GB/T 20996.3-2020 in English

VALID

Performance of high-voltage direct current (HVDC) systems with line-commutated converters—Part 3:Dynamic conditions

Issued on:2020-12-14
Implemented on:2021-07-01
File Format:PDF
Delivery:Via email within 5 business days

Price(USD)： $490.00
$476.00

Standard No:	GB/T 20996.3-2020
Document status:	VALID
Title in English:	Performance of high-voltage direct current (HVDC) systems with line-commutated converters—Part 3:Dynamic conditions
Title in Chinese:	采用电网换相换流器的高压直流系统的性能第3部分：动态
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 5 business days
Issued on:	2020-12-14
Implemented on:	2021-07-01
Superseding:	GB/Z 20996.3-2007 Performance of high-voltage direct current (HVDC)systems—Part 3:Dynamic conditions
Chinese Classification:	K46-Power semiconductor device and parts
Professional Classification:	GB-National Standard
Related Keywords:	dynamic performance control dynamic adjustment range cooperative control dynamic conditions introduction analysis line-commutated converters methods harmonic control characteristic/non-characteristic
Related Topics:	mobile phase tolerance mobile phase flow Splitter Dynamics HVDC Standard mobile phase system Splitter Dynamics mobile phase for c3 column mobile phase system pressure flow Component Mobile Phase+ Component mobile phase mobile phase instrument Normal phase exchange reversed phase mobile phase Mobile phase for normal phase systems mobile phase analysis flow net How often should the mobile phase be changed? Normal Phase System Replacement Instrument mobile phase mobile phase system mobile phase is hot mobile phase high frequency transducer mobile phase interaction Direct Network The role of mobile phase low pressure mobile phase Normal Phase System Mobile Phase mobile phase use Change mobile phase system high energy transducer mobile phase instrument Replace mobile phase GB/T 20996.3 GB/T 20996.3-2020 DC system power quality Replace the reverse phase system with a normal phase system How many days does the salty mobile phase last? The purpose of adding acid to the mobile phase mobile phase acidity Replacement of normal phase system with reverse phase system Alkaline mobile phase

《GB/T 20996.3-2020采用电网换相换流器的高压直流系统的性能第3部分：动态》由TC60（全国电力电子系统和设备标准化技术委员会）归口，TC60SC2（全国电力电子系统和设备标准化技术委员会输配电系统电力电子技术分会）执行，主管部门为中国电器工业协会。

Introduction

Analysis of the core content of the standard

Technical field	Key requirements	Test methods
Harmonic control	Characteristic/non-characteristic harmonic suppression, resonant frequency avoidance	Real-time simulation verification
Subsynchronous resonance	UIF≤0.1 screening threshold, SSDC controller design	Shaft torsional vibration test

Key points of dynamic performance control

The standard clearly requires that converters must have the following:

10-20ms fast reactive power regulation capability
±3° trigger angle dynamic adjustment range
Cooperative control with SVC/STATCOM

Typical application cases show that when ESCR<2.0, it is necessary to configure synchronous phase condenser or static synchronous compensation device to maintain voltage stability.

Implementation suggestions

Nuclear power plant supporting projects should pay special attention to:

Increase DC system redundancy design
Configure dual SSDC controllers
Limit the number of restart shocks (≤3 times/24h)

More samples: GB 50021-2001(2009) YD/T 3934-2021 JJG 21-2008

Sample only — not a preview of GB/T 20996.3-2020

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