Voltage Stability Analysis of Gaoling DC Transmitting System After Operation of Kuanbang Project

LIU Yang; WANG Congying; JIN Yiding; YUE Han; WANG Zhenyu; WANG Chao; ZENG Hui; YANG Weiwei; WANG Kefei

doi:10.14044/j.1674-1757.pcrpc.2020.02.021

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Voltage Stability Analysis of Gaoling DC Transmitting System After Operation of Kuanbang Project

更新时间：2024-09-14

- Voltage Stability Analysis of Gaoling DC Transmitting System After Operation of Kuanbang Project
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 2, Pages: 116-121(2020)
- 作者机构：
  
  1. 国家电网公司东北分部
  2. 中国能源建设集团辽宁电力勘测设计院有限公司
  3. 国家电网有限公司
  4. 国家电网公司辽宁电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.02.021
  CLC： TM712;TM721.1
- Published：2020，
- 稿件说明：
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[1]刘洋,王聪颖,金一丁,岳涵,王震宇,王超,曾辉,杨巍巍,王克非.宽邦工程投运后高岭直流送端系统电压稳定分析[J].电力电容器与无功补偿,2020,41(02):116-121.

LIU YANG, WANG CONGYING, JIN YIDING, et al. Voltage Stability Analysis of Gaoling DC Transmitting System After Operation of Kuanbang Project. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 116-121.
[1]刘洋,王聪颖,金一丁,岳涵,王震宇,王超,曾辉,杨巍巍,王克非.宽邦工程投运后高岭直流送端系统电压稳定分析[J].电力电容器与无功补偿,2020,41(02):116-121. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.021.

LIU YANG, WANG CONGYING, JIN YIDING, et al. Voltage Stability Analysis of Gaoling DC Transmitting System After Operation of Kuanbang Project. [J]. Power capacitor & reactive power compensation, 2020, 41(2): 116-121. DOI： 10.14044/j.1674-1757.pcrpc.2020.02.021.

摘要

宽邦工程投运前

高岭背靠背直流（以下简称高岭直流）送端系统存在电压支撑能力不足、交流线路故障后直流闭锁问题。宽邦工程投运后

高岭直流增加了一条至东北电网主网的交流通道。直流及其配套工程的安全稳定分析中常用潮流分析、短路比分析、暂态稳定分析等方法

本文在此基础上增加了静态电压稳定分析

最后针对高岭直流送端近区交流线路故障后的电压稳定问题提出了预控直流功率和利用稳控装置回降直流功率的控制策略

该策略可提升高岭直流稳定水平并已应用于实际运行。本文所应用的分析方法和控制策略在直流系统及其配套工程稳定分析中具有一定的适用性。

Abstract

Before the operation of the Kuanbang project

the Gaoling back-to-back DC（here in after referred to as the Gaoling DC） transmitting system has such problem as insufficient voltage support capability and DC blocking after the fault of AC line.After operation of Kuangang project

a channel to the truck of northeast grid is added from Gaoling DC.Power flow analysis

short-circuit ratio analysis

transient stability analysis

etc.are commonly used in the stability analysis of DC and its supporting projects.In this paper

static voltage stability analysis based on the forward analysis is added.Finally

the control strategies of pre-control DC power and returning DC power by the stability control device are proposed for the voltage stability problem after the fault of the near-area AC system in the Gaoling DC transmission terminal.This strategy can improve the stability of Gaoling DC and has been applied for actual operation.The analysis method and control strategy used in this paper have a definite applicability in the stability analysis of DC system and its accessory project.

关键词

高岭直流输电能力电压稳定控制策略

Keywords

Gaoling DCtransmission capacityvoltage stabilitycontrol strategy

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