新能源并网逆变器自同步电压源控制方法  

The Self-synchronizing Voltage Source Control Method of New Energy Source Connected with Inverter

作　　者：王绍帅 江勇 WANG Shao-shuai;JIANG Yong(Liaoning Harbour Controlling Interest(Yingkou)Co.Ltd.,Yingkou 115007,China)

机构地区：[1]辽港控股(营口)有限公司水电分公司,辽宁营口115007

出　　处：《电气开关》2024年第4期95-100,共6页Electric Switchgear

摘　　要：针对并网模式下的主动支撑和电流控制等问题,提出一种新能源并网逆变器的自同步电压源控制方法。首先,基于系统有功和无功功率,采用具有自同步特性的频率和电压主动支撑控制方法。其次,采用基于PIR调节器的平衡电流控制,一方面调节新能源并网逆变器自同步电压源的内电势与电网电压之间的阻抗特性,另一方面提升电网不平衡和扰动条件下的电流控制能力。此外,提出了直流侧电压防崩溃控制策略,能够有效应用于光伏自同步电压源系统中,提高了光伏电池输出电压的稳定性。仿真与实验结果表明,所提方法兼顾了电网自同步特性和电流的控制能力,优化了三相不平衡和扰动下的电流质量,提高了新能源并网逆变器的整体性能。In view of active supporting and current control problems under connected network model,propose self-synchronizing voltage source control method of new energy connected with inverters.First,based on active and reactive powers of the system,adopt frequency with self-synchroniing characteristic and the active supporting control method of volgtage.Second,adopt balanced current control based on PIR regulator.On the one hand regulate the inpedance characteristic between internal potential and electric network voltage of the new energy connected with inverters;on the other hand increase the electric network unbalance and the current control ability under disturbance condition.In addition,propose voltage antibreakdown control strategy on DC side voltage,which can effectively be used in photovoltaic self-synchronizing voltage source system and improve photovoltaic battery output voltage stability.The simulation and experimental results show that the proposed method gives consideration to the electric network self-synchronizing characteristic and the current control ability、optimize three-phase unbalance and current quality under disturbance and inirease the whole performance of the new energy connected with inverters.

关 键 词：新能源发电 并网逆变器 自同步电压源控制 平衡电流控制 防崩溃控制 

分 类 号：TM464[电气工程—电器]