引用本文:张勇,罗滇生,范幸,等.非解析复变电力系统动态无功点优化配置[J].电力系统保护与控制,2015,43(8):28-34.
ZHANG Yong,LUO Diansheng,FAN Xing,et al.Optimization configuration of dynamic reactive power point fornon-analytical complex variable power system[J].Power System Protection and Control,2015,43(8):28-34
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非解析复变电力系统动态无功点优化配置
张勇1, 罗滇生1, 范幸1, 李剑辉2, 辛拓2, 毛弋1
1.湖南大学电气与信息工程学院，湖南 长沙 410082;2.广东电网公司电力调度控制中心，广东 广州 510000
摘要:
动态无功补偿装置在电网中无功补偿的效果很大程度上取决于补偿点的选择。从非解析复变电力系统的动态分析方法出发，指出阻抗模裕度指标是电压稳定性分析最直观的指标，并利用该指标对系统薄弱环节进行一个初步判定。然后分析了系统在暂态扰动下失稳的过程，指出暂态稳定裕度指标是描述系统暂态扰动过程稳定性的最本质指标，利用动态无功补偿装置可以改善此指标。在此基础上，提出了一种结合阻抗模裕度指标和暂态稳定裕度指标的动态无功优化配置方法，比较各种无功配置方案下暂态稳定裕度指标的提升值以得到最优配置方案。通过IEEE 39母线系统和广东电网220 kV网络算例说明了该方法的有效性。
关键词:  动态无功补偿装置  补偿点  阻抗模裕度  暂态稳定裕度  无功优化
DOI：10.7667/j.issn.1674-3415.2015.08.005
分类号:
基金项目:国家自然科学基金资助重点项目(61233008)；广东电网专题研究项目(036000QQ00120001)
Optimization configuration of dynamic reactive power point fornon-analytical complex variable power system
ZHANG Yong1, LUO Diansheng1, FAN Xing1, LI Jianhui2, XIN Tuo2, MAO Yi1
1.College of Electrical and Information Engineering, Hunan University, Changsha 410082, China;2.Guangdong Power Dispatch Center, Guangdong Power Grid Company, Guangzhou 510000, China
Abstract:
The effect of reactive power compensation largely depends on the reactive power compensation point selection. From the dynamic analysis methods for non-analytic complex variable power system, the impedance modulus margin index is pointed out to be the most intuitive indicator for voltage stability analysis, and it is used to preliminarily determinate weak line in system. Then this paper analyzes the system instable process under the transient disturbances, and points out that the transient stability margin is the essential indicator describing the stability of the system transient disturbance process, which can be quickly calculated by using extended equal area criterion. On the basis, a kind of dynamic reactive power optimization configuration method based on transient stability margin index is put forward, then the transient stability margin index increase values of various reactive power allocation schemes are compared to get the optimal one. By IEEE 39-bus system and the Guangdong Power Grid 220 kV network system examples, this method is proved to be effective.
Key words:  dynamic reactive power compensation device  compensation point  impedance modulus margin  transient stability margin  reactive power optimization
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