and grid operation, in order to ensure the safe and stable operation of power system and the social economic operation, industrial and agricultural production and normal order of people's life of China get reliable power guarantee.
The grid operation code
1 Scope
This standard specifies basic technical requirements and basic principles for grid operation and control.
This standard is applicable to power grid enterprises, power generation enterprises and power users, and relevant units for planning & design, construction, test commissioning and research and development as well as relevant management departments for power grid planning, design, grid connection, operation and other work.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute indispensable requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 755-2019 Rotating electrical machines - Rating and performance
GB/T 2900.49 Electrotechnical terminology - Power system protection
GB/T 2900.50 Electrotechnical terminology - Generation, transmission and distribution of electricity - General
GB/T 2900.52 Electrotechnical terminology - Generation transmission and distribution of electricity - Generation
GB/T 2900.57 Electrotechnical terminology - Generation, transmission and distribution of electricity - Operation
GB/T 2900.58 Electrotechnical terminology - Generation, transmission and distribution of electricity - Power system planning and management
GB/T 2900.59 Electrotechnical terminology - Generation transmission and distribution of electricity - Substations
GB/T 2900.68 Electrotechnical terminology - Telecommunication networks, teletraffic and operation
GB/T 7064 Specific requirements for cylindrical rotor synchronous machines
GB/T 7409.1 Excitation systems for synchronous machines - definitions
GB/T 7409.2 Excitation systems for synchronous machines - Part 2: Models for power system studies
GB/T 7409.3 Excitation system for synchronous electrical machines - Technical requirements of excitation system for large and medium synchronous generators
GB/T 7894 Fundamental technical specifications for hydro generators
GB/T 12325 Power quality - Deviation of supply voltage
GB/T 12326 Power quality - Voltage fluctuation and flicker
GB/T 13498 Terminology for high-voltage direct current (HVDC) transmission
GB/T 13729 Remote terminal unit equipment
GB/T 14285 Technical code for relaying protection and security automatic equipment
GB/Z 14429 Telecontrol equipment and systems - Part 1: General considerations - Section 3: Glossary
GB/T 14549 Quality of electric energy supply - Harmonics in public supply network
GB/T 15153.1 Telecontrol equipment and systems - Part 2: Operating conditions - Section 1: Power supply and electromagnetic compatibility
GB/T 15543 Power quality - Three-phase voltage unbalance
GB/T 15945 Power quality - Frequency deviation for power system
GB 17621 Specification of reservoir operation for large and medium-scale hydropower stations
GB/T 18482 Specification for start-up test of reversible pumped-storage units
GB/T 19963.1 Technical specification for connecting wind farm to power system - Part 1: On shore wind power
GB/T 19964 Technical requirements for connecting photovoltaic power station to power system
GB/T 20319 Code for acceptance of wind turbines generator systems
GB/T 20996.1 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 1: Steady-state conditions
GB/T 20996.2 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching
GB/T 20996.3 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 3: Dynamic conditions
GB/T 22239 Information security technology - Baseline for classified protection of information system security;
GB/T 25070 Information security technology - Technical requirements of security design for information system classified protection
GB/T 26399 Technical guide for electric power system security and stability control
GB/T 29319 Technical requirements for connecting photovoltaic power system to distribution network
GB/T 32900 Technical specification for relaying protection of photovoltaic power station
GB/T 33593 Technical requirements for grid connection of distributed resources
GB/T 34122 Technical specification for configuration of relaying protection and security automatic equipment of AC 220 kV ~ 750 kV grid
GB/T 36547 Technical rule for electrochemical energy storage system connected to power grid
GB/T 36572 Guidelines of cyber security protection for electric power system supervision and control
GB/T 36958 Information security technology - Technical requirements of security management center for classified protection of cybersecuriy
GB/T 37408 Technical requirements for photovoltaic gird-connected inverter
GB 38755 Code on security and stability for power system
GB/T 38969 Guide on technology for power system
GB/T 40427 Technical guidelines for power system voltage and reactive power
GB/T 40581 Calculation specification for power system security and stability
GB/T 40586 Technical requirements of grid-related protection of grid-connected power
GB/T 40591 Guide for setting test of power system stabilizer
GB/T 40594 Technical guide for power grid and source coordination
GB/T 40595 Guide for technology and test on primary frequency control of grid-connected power resource
GB/T 50293 Code for urban electric power planning
GB 50796 Code for acceptance of photovoltaic power project
GB/T 51121 Code for construction and acceptance of wind power project
DL/T 314 General specifications for power system under-voltage load-shedding and separation equipment
DL/T 315 General specifications for power system under-frequency load-shedding and separation equipment
DL/T 428 Technical requirements for automatic low frequency load shedding of power system
DL/T 436 Technical guide for HVDC overhead transmission lines
DL/T 437 Technical guide for DC high voltage earthing electrode
DL/T 497 Operation management code for automatic low frequency load shedding of power system
DL/T 507 Start-up test code for hydro-generating units
DL/T 516 Code for operation and administration of power dispatching automation system
DL/T 544 Operation management code for power system telecommunication
DL/T 545 Operation management code for microwave communication of power system
DL/T 546 Operation management code for power line carrier communication
DL/T 547 Operation management code for optical-fiber communication of power system
DL/T 548 Overvoltage protection code for communication station of power system
DL/T 559 Setting guide for 220kV ~ 750kV power system protections
DL/T 583 Specification for static commutated excitation systems and devices for large and medium hydraulic generators
DL/T 584 Setting guide for 3kV ~ 110kV power system protection equipment
DL/T 598 Technical specifications for automatic exchange telephone network of electric power system
DL/T 614 Multifunction electricity meterring equipment (A.C.)
DL/T 623 Evaluation rules of protection equipment and power system stability control devices
DL/T 657 Code for acceptance test of modulating control system in fossil fuel power plant
DL/T 684 Guide of calculating settings of relay protection for large generator and transformer
DL/Z 713 Immunity requirement for protection and control equipment in 500kV substation
DL/T 741 Operating code for overhead transmission line
DL/T 751 Specification of operation for hydraulic generators
DL/T 843 Specification for excitation system for synchronous generators
DL/T 970 Guide for abnormal and special operations and maintenances of large turbo-generators
DL/T 995 Testing regulations on protection and stability control equipment
DL/T 1210 Code for performance test and acceptance of automatic generation control in fossil fuel power plant
DL/T 1245 Technical guide for hydraulic turbine regulating system in grid
DL/T 1523 Guide on leading power factor operation test of synchronous generator
DL/T 1631 Technical specification for protection configuration and setting of grid-connected wind power plant
DL/T 1648 Technical specification of high and low voltage ride through for inverter in power plant and substation
DL/T 1707 Guide on automatic voltage control for power grid
DL/T 1802 Specification of automatic generation control and automatic voltage control system for hydropower plants
DL/T 1870 Technical specification for power grid and source coordination
DL/T 2246
(all parts) Technical specification for grid-connected operation and control of electrochemical energy storage station
DL/T 5002 Code for design of dispatch automation in district power grid
DL/T 5003 Code for design of dispatch automation in power system
DL/T 5131 The rural electric network construct and reconstruct technical guide
DL/T 5137 Technical code for designing electrical measuring and energy metering device
DL/T 5429 Technical code of design for the electric power system
DL/T 5439 Regulation for design depth of power plants connection to power system
DL/T 5444 Regulation of content and profundity for power system design
DL/T 5506 Technical code for design of electric power system relay protection
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.49, GB/T 2900.50, GB/T 2900.52, GB/T 2900.57, GB/T 2900.58, GB/T 2900.59, GB/T 2900.68, GB/T 13498, GB/Z 14429, GB/T 36547 and the following apply.
3.1 Basic name
3.1.1
power system
an integral system which consists of power generation, supply (transmission, transformation and distribution) and utilization facilities as well as regulation and control, relay protection, automatic safety device, measuring device, dispatching automation and electric power communication to ensure its normal operation.
3.1.2
power system operator
an entity which is responsible for organization, command, instruction and coordination of power grid operation and for the operation of electricity spot market, including auxiliary services
3.1.3
power grid enterprise
power enterprises who possess, operate and run the power grid
3.1.4.
power plant
power plant (field and station), which is connected to the power grid and uses firepower (fire coal, oil and gas and biomass), hydro, nuclear, wind force, solar, geothermal and ocean energy
3.1.5
power generation enterprise
power generation company connected to the power grid (in possession of one or more power plants) or the power enterprises in position of power plants
3.1.6
bulk grid customer
customers which directly conclude power purchase/selling contract with grid enterprises at province (municipality and autonomous region) level or the consumers which purchase power directly to the power generation enterprises through the grid, and establish a dispatching relationship with power grid dispatching agencies
3.1.7
user of grid
Power generation enterprises, including self-supply power plant who complete power generation or power consumption by power grid and the main grid supply users.
3.1.8
retail electricity company
power market technical support system and customer service platform that can meet the functions of quotation, information submission, contract signing, customer service and so on. Electricity can be purchased in the electricity market, and bilateral negotiated transactions or centralized transactions can be carried out through the power trading platform. Electricity market entities provide value-added services to users, including but not limited to contract energy management, comprehensive energy conservation, rational energy use consulting and operation and maintenance of electrical equipment.
3.1.9
renewable energy
non-fossil energies, like wind energy, solar energy, water energy, biomass energy, geothermal energy and ocean energy
3.1.10
new energy
various forms of energy developed and utilized to reduce greenhouse gas emissions
Note: New energy includes clean energy such as solar energy, wind energy, geothermal energy, ocean energy, biomass energy and nuclear fusion energy. At present, wind and solar energy are widely used, which are characterized by easy access, uncontrollable randomness, volatility and intermittency.
3.1.11
distributed resources
power supply distributed at the user side, connected to power grid with voltage grade of 35KV or below, and mainly consumed on the spot.
Note: Distributed resources including solar energy, natural gas, bioenergy, wind energy, hydroenergy, hydrogen energy, geothermal energy, ocean energy, power generation by comprehensive utilization of resources (including power generation by gas of coal mine) and stored energy, etc.
3.1.12
electric power customer
entity or person which consumes electric energy by grid
3.1.13
renewable energy station
a collection of all equipment below the connecting point of a wind farm or solar power plant that is centrally connected to the power system
Note: The renewable energy station includes transformers, bus bars, lines, converters, energy storage, wind turbines, photovoltaic power generation equipment, reactive power regulation equipment and auxiliary equipment.
3.1.14
interruptible load
a portion of load that the power user can interrupted, during peak hours of the grid or in an emergency, by signing a contract (agreement)
3.1.15
electrochemical energy storage system
a system in which electrochemical cells are used as energy storage carriers and recyclable electric energy is stored and released through a power conversion system
Foreword i
Introduction iii
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for planning, design and construction of grid operation
5 Connection, interconnection and access conditions
6 Grid operation
Annex A (Normative) Data and information exchange
Annex B (Normative) Time sequence in the grid connection procedure
Annex C (Normative) Equipment numbering and naming procedures
Annex D (Normative) Test items of grid connection (interconnection) commissioning
Annex E (Normative) Basic data required for system calculation
Annex F (Normative) Data required for short-circuit current calculation
Annex G (Normative) Data required for electromagnetic transient calculation
Annex H (Normative) Data required for power quality
Annex I (Normative) Data required for simulating calculation of voltage stability and mid- and long-term dynamic process
Bibliography
GB/T 31464-2022 The grid operation code English
This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 31464-2015 The grid operation code. In addition to structural adjustment and a number of editorial changes, the following technical deviations have been made with respect to GB/T 31464-2015:
— Terms and definitions of "retail electricity company", "renewable energy", "new energy", "distributed resources", "renewable energy station", "real-time control", "interruptible load", "electrochemical energy storage system", "connect", "power system security", "voltage stability", "frequency stability", "penetration rate of new energy installed capacity", "penetration rate of new energy electricity", “new energy simultaneous rate", "maximum simultaneous rate of new energy", "minimum simultaneous rate of new energy", "power monitoring system", "HVDC supplementary control", "cyber security", "cyber security management platform", "cyber security monitoring device", "electricity spot market", "ancillary services", "electricity ancillary service markets", "two completely independent communication channels" are added; — Terms and definitions of "grid connection" and "grid interconnection" are modified (see Clause 3);
— Terms and definitions of "scheduled outage" and "non-scheduled outage" are deleted (see 3.3.9 and 3.3.11 of Edition 2015);
— The requirements for new energy planning shall be carried out in tandem with grid planning are added [see 4.1.1.3, f)];
— The requirements for new energy planning to consider the inertia and dynamic reactive power reserve are added [see 4.1.2.1, b)];
— The requirements for AC and DC mutual adaptation and coordinated development in power system planning are added [see 4.1.2.1, h)];
— The requirements for the type, scale and layout of installed capacity in the power resource planning are added [see 4.1.2.1, i)];
— The relevant requirements for power system shall be integrated to build adequate regulatory capacity are added [see 4.1.2.1, j)];
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by China Electricity Council.
This document is under the jurisdiction of National Technical Committee 446 on Grid Operation and Control of Standardization Administration of China (SAC/TC 446).
Introduction
The regulatory document "Power Grid Operation Rules" issued by the former State Electricity Regulatory Commission focuses on management and responsibility, and clarifies the basic responsibilities, rights and obligations of power grid enterprises, their dispatching agencies and power grid users in all relevant stages of power grid operation. This document focuses on technical standards and working procedures. It specifies the technical conditions required for safe and stable operation of power grid in the planning, design and construction stage of power system, and clarifies the basic technical requirements and working procedures which the power grid enterprises and power generation enterprises must follow each other. It also specifies the basic technical requirements and working procedures for grid enterprises, power generation enterprises, power users must follow in grid access and grid operation, in order to ensure the safe and stable operation of power system and the social economic operation, industrial and agricultural production and normal order of people's life of China get reliable power guarantee.
The grid operation code
1 Scope
This standard specifies basic technical requirements and basic principles for grid operation and control.
This standard is applicable to power grid enterprises, power generation enterprises and power users, and relevant units for planning & design, construction, test commissioning and research and development as well as relevant management departments for power grid planning, design, grid connection, operation and other work.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute indispensable requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 755-2019 Rotating electrical machines - Rating and performance
GB/T 2900.49 Electrotechnical terminology - Power system protection
GB/T 2900.50 Electrotechnical terminology - Generation, transmission and distribution of electricity - General
GB/T 2900.52 Electrotechnical terminology - Generation transmission and distribution of electricity - Generation
GB/T 2900.57 Electrotechnical terminology - Generation, transmission and distribution of electricity - Operation
GB/T 2900.58 Electrotechnical terminology - Generation, transmission and distribution of electricity - Power system planning and management
GB/T 2900.59 Electrotechnical terminology - Generation transmission and distribution of electricity - Substations
GB/T 2900.68 Electrotechnical terminology - Telecommunication networks, teletraffic and operation
GB/T 7064 Specific requirements for cylindrical rotor synchronous machines
GB/T 7409.1 Excitation systems for synchronous machines - definitions
GB/T 7409.2 Excitation systems for synchronous machines - Part 2: Models for power system studies
GB/T 7409.3 Excitation system for synchronous electrical machines - Technical requirements of excitation system for large and medium synchronous generators
GB/T 7894 Fundamental technical specifications for hydro generators
GB/T 12325 Power quality - Deviation of supply voltage
GB/T 12326 Power quality - Voltage fluctuation and flicker
GB/T 13498 Terminology for high-voltage direct current (HVDC) transmission
GB/T 13729 Remote terminal unit equipment
GB/T 14285 Technical code for relaying protection and security automatic equipment
GB/Z 14429 Telecontrol equipment and systems - Part 1: General considerations - Section 3: Glossary
GB/T 14549 Quality of electric energy supply - Harmonics in public supply network
GB/T 15153.1 Telecontrol equipment and systems - Part 2: Operating conditions - Section 1: Power supply and electromagnetic compatibility
GB/T 15543 Power quality - Three-phase voltage unbalance
GB/T 15945 Power quality - Frequency deviation for power system
GB 17621 Specification of reservoir operation for large and medium-scale hydropower stations
GB/T 18482 Specification for start-up test of reversible pumped-storage units
GB/T 19963.1 Technical specification for connecting wind farm to power system - Part 1: On shore wind power
GB/T 19964 Technical requirements for connecting photovoltaic power station to power system
GB/T 20319 Code for acceptance of wind turbines generator systems
GB/T 20996.1 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 1: Steady-state conditions
GB/T 20996.2 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching
GB/T 20996.3 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 3: Dynamic conditions
GB/T 22239 Information security technology - Baseline for classified protection of information system security;
GB/T 25070 Information security technology - Technical requirements of security design for information system classified protection
GB/T 26399 Technical guide for electric power system security and stability control
GB/T 29319 Technical requirements for connecting photovoltaic power system to distribution network
GB/T 32900 Technical specification for relaying protection of photovoltaic power station
GB/T 33593 Technical requirements for grid connection of distributed resources
GB/T 34122 Technical specification for configuration of relaying protection and security automatic equipment of AC 220 kV ~ 750 kV grid
GB/T 36547 Technical rule for electrochemical energy storage system connected to power grid
GB/T 36572 Guidelines of cyber security protection for electric power system supervision and control
GB/T 36958 Information security technology - Technical requirements of security management center for classified protection of cybersecuriy
GB/T 37408 Technical requirements for photovoltaic gird-connected inverter
GB 38755 Code on security and stability for power system
GB/T 38969 Guide on technology for power system
GB/T 40427 Technical guidelines for power system voltage and reactive power
GB/T 40581 Calculation specification for power system security and stability
GB/T 40586 Technical requirements of grid-related protection of grid-connected power
GB/T 40591 Guide for setting test of power system stabilizer
GB/T 40594 Technical guide for power grid and source coordination
GB/T 40595 Guide for technology and test on primary frequency control of grid-connected power resource
GB/T 50293 Code for urban electric power planning
GB 50796 Code for acceptance of photovoltaic power project
GB/T 51121 Code for construction and acceptance of wind power project
DL/T 314 General specifications for power system under-voltage load-shedding and separation equipment
DL/T 315 General specifications for power system under-frequency load-shedding and separation equipment
DL/T 428 Technical requirements for automatic low frequency load shedding of power system
DL/T 436 Technical guide for HVDC overhead transmission lines
DL/T 437 Technical guide for DC high voltage earthing electrode
DL/T 497 Operation management code for automatic low frequency load shedding of power system
DL/T 507 Start-up test code for hydro-generating units
DL/T 516 Code for operation and administration of power dispatching automation system
DL/T 544 Operation management code for power system telecommunication
DL/T 545 Operation management code for microwave communication of power system
DL/T 546 Operation management code for power line carrier communication
DL/T 547 Operation management code for optical-fiber communication of power system
DL/T 548 Overvoltage protection code for communication station of power system
DL/T 559 Setting guide for 220kV ~ 750kV power system protections
DL/T 583 Specification for static commutated excitation systems and devices for large and medium hydraulic generators
DL/T 584 Setting guide for 3kV ~ 110kV power system protection equipment
DL/T 598 Technical specifications for automatic exchange telephone network of electric power system
DL/T 614 Multifunction electricity meterring equipment (A.C.)
DL/T 623 Evaluation rules of protection equipment and power system stability control devices
DL/T 657 Code for acceptance test of modulating control system in fossil fuel power plant
DL/T 684 Guide of calculating settings of relay protection for large generator and transformer
DL/Z 713 Immunity requirement for protection and control equipment in 500kV substation
DL/T 741 Operating code for overhead transmission line
DL/T 751 Specification of operation for hydraulic generators
DL/T 843 Specification for excitation system for synchronous generators
DL/T 970 Guide for abnormal and special operations and maintenances of large turbo-generators
DL/T 995 Testing regulations on protection and stability control equipment
DL/T 1210 Code for performance test and acceptance of automatic generation control in fossil fuel power plant
DL/T 1245 Technical guide for hydraulic turbine regulating system in grid
DL/T 1523 Guide on leading power factor operation test of synchronous generator
DL/T 1631 Technical specification for protection configuration and setting of grid-connected wind power plant
DL/T 1648 Technical specification of high and low voltage ride through for inverter in power plant and substation
DL/T 1707 Guide on automatic voltage control for power grid
DL/T 1802 Specification of automatic generation control and automatic voltage control system for hydropower plants
DL/T 1870 Technical specification for power grid and source coordination
DL/T 2246
(all parts) Technical specification for grid-connected operation and control of electrochemical energy storage station
DL/T 5002 Code for design of dispatch automation in district power grid
DL/T 5003 Code for design of dispatch automation in power system
DL/T 5131 The rural electric network construct and reconstruct technical guide
DL/T 5137 Technical code for designing electrical measuring and energy metering device
DL/T 5429 Technical code of design for the electric power system
DL/T 5439 Regulation for design depth of power plants connection to power system
DL/T 5444 Regulation of content and profundity for power system design
DL/T 5506 Technical code for design of electric power system relay protection
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.49, GB/T 2900.50, GB/T 2900.52, GB/T 2900.57, GB/T 2900.58, GB/T 2900.59, GB/T 2900.68, GB/T 13498, GB/Z 14429, GB/T 36547 and the following apply.
3.1 Basic name
3.1.1
power system
an integral system which consists of power generation, supply (transmission, transformation and distribution) and utilization facilities as well as regulation and control, relay protection, automatic safety device, measuring device, dispatching automation and electric power communication to ensure its normal operation.
3.1.2
power system operator
an entity which is responsible for organization, command, instruction and coordination of power grid operation and for the operation of electricity spot market, including auxiliary services
3.1.3
power grid enterprise
power enterprises who possess, operate and run the power grid
3.1.4.
power plant
power plant (field and station), which is connected to the power grid and uses firepower (fire coal, oil and gas and biomass), hydro, nuclear, wind force, solar, geothermal and ocean energy
3.1.5
power generation enterprise
power generation company connected to the power grid (in possession of one or more power plants) or the power enterprises in position of power plants
3.1.6
bulk grid customer
customers which directly conclude power purchase/selling contract with grid enterprises at province (municipality and autonomous region) level or the consumers which purchase power directly to the power generation enterprises through the grid, and establish a dispatching relationship with power grid dispatching agencies
3.1.7
user of grid
Power generation enterprises, including self-supply power plant who complete power generation or power consumption by power grid and the main grid supply users.
3.1.8
retail electricity company
power market technical support system and customer service platform that can meet the functions of quotation, information submission, contract signing, customer service and so on. Electricity can be purchased in the electricity market, and bilateral negotiated transactions or centralized transactions can be carried out through the power trading platform. Electricity market entities provide value-added services to users, including but not limited to contract energy management, comprehensive energy conservation, rational energy use consulting and operation and maintenance of electrical equipment.
3.1.9
renewable energy
non-fossil energies, like wind energy, solar energy, water energy, biomass energy, geothermal energy and ocean energy
3.1.10
new energy
various forms of energy developed and utilized to reduce greenhouse gas emissions
Note: New energy includes clean energy such as solar energy, wind energy, geothermal energy, ocean energy, biomass energy and nuclear fusion energy. At present, wind and solar energy are widely used, which are characterized by easy access, uncontrollable randomness, volatility and intermittency.
3.1.11
distributed resources
power supply distributed at the user side, connected to power grid with voltage grade of 35KV or below, and mainly consumed on the spot.
Note: Distributed resources including solar energy, natural gas, bioenergy, wind energy, hydroenergy, hydrogen energy, geothermal energy, ocean energy, power generation by comprehensive utilization of resources (including power generation by gas of coal mine) and stored energy, etc.
3.1.12
electric power customer
entity or person which consumes electric energy by grid
3.1.13
renewable energy station
a collection of all equipment below the connecting point of a wind farm or solar power plant that is centrally connected to the power system
Note: The renewable energy station includes transformers, bus bars, lines, converters, energy storage, wind turbines, photovoltaic power generation equipment, reactive power regulation equipment and auxiliary equipment.
3.1.14
interruptible load
a portion of load that the power user can interrupted, during peak hours of the grid or in an emergency, by signing a contract (agreement)
3.1.15
electrochemical energy storage system
a system in which electrochemical cells are used as energy storage carriers and recyclable electric energy is stored and released through a power conversion system
Contents of GB/T 31464-2022
Foreword i
Introduction iii
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements for planning, design and construction of grid operation
5 Connection, interconnection and access conditions
6 Grid operation
Annex A (Normative) Data and information exchange
Annex B (Normative) Time sequence in the grid connection procedure
Annex C (Normative) Equipment numbering and naming procedures
Annex D (Normative) Test items of grid connection (interconnection) commissioning
Annex E (Normative) Basic data required for system calculation
Annex F (Normative) Data required for short-circuit current calculation
Annex G (Normative) Data required for electromagnetic transient calculation
Annex H (Normative) Data required for power quality
Annex I (Normative) Data required for simulating calculation of voltage stability and mid- and long-term dynamic process
Bibliography
