文章摘要
许涛,吴雪莲,李兆伟,等.改善系统频率稳定性的多直流功率紧急支援协调控制策略[J].电力系统自动化. DOI: 10.7500/AEPS20180603002.
许涛,WU Xuelian,李兆伟, et al.Coordinated Control Strategy of Multi-DC Emergency Power Support to Improve Frequency Stability of Power Systems[J].Automation of Electric Power Systems. DOI: 10.7500/AEPS20180603002.
改善系统频率稳定性的多直流功率紧急支援协调控制策略
Coordinated Control Strategy of Multi-DC Emergency Power Support to Improve Frequency Stability of Power Systems
DOI:10.7500/AEPS20180603002
关键词: 直流功率紧急支援  频率  多直流馈入  过负荷
KeyWords: emergency DC power support  frequency  multi-infeed  overload capacity
上网日期:2018-10-08
基金项目:
作者单位E-mail
许涛 国家电力调度控制中心 xutao@sgcc.com.cn 
吴雪莲 国电南瑞科技股份有限公司 wuxuelian@sgepri.sgcc.com.cn 
李兆伟 国电南瑞科技股份有限公司 lizhaowei1@sgepri.sgcc.com.cn 
张剑云 国家电力调度控制中心 zhangjianyun@sgcc.com.cn 
郄朝辉 国电南瑞科技股份有限公司 qiezhaohui@sgepri.sgcc.com.cn 
刘明松 国家电力调度控制中心 liumingsong@sgcc.com.cn 
方勇杰 南瑞集团有限公司 fangyongjie@sgepri.sgcc.com.cn 
张怡 国家电力调度控制中心 zhangyi@sgcc.com.cn 
王超 国家电力调度控制中心 wangchao@sgepri.sgcc.com.cn 
李威 国电南瑞科技股份有限公司 liwei10@sgepri.sgcc.com.cn 
庄侃沁 国家电网公司华东分部 zhuangkanqin@ec.sgcc.com.cn 
摘要:
      直流功率紧急支援能够有效改善多直流馈入电网在大功率缺额故障扰动后的系统频率稳定性。首先分析了直流功率紧急支援的原理,提出了一种综合考虑直流过负荷能力、直流运行工况和交流输电能力的单回直流实时可提升功率的估算方法。基于交流电网的安全稳定约束,提出了区域电网最大可支援能力的计算方法和“同送出同馈入”的多回直流实际支援量的协调优化算法。在此基础上,提出了改善系统频率稳定性的多直流功率紧急支援的协调控制技术方案,并在华东多直流馈入电网中进行了仿真验证。
Abstract:
      Emergency DC power support can effectively improve the frequency stability of multi-DC fed power grids after the high-power shortfall disturbance. Firstly, the principle of emergency DC power support was analyzed and a method to estimate DC real-time boost power with DC overload capacity, DC operating conditions and AC transmission capacity was proposed. Based on the safety and stability constraints of DC power transmission network, a method of calculating the maximum supportability of the regional power grid and the coordination and optimization algorithm of the actual support amount of DC with the same sending and same receiving end were proposed. On this basis, the frequency coordinated control technology scheme of multi-DC power emergency support was proposed and simulated in East China power grid.#$NLKeywords: emergency DC power support; frequency; multi-infeed; overload capacity
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