Standard No.:	DL/T 5226-2005
English Name:	Technical rule for designing network computerized monitoring and control system in fossil fuel power plant
Chinese Name:	火力发电厂电力网络计算机监控系统设计技术规定
Professional Classification:	DL    Professional Standard - Electricity
Source Content Issued by:	NDRC
Issued on:	2005-2-14
Implemented on:	2005-6-1
Status:	superseded
Superseded by:	DL/T 5226-2013 Technical Code for the Design of Network Computerized Monitoring and Control System in Power Plant
Superseded on:	2014-4-1
Target Language:	English
File Format:	PDF
Word Count:	7000 words
Translation Price(USD):	170.0
Delivery:	via email in 1 business day

1 Scope This standard specifies the leading principles to be followed in the design, when the network computerized monitoring and control system (hereinafter referred to as NCS) is adopted in the fossil fuel power plant. This standard is applicable to the design of NCS in fossil fuel power plant. The constructed network in fossil fuel power plant where the unit capacity is 125 MW or above and the outgoing line voltage is 220 kV or above should be monitored and controlled by the computer. When the unit electrical system is monitored and controlled by DCS, the network should be monitored and controlled by the computer to be in harmony with the automation level of the whole plant. The power plants in the foreign projects, the extended and renovated power plants of the equivalent capacity or the small and medium power plants with the unit capacity below 125 MW may refer to this standard.

Contents Foreword i 1 Scope 2 Normative References 3 Terms and Definitions 4 General Provisions 5 System Composition 6 System Functions 7 Signal Input/Output 8 Communication Interface and its Protocol 9 Site and Environment 10 Power Supply 11 Grounding 12 Cable Selection and Laying Appendix A (Informative) Input/Output Signal