基于TPLAN的中国南方电网可靠性与经济性评估  

Reliability and economic evaluation of China Southern Power Grid based on TPLAN

作　　者：王超[1] 徐政[1] 高慧敏[1] 

机构地区：[1]浙江大学电机系,浙江杭州310027

出　　处：《继电器》2006年第16期61-67,共7页Relay

基　　金：国家自然科学基金资助项目(50277034)

摘　　要：南方电网是我国目前唯一投入运行的超高压、远距离、交直流并列输电的大型区域电网,其可靠性与经济性分析具有重要意义。首先探讨了交直流并联系统可靠性评估的特殊性及研究进展,并对发输电系统可靠性评估软件TPLAN的特点、方法和功能进行了简要介绍。利用该软件对南方电网进行了可靠性与经济性评估。通过计算系统整体可靠性指标,得出南方电网停电影响的严重级别为2级。通过计算各省区及主要负荷点的可靠性指标,得出广东省电网的可靠性水平最低,是整个南方电网的薄弱环节。引入用户停电损失函数的概念,对南方电网进行了经济性评估,计算出全网及各省的经济性指标。此外,还研究了系统可靠性评估结果对元件可靠性参数的灵敏度问题。上述分析所得结论对于今后南方电网及全国电网的规划、运行都有较高的工程意义和参考价值。China Southern Power Grid is now the only long-distance and huge capacity power system with AC and DC transmission lines in parallel in China. Its reliability and economic evaluation is of great engineering value. This paper discusses the particularity of hybrid AC/DC power system and introduces the reliability evaluation software package TPLAN respectively. By calculating the system reliability indices, this paper gets an overview of the reliability of China Southern Power Grid, and draws the conclusion that its severity grade is Grade 2. By calculating the area and load bus reliability indices, the conclusion is drawn that Guangdong Province is the most unsubstantial part of China Southern Power Grid. In order to improve the reliability of China Southern Power Grid, it should pay special attention to improve the reliability of Guangdong province first. The conclusion is confirmed by the economic evaluation of China Southern Power Grid based on the concept of CCDF. Once the algorithm is selected, the statistic data will affect the results greatly. The sensitivity of evaluation results to statistic data is studied. All these conclusions are very valuable for later operation and planning of power system in China.

关 键 词：南方电网 大规模发输电系统 交直流系统 可靠性 经济性 灵敏度分析 解析法 TPLAN 

分 类 号：TM732[电气工程—电力系统及自动化]