| 引用本文: | 李生虎,于丽萍,董王朝.含TCSC电力系统可靠性非同调分析[J].电力系统保护与控制,2016,44(14):1-7.[点击复制] |
| LI Shenghu,YU Liping,DONG Wangchao.Analysis of reliability non-coherence of power systems with TCSC[J].Power System Protection and Control,2016,44(14):1-7[点击复制] |
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| 摘要: |
| 判别非同调元件及其参数，有助于改善电力系统可靠性。计及可控串补及其旁路断路器，建立可控串补线路三状态模型，继而建立含串补线路电力系统可靠性解析模型。从串补线路输电能力和系统失负荷概率两个角度，分析可靠性参数非同调和元件非同调，定义同调裕度，推导非同调临界条件。量化了补偿度、可靠性参数、系统负荷水平、串补线路载荷约束对非同调的影响。算例结果表明:可控串补或断路器不可用率大于临界值时系统非同调；补偿度越小、负荷水平越低、串补线路载荷约束范围越宽，系统非同调越容易发生；相比可控串补，断路器故障更易使系统非同调。 |
| 关键词: 可靠性非同调 可控串补 同调裕度 临界非同调 断路器 |
| DOI：10.7667/PSPC151456 |
| 投稿时间：2015-08-18修订日期：2015-10-22 |
| 基金项目:国家自然科学基金(51277049) |
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| Analysis of reliability non-coherence of power systems with TCSC |
| LI Shenghu,YU Liping,DONG Wangchao |
| (School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China) |
| Abstract: |
| Recognizing the non-coherent components helps to improve reliability of power systems. Considering stochastic failure of thyristor controlled series capacitor (TCSC) and its circuit breaker, a three-state model is proposed for the series-compensated line, based on which the analytical reliability model for the power systems is derived. Parameter and component non-coherences are analyzed based on the transmission capability of the line with TCSC and loss of load probability (LOLP) of the system. Coherence margin is defined and the critical condition of non-coherence is given. Impacts of compensation degree, reliability parameters, load level, and loading constraint on non-coherence are analyzed. The numerical results show that the system is non-coherent when the reliability parameter of the series compensator or its breaker is larger than the critical value. Less compensation degree, lower load level, or higher loading constraint yields higher possibility of reliability non-coherence. System non-coherence is more vulnerable to the series component than the circuit breaker of the TCSC. This work is supported by National Natural Science Foundation of China (No. 51277049). |
| Key words: reliability non-coherence TCSC coherence margin critical non-coherence circuit breaker |
