特高压直流闭锁引发送端电网过频的系统保护方案

SHAO Guanghui

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特高压直流闭锁引发送端电网过频的系统保护方案

更新时间：2025-08-13

- 特高压直流闭锁引发送端电网过频的系统保护方案
- Automation of Electric Power Systems Vol. 42, Issue 22, Pages: 26-31(2018)
- 作者机构：
  
  国家电网有限公司东北分部,辽宁省,沈阳市,110180
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2018
- 稿件说明：
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SHAO Guanghui. [J]. Automation of electric power systems, 2018, 42(22): 26-31.
DOI：

SHAO Guanghui. [J]. Automation of electric power systems, 2018, 42(22): 26-31. DOI：

摘要

针对无配套电源的特高压直流高比例外送电网面临的运行风险，设计了抵御直流闭锁故障下电网过频风险的系统保护方案。提出了涵盖送端电网风、水、火等电源的系统保护双层结构；研究了面向多对象的实时信息通信复接技术，以满足主站和多个执行站实时通信的需求；根据不同类型电源的特点及对电网安全运行的影响，提出了直流调制和风、水、火等电源全局优化控制策略。基于实际电网仿真验证了所提系统保护方案的有效性和实用性。

Abstract

A system protection scheme against operation risk faced by the ultra-high voltage direct current(HVDC)without corresponding direct power supply is designed

which can resist the over-frequency risk under the HVDC blocking fault. Double-layer structure of system protection covering wind

hydro and thermal power of sending-end power grid is put forward. The multi-object oriented real-time information communication multiplexing technology is studied to meet the communication requirements between master station and multiple execution stations. According to the characteristics of different types of power and its influence on the safe operation of power grid

the DC modulation and global optimization control strategy of wind

hydro and thermal power is presented. The simulation on a real power system shows the effectiveness and practicability of the proposed system protection strategy.

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