多特高压直流参与受端“强直弱交”电网安全防线的协调控制技术

doi:10.11930/j.issn.1004-9649.201707120

中国电力 ›› 2018, Vol. 51 ›› Issue (10): 72-79.DOI: 10.11930/j.issn.1004-9649.201707120

多特高压直流参与受端“强直弱交”电网安全防线的协调控制技术

袁森¹, 陈得治², 陈涛³, 汤伟⁴, 马世英², 罗亚洲⁵, 宋云亭², 任建文¹, 訾鹏⁵, 王青², 李再华²

1. 华北电力大学电气与电子工程学院, 河北保定 071003;
2. 中国电力科学研究院有限公司, 北京 100192;
3. 国网重庆市电力公司, 重庆 400015;
4. 国网安徽省电力有限公司, 安徽合肥 230061;
5. 国家电网公司华北电力调控分中心, 北京 100053

收稿日期:2017-07-18 修回日期:2018-03-21 出版日期:2018-10-05 发布日期:2018-10-12
作者简介:袁森(1994-),男,硕士研究生,从事电力系统分析、安全和控制研究,E-mail:ncepu_yuansen@163.com
基金资助:
国家电网公司科技项目（多交流特高压通道强耦合大受端电网稳定控制及系统保护方案研究，XT71-16-043）。

Coordinated Control of Multi-HVDC Participating in Three Defense Line at the Receiving End of the Power System with Strong DC and Weak AC

YUAN Sen¹, CHEN Dezhi², CHEN Tao³, TANG Wei⁴, MA Shiying², LUO Yazhou⁵, SONG Yunting², REN Jianwen¹, ZI Peng⁵, WANG Qing², LI Zaihua²

1. School of Electrical and Electronic Engineering, North China Electric Power University, Baoding 071003, China;
2. China Electric Power Research Institute, Beijing 100192, China;
3. State Grid Chongqing Electric Power Company, Chongqing 400015, China;
4. State Grid Anhui Electric Power Company Ltd., Hefei 230061, China;
5. North China Branch of State Grid Power Dispatch & Control Center, Beijing 100053, China

Received:2017-07-18 Revised:2018-03-21 Online:2018-10-05 Published:2018-10-12
Supported by:
This work is supported by Science and Technology Project of State Grid of Corporation of China (Research on Stable Control and System Protection Scheme for the Large Receiver-side Power Grid of Multi-AC UHV Channel Strong Coupling, No.XT71-16-043).

摘要/Abstract

摘要： 特高压直流以其快速、灵活的调控特点成为电网运行中有效的控制手段，结合实际电网，研究特高压直流控制在电网安全防御的作用及功能尤其必要。结合中国典型的受端电网“强直弱交”实际场景，仿真分析了强直流冲击弱交流的安全稳定风险，提出了应对直流闭锁风险的特高压直流参与受端电网三道安全防线的控制策略，包括：特高压直流功率预控；特高压直流与切负荷等安控的紧急协调控制策略；弱交流通道解列后特高压直流与低频减载的协调配合策略等。仿真验证了受端电网的直流闭锁冲击特性及直流参与安控防线策略的合理性。

关键词: 强直弱交, 直流闭锁, 三道防线, 直流功率预控, 直流功率紧急调制, 协调控制

Abstract: Ultra high voltage direct current (UHVDC) is characterized by fast and flexible control, thus has been widely adopted to implement effective power control in power systems. It is of great significance to investigate the capability of UHVDC in power system risk defense. The potential risk of power system operation under the condition of weak AC and strong DC is analyzed, which is a typical engineering problem in China. Based on the analysis, the control strategies are proposed that involve UHVDC in the three-defense-line control at the receiving end of power systems, so as to counter the risk of DC blocking. The proposed control strategies include:pre-control of active power of UHVDC, coordinated control of UHVDC and load shedding, coordinated control of UHVDC and under-frequency load shedding in the occurrence of the breaking of weak AC connection. The validity of the proposed methods is verified by simulation.

Key words: strong DC and weak AC, DC blocking, three defense line, pre-control measures of active power of HVDC, emergency modulation of HVDC, coordinated control

中图分类号:

TM761

袁森, 陈得治, 陈涛, 汤伟, 马世英, 罗亚洲, 宋云亭, 任建文, 訾鹏, 王青, 李再华. 多特高压直流参与受端“强直弱交”电网安全防线的协调控制技术[J]. 中国电力, 2018, 51(10): 72-79.

YUAN Sen, CHEN Dezhi, CHEN Tao, TANG Wei, MA Shiying, LUO Yazhou, SONG Yunting, REN Jianwen, ZI Peng, WANG Qing, LI Zaihua. Coordinated Control of Multi-HVDC Participating in Three Defense Line at the Receiving End of the Power System with Strong DC and Weak AC[J]. Electric Power, 2018, 51(10): 72-79.

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多特高压直流参与受端“强直弱交”电网安全防线的协调控制技术

Coordinated Control of Multi-HVDC Participating in Three Defense Line at the Receiving End of the Power System with Strong DC and Weak AC

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