Standard No.:	GB/T 30137-2013
English Name:	Power Quality - Voltage Dips and Short Interruptions
Chinese Name:	电能质量 电压暂降与短时中断
Chinese Classification:	K04    Basic standards and general methods
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ;SAC
Issued on:	2013-12-17
Implemented on:	2014-5-10
Status:	superseded
Superseded by:	GB/T 30137-2024
Superseded on:	2025-4-1
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	150.0
Delivery:	via email in 1 business day

1 Scope This Standard specifies the indexes as well as testing, statistics and assessment methods of voltage dip and short interruption. This Standard is applicable to AC 50Hz power system. 2 Normative References The following documents are indispensable for the application of this Standard. For dated reference, only the dated edition applies. For undated reference, the latest edition (including all amendments) applies. GB/T 19862 General Requirements for Power Quality Monitoring Equipment 3 Terminologies and Definitions For the purposes of this document, the following terminologies and definitions apply. 3.1 Voltage dip (sag) It refers to the phenomenon that the power frequency voltage’s root mean square (RMS) of some point in the power system suddenly drops to 0.1p.u~0.9p.u, and returns to normal after temporarily sustaining for 10ms~1min.

Foreword I 1 Scope 2 Normative References 3 Terminologies and Definitions 4 Statistics and Recommended Indexes of Voltage Dip and Short Interruption Events 5 Detection of Voltage Dip and Short Interruption 6 Monitoring of voltage dip and short interruption 7 Assessment of Voltage Dip and Short Interruption Appendix A (Informative) Tolerance Curve Appendix B (Informative) Critical Distance and Dip Areas Bibliography