新型同步调相机动态无功特性分析研究

Analysis talk on dynamic reactive power characteristic of new type synchronous condense

随着祁邵特高压直流输电工程的建设,由于祁邵直流送端处于甘肃百万千瓦级新能源发电中心,"强直弱交"及区域电网的就地补偿问题将会越发突出。新型同步调相机暂态、动态特性好、无功增益大、响应速度快,是理想的无功补偿设备。介绍了调相机项目的应用背景,阐述了大型同步调相机励磁控制策略;重点分析了调相机与现有风电场所使用的SVG的无功增益性能比较,并通过仿真试验对同步调相机与SVG无功增益性能进行验证。试验结果表明,在今后的风电场集中上网变电站可以通过加装新型同步调相机来满足电网无功补偿需求。

With the construction of the Qilian-Shaoyang UHVDC power transmission project,the issue of on-site compensation for the"strongstraight and weak-weak"and regional power grids will become more prominent,since the Qilian-Shaoyang UHVDC transmission terminal is located at the Gansu million kilowatt-class new energy power generation center. The new synchronous condense has good transient and dynamic characteristics,high reactive power gain,and fast response speed. It is an ideal reactive power compensation device. The application background of the condense project was introduced,and the excitation control strategy of the large synchronous condense was described. The reactive power gain performance of the SVG used between the condense and existing wind farms was analyzed,and the synchronization condense and SVG were compared through the simulation test. The power gain performance is verified,and the test results show that in the future,the centralized substation on the wind farm can meet the grid reactive power compensation requirements by adding a new synchronous condense.