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DC VOLTAGE DROP CONTROL METHOD WITH DEAD-BAND FOR HVDC GRIDS BASED ON DC VOLTAGE FIDUCIAL NODE
DC VOLTAGE DROP CONTROL METHOD WITH DEAD-BAND FOR HVDC GRIDS BASED ON DC VOLTAGE FIDUCIAL NODE
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机译:基于直流电压节点的直流输电带死区直流电压降控制方法
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摘要
The present invention discloses a fiducial node DC voltage based DC voltage droop control method with dead-band for HVDC grids. Two levels of DC voltage control e.g. primary and secondary DC voltage regulation are introduced to realize load sharing and DC voltage control in HVDC grids. In the process of primary DC voltage regulation, the power flow regulation ability of the entire HVDC grids can be significantly improved, and the DC voltage and stability of the HVDC grids will be quickly controlled and guaranteed for the benefit of droop characteristic. Secondary DC voltage regulation is achieved by by introducing the load-DC voltage controller. In the process of secondary DC voltage regulation, the burden of accommodating power imbalance by the DC voltage fiducial node will be alleviated, thus improving the ability to resist disturbances of the entire HVDC grids.
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