一种基于VSG的风电并网半实物仿真系统

• Format: Patent
• Language: Chinese
• Published: 28.04.2020
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

一种基于VSG的风电并网半实物仿真系统，包括由原动机、PMSG、机侧变流器、网侧变流器、变流器控制系统、风机主控系统、变压器、负载、并网点模拟器连接构成实际风电并网系统以及由受控源、线路阻抗、电压电流信号采集单元、LCL滤波器、控制器、逆变器、直流电源连接构成基于VSG的电网仿真系统，实现了实际风电系统嵌入到基于VSG的电力仿真系统中，不仅能实现对系统惯性特性、频率响应特性及调压特性的有效模拟，而且可以灵活调整风电并网实验系统中风电并网功率的比例，从而为研究不同风电渗透率下风电机组的频率响应特性提供便利，有效的简化了风电并网实验，具有较强的灵活性和可行性。 The invention provides a VSG-based wind power grid-connected semi-physical simulation system comprising an actual wind power grid-connected system which is composed of a prime motor, a PMSG, a machineside current converter, a network side current converter, a current converter control system, a blower master control system, a transformer, a load and a grid-connected point simulator through connection and a VSG-based power grid simulation system which is composed of a controlled source, line impedance, a voltage and current signal acquisition unit, an LCL filter, a controller, an inverter anda DC power supply through connection so that the actual wind power system can be embedded in the VSG-based power simulation system, effective si