统一潮流控制器在苏南500 kV电网中的应用
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国家电网公司科技项目500 kV统一潮流控制器协调控制和保护配合技术研究


Application of UPFC in the 500 kV Southern Power Grid of Suzhou
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    摘要:

    针对苏州南部500 kV电网供电能力提升、特高压直流功率消纳等问题,开展了统一潮流控制器(UPFC)在苏南500 kV电网应用的可行性研究,并给出了UPFC接入系统方案及拓扑结构,通过系统计算确定UPFC变压器及换流器容量。仿真计算验证了其对苏州南部500 kV电网潮流及电压调节作用,结果表明:苏南电网冬季大负荷及锦苏特高压直流小方式下,能消除梅里木渎断面N-1过载的问题;夏季锦苏直流大方式下发生双极闭锁时,通过提升地区电网供电能力,减小苏南地区切负荷量;通过UPFC无功电压控制,提供苏南地区电网电压恢复水平,一定程度上减少了锦苏直流发生换相失败。并给出了UPFC主设备关键参数的选择依据。

    Abstract:

    To enhance the power supply capacity and solve the problem for UHVDC power assumption of 500 kV power network in Suzhou,the feasibility research on the application of UPFC in 500 kV Southern Power Grid of Suzhou is carried out.Combined with the scheme of UPFC integrated and its topology structure,the capacity of UPFC is determined by system calculation and the principle for the key parameters selection of UPFC main equipment are supplied.The effect of UPFC on the power flow and voltage regulation of 500 kV power grid in southern Suzhou is verified by simulation,which indicate that under the heavy load condition of Suzhou power network in winter,the regulation of UPFC can eliminate the key section overload problem as N-1,while under the heavy load condition in summer,it can decrease the capacity of load shedding as the UHVDC bipolar blocked.The reactive power control of UPFC can provide the dynamic voltage support for power grid,which is benefit to decrease the probability and duration time of commutation failure of UHVDC.

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李鹏,林金娇,孔祥平.统一潮流控制器在苏南500 kV电网中的应用[J].电力工程技术,2017,36(1):20-24

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  • 收稿日期:2016-10-31
  • 最后修改日期:2016-11-28
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  • 在线发布日期: 2017-01-05
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