基于连续潮流综合算法的电压稳定性研究.pdfVIP

第 39 卷 第 6 期 电力系统保护与控制 Vol.39 No.6 2011 年3 月 16 日 Power System Protection and Control Mar.16, 2011 基于连续潮流综合算法的电压稳定性研究 1 1 2 1 1 吴 昊 ，卫志农 ，王成亮 ，姜理源 ，陈 鹏 （1.河海大学能源与电气学院，江苏 南京 210098；2.江苏方天电力技术有限公司，江苏 南京 211102） 摘要：远距离送电及重负荷运行导致电网运行在电压稳定裕度较低的工作点，如何改善静态电压稳定预防控制受到广泛的关 注。提出了一种基于连续潮流（CPF）的遗传退火法的综合优化算法，通过优化有载调压变压器和PV节点电压量，求解系统 电网的最大静态电压稳定裕度。利用 IEEE 9 节点、IEEE 14 节点系统，考虑负荷增长模型，分别用 CPF 法、基于 CPF 的遗 传算法及基于CPF的遗传退火法对最大电压稳定裕度计算，并对结果进行比较，验证了该算法的有效性。 关键词：稳定裕度；连续潮流；遗传算法；Metropolis准则；模拟退火法 Voltage stability study based on synthesis method of continuous power flow 1 1 2 1 1 WU Hao ，WEI Zhi-nong ，WANG Cheng-liang ，JIANG Li-yuan ，CHEN Peng （1. Hohai University，Nanjing 210098 ，China ；2. Fangtian Electric Power Technology Co. Ltd，Nanjing 211102 ，China ） Abstract ：Because of the long distance transmission and the heavy load ，the power network operates at a lower voltage stability margin ．Thus，how to improve the preventive control of the steady-state voltage stability of power system has attracted a wide spread attention ．In this paper，a comprehensive optimization algorithm for genetic annealing algorithm based on continuous power flow (CPF) is introduced ．By optimizing the on-load tap changer and PV node voltage，it can obtain the maximum static voltage stability margin of power system ．The maximum stability margin is calculated with the method of CPF，genetic algorithm based on CPF，and the genetic annealing algorithm based on CPF respectively ，using the IEEE 9-bus system and IEEE 14-bus system and considering the load increasing modes ．The new algorithm is verified to be effective by comparing each result ． This work is supported by National Natural Science Foundation of China