摘要
电力系统的过载保护控制是一个多元耦合的非线性分散控制模型,对电力系统分散控制可以提高系统的稳定性和可靠性。传统的控制方法采用比例谐振PID神经网络控制方法实现对电力系统的过载保护,当电力系统的变电和配点输出具有逆变整流振荡时,对电力系统分散控制性能不好。提出一种基于逆变过载保护的电力系统分散控制方法并通过Matlab进行仿真实现。首先对电力系统的逆变过载保护系统进行极性扰动死区分析,基于矢量扰动补偿对数幅频分析进行逆变过载保护抑制,采用功率基阵激励放大算法实现对电力系统的分散控制,最后基于Matlab 7.1仿真软件进行仿真实验,仿真研究结果表明,采用该方法进行电力系统的分散控制,精度较高,过载保护性能较好,控制误差减少,展示该控制方法的优越性能和较高的应用价值。
The overload protection control of power system is a nonlinear decentralized control model with multiple coupling, and the stability and reliability of it can be improved by decentralized control of power system. The traditional control method uses proportional resonant PID neural network control method to realize the overload protection of power system, when the power system substation and collocation point output have inverter commutation oscillation, the power system dispersion control performance is not good. A power system decentralized control method based on inverse overload protection is proposed and realized by Matlab. Firstly, the dead polar perturbations of the power system of the inverter overload protection system are analyzed. Based on the analysis of the vector perturbation compensation logarithmic amplitude frequency, the inverter overload protection is restrained, the power matrix array excitation amplification algorithm is adopted to achieve the decentralized control of power system, and finally simulation experiment is made based on MATLAB 7.1, simulation results show that the decentralized control method has high accuracy, better overload protection performance, and less control error, which demonstrates the control method has superior performance and higher application value.
出处
《控制工程》
CSCD
北大核心
2015年第6期1103-1107,共5页
Control Engineering of China
基金
国家自然科学基金(64582589)
