新能源并网电站涉网性能无功优化方法  

Reactive Power Optimization Method for Grid Related Performance of New Energy Grid Connected Power Plants

作　　者：卜晓坤 BU Xiaokun(China Electric Power Planning&Engineering Institute,Beijing 100120,China)

机构地区：[1]电力规划设计总院,北京100120

出　　处：《通信电源技术》2022年第17期12-15,共4页Telecom Power Technology

摘　　要：新能源并网会影响电网运行稳定,降低电能质量。为提高并网电站涉网性能,设计新能源并网电站涉网性能无功优化方法。设计新能源并网电站潮流计算方法,建立等值电路模型,分别获取DC/AC逆变器和同步发电机下的并网无功功率,得到新能源潮流计算的算法流程,使用电压变化量作为判定是否收敛的标准。得到有功功率损耗的最小值和负荷节点电压偏差的最小值的目标函数,获取有功功率、无功功率、节点电压、负荷节点负载电压、负荷节点传输负载的约束条件,建立涉网性能无功优化模型。在2种极端条件下分析电网的工作状态,实验结果显示,该无功优化方法可以将系统节点的电压约束在区间之内,可见该方法能够完成对电网性能的优化。New energy grid connection will affect the stability of power grid operation and reduce power quality.In order to improve the grid related performance of grid connected power plants,a reactive power optimization method for grid related performance of new energy grid connected power plants is designed.Design the power flow calculation method of new energy grid connected power plants,establish an equivalent circuit model,obtain the grid connected reactive power under DC/AC inverter and synchronous generator respectively,obtain the algorithm flow of new energy power flow calculation,and use the voltage change as the criterion to determine whether convergence is achieved.The objective function of the minimum value of active power loss and the minimum value of load node voltage deviation is obtained.The constraints of active power,reactive power,node voltage,load node load voltage,load node transmission load are obtained,and the reactive power optimization model of network related performance is established.The experimental results show that the reactive power optimization method can constrain the voltage of system nodes within the interval,which shows that the method can optimize the power grid performance.

关 键 词：新能源并网 可再生能源 电站涉网性能 无功优化 

分 类 号：TM711[电气工程—电力系统及自动化]