This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System ...This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System are required to comply with the Grid Code. The Grid Code was originally developed with conventional synchronous generators. Since Wind Turbine Generators don’t have the same characteristics as synchronous generators, it was considered appropriate to develop a new set of Grid Code provisions specifically for Wind Farm Power Stations in relation with specific characteristic of Kosovo Power System. With high excepted penetration of wind power, a simultaneous loss of Wind Farms generation will put in the risk the security and reliability of Power System. Therefore, the main requirements for Wind farm power stations concern the fault ride through capability, frequency operation range, and reactive power capability of wind turbines. In the case of grid faults wind turbines have to supply a definite reactive power depending on the instantaneous voltage level of connection point and they must return quickly to normal operation.展开更多
在电力系统分析软件中建立统一潮流控制器(unified power flow controller,UPFC)的相关模型有利于对UPFC控制能力进行分析,从而提高系统运行的稳定性。为此,首先对UPFC的动态数学模型进行分析;其次提出UPFC的解耦控制策略;然后介绍了电...在电力系统分析软件中建立统一潮流控制器(unified power flow controller,UPFC)的相关模型有利于对UPFC控制能力进行分析,从而提高系统运行的稳定性。为此,首先对UPFC的动态数学模型进行分析;其次提出UPFC的解耦控制策略;然后介绍了电力系统仿真软件(power system simulator/engineering,PSS/E)自带的UPFC潮流计算模型;并利用PSS/E提供的用户自定义建模功能,联合调用CONEC子程序和CONET子程序,解决了对相关微分方程和注入电流的计算;最终建立起可用于仿真分析的UPFC动态模型。IEEE标准算例仿真和分析结果证明了所建模型的合理性和可用性。展开更多
柔性直流输电系统(voltage sourced converters high voltage direct current,VSC-HVDC)因其快速灵活的可控性在电力工业中将有越来越广泛的应用,研究其在复杂电力网络中的动态性能具有工程实际意义,应用电力系统仿真软件PSS/E可模拟柔...柔性直流输电系统(voltage sourced converters high voltage direct current,VSC-HVDC)因其快速灵活的可控性在电力工业中将有越来越广泛的应用,研究其在复杂电力网络中的动态性能具有工程实际意义,应用电力系统仿真软件PSS/E可模拟柔性直流输电的准稳态响应。介绍了PSS/E动态仿真的基本原理;分析了柔性直流输电模型VSCDCT的有效性和适用性,并基于实际系统对准稳态直流动态模型VSCDCT进行了仿真研究,仿真结果表明PSS/E直流模型能够满足大规模交/直流系统仿真的要求。展开更多
文摘This paper presents aspects of study and simulation approach for planned wind power projects in Kosovo Power System in relation with Grid Code requirements. All generators, connected to the Kosovo Transmission System are required to comply with the Grid Code. The Grid Code was originally developed with conventional synchronous generators. Since Wind Turbine Generators don’t have the same characteristics as synchronous generators, it was considered appropriate to develop a new set of Grid Code provisions specifically for Wind Farm Power Stations in relation with specific characteristic of Kosovo Power System. With high excepted penetration of wind power, a simultaneous loss of Wind Farms generation will put in the risk the security and reliability of Power System. Therefore, the main requirements for Wind farm power stations concern the fault ride through capability, frequency operation range, and reactive power capability of wind turbines. In the case of grid faults wind turbines have to supply a definite reactive power depending on the instantaneous voltage level of connection point and they must return quickly to normal operation.
文摘在电力系统分析软件中建立统一潮流控制器(unified power flow controller,UPFC)的相关模型有利于对UPFC控制能力进行分析,从而提高系统运行的稳定性。为此,首先对UPFC的动态数学模型进行分析;其次提出UPFC的解耦控制策略;然后介绍了电力系统仿真软件(power system simulator/engineering,PSS/E)自带的UPFC潮流计算模型;并利用PSS/E提供的用户自定义建模功能,联合调用CONEC子程序和CONET子程序,解决了对相关微分方程和注入电流的计算;最终建立起可用于仿真分析的UPFC动态模型。IEEE标准算例仿真和分析结果证明了所建模型的合理性和可用性。
文摘柔性直流输电系统(voltage sourced converters high voltage direct current,VSC-HVDC)因其快速灵活的可控性在电力工业中将有越来越广泛的应用,研究其在复杂电力网络中的动态性能具有工程实际意义,应用电力系统仿真软件PSS/E可模拟柔性直流输电的准稳态响应。介绍了PSS/E动态仿真的基本原理;分析了柔性直流输电模型VSCDCT的有效性和适用性,并基于实际系统对准稳态直流动态模型VSCDCT进行了仿真研究,仿真结果表明PSS/E直流模型能够满足大规模交/直流系统仿真的要求。
