摘要
为了改善电网稳定性和提高功率因数,提出了一种高压静止无功补偿器(static var compensator,SVC)的整体设计和参数计算。首先介绍了系统的构成和控制,系统由以数字信号处理器(DSP)为核心的位于低电位的下位机监控系统将上位机以以太网的形式发来的触发命令及自身产生的检测命令通过光纤传输给高电位的触发板,去控制晶闸管的触发以及运行状态的检测,触发板并将检测到的状态通过光纤回报给下位机监控系统;随后介绍了能实现功率因数及不平衡度的实时补偿的控制算法以及晶闸管的选型、回路电感和均压电路的设计与参数计算;为了改善无源滤波器的效果还介绍了Logistic映射的混沌特性,并通过混沌优化算法优化了无源滤波器的参数。仿真和实验结果证明该系统补偿效果好,可靠性高,可减少电网畸变率。
In order to improve system stability and to increase the power factor,we put forward a new approach of design for a high-voltage static var compensator and parameter calculation,in which the system adopts a photoelectric trigger,and control commands are produced by upper computer and transferred to monitoring system in a low potential computer by ethernet.After analyzing and processing data,a monitoring system deduces the trigger and testing orders,which are sent to a trigger board in the high-voltage by fiber according to sync signal.To control the thyristor trigger and to detect the fault condition of the thyristor,the fault signals are returned to the monitoring system by fiber,too.The system control algorithm can not only achieve the power factor compensation,but also achieve unbalance compensation.We also present a description of the hardware architecture and the parameter calculation of loop inductance and average voltage circuit.Moreover,in order to optimize the parameters of passive filter,a Logistic mapping and its chaos feature are introduced and adopted to calculate a set of optimized parameters.At last,the simulation and experiment results show that the system has a good compensation effect and high reliability.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第1期104-111,共8页
High Voltage Engineering
基金
国家自然科学基金(60774043)
国家重点基础研究发展计划(973计划)(2009CB219706)~~
