摘要
母线电压越限是电网运行中最常见的紧急状态之一。传统的电压校正控制方法在选择目标函数时忽视了电力市场大环境 ,没有考虑负荷等级、数量的区别 ,对不同的用户提供同样的安全供电等级 ,有失公允 ;并且其算法也有所欠缺 ,校正效果不够理想。本文引入了综合电压安全裕度的概念 ,以电网综合电压安全裕度最大为目标函数 ,计及了负荷等级、负荷量和参与调整设备数量的因素。并且采用改进的模式法来求解控制量 ,减少了迭代求解次数和计算误差 ,增强了控制效果。同时探讨了计算中存在的问题和可能的解决方法。仿真试验表明 :本方法是合理的和可行的 ,具有一定的实用意义。
Bus voltage over-limit is one of the most common emergency states in power operation.In traditional voltage corrective control method,the circumstance of power market,as well as the difference among load levels and load quantities,is ignored in the selection of objective function.It is unfair to supply the same security level of power to different customers.There are some deficiencies in their algorithms and their corrective effect are not very satisfying.In this paper the concept of general extent of voltage security(GEVS)is introduced,and it uses the maximization of GEVS of power system as objective function,allowing for load level,load quantity and the quantity of regulators.Using modified pattern search mothed to solve corrective variables can reduce the times of iteration and computation error,and improve the corrective effect.Meanwhile,the problems in computation and possible solutions are discussed.Simulated experiment demonstrates that,the above method is reasonable,feasible,and practical to some extent.
出处
《安徽电力职工大学学报》
2003年第3期1-5,共5页
Journal of Anhui Electric Power College for Staff
关键词
电力市场
改进模式法
电压校正控制
综合电压安全裕度
数学模型
voltage corrective control
general extent of voltage security
modified pattern search method
power market
