高压直流低负荷无功优化功能运行分析

XIAO Ming; FU Chuang; LIANG Zhifei

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高压直流低负荷无功优化功能运行分析

更新时间：2025-08-13

- 高压直流低负荷无功优化功能运行分析
- Automation of Electric Power Systems Vol. 34, Issue 15, Pages: 91-95(2010)
- 作者机构：
  
  1. 南方电网电力调度通信中心,广东省,广州市,510623
  2. 南方电网技术研究中心,广东省,广州市,510623
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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XIAO Ming, FU Chuang, LIANG Zhifei. [J]. Automation of electric power systems, 2010, 34(15): 91-95.
DOI：

XIAO Ming, FU Chuang, LIANG Zhifei. [J]. Automation of electric power systems, 2010, 34(15): 91-95. DOI：

摘要

高压和特高压直流输电系统中的低负荷无功优化功能对换流站及邻近厂站的电压调控有着非常重要的作用。文中介绍了高压直流低负荷无功优化功能的原理及其在南方电网高压和特高压直流输电系统中的2种不同实现方式，分析了该功能的实际运行特性和应用效果。结合整流换流站及邻近厂站注入无功与电压灵敏度分析计算，验证了在直流低功率运行时低负荷无功优化功能对减少直流向交流系统注入的过剩无功、改善系统电压水平、丰富电压调控手段方面的积极作用和实际效果。实际应用表明，低负荷无功优化功能可以明显改善直流启停和低负荷运行时的系统电压。最后就实际运行对如何进一步完善该功能进行了分析，并提出了相关建议。

Abstract

The low load reactive power optimization in HVDC/UHVDC system plays an important role in voltage regulation for converter station and nearby substations. The principle of low load reactive power optimization（LLRPO） function is described and two kinds of LLRPO function of HVDC/UHVDC with different modes of implementation in China Southern Power Grid（CSG） are proposed. The corresponding performance and characteristics of the two functions are analyzed. The actual data of reactive power injection and bus voltage sensitivity analysis of rectifier station and nearby substations show that LLRPO function could significantly reduce reactive power exchange between DC and AC system under low DC transmission level so as to improve the system voltage quality and provide an efficient alternative of voltage regulation. Application shows that the LLRPO function can improve the voltage in the process of HVDC/UHVDC startup/shutdown and the low-load operating condition. Finally， suggestions are made for improving the LLRPO function in practice. The work is supported by National Mega-projects of Science Research for the 11th Five-year Plan（No. 2006BAA02A30）.

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