Network province coordination new energy station dynamic reactive power reserve target allocation method

Abstract

The invention discloses a method for allocating dynamic reactive power reserve targets of grid-provincial coordination new energy stations, including provincial survey and statistics of the dynamic reactive power reserve of each grid-provincial coordination gateway main transformer; The dynamic reactive power reserve target limit of the gateway main transformer is issued to the provincial dispatcher; the dynamic reactive reserve target limit of each network provincial coordination gateway main transformer issued by the provincial dispatcher is received and network dispatched, and is calculated according to the set distribution principle The upper and lower limits of the dynamic reactive power reserve target assigned to the new energy station; the AVC main station of the provincial adjustment will send the calculated target value of the bus voltage on the high voltage side of the new energy station and the upper and lower limit of the dynamic reactive power reserve target to the new energy field The AVC sub-station of the station; the AVC sub-station of the new energy station performs reactive power adjustment according to the target value of the bus voltage and the upper and lower limits of the dynamic reactive power reserve target. The method of the invention retains a reasonable dynamic reactive power reserve, improves the ability of each new energy collection area to cope with abnormal disturbances such as faults, and realizes stable grid-connected power generation of new energy.

Description

technical field [0001] The invention relates to reactive power reserve coordinated control between network dispatching and provincial dispatching, in particular to a dynamic reactive power reserve target allocation method for network-province coordinated new energy stations, which belongs to the technical field of automatic voltage control of electric power systems. Background technique [0002] In recent years, the installed capacity of new energy has continued to increase, and the proportion of new energy output to the entire network load has increased year by year. The high proportion of new energy has affected the voltage support capacity of the power grid. The large fluctuations in output have made it difficult to adjust the voltage of the power grid, and voltage problems in some areas have become prominent . The amount of reactive power reserve is strongly related to the safety and stability of the system, and its optimization is an important means to ensure the safety...

AI Technical Summary

Problems solved by technology

If the dynamic reactive power reserve target value distribution of the new energy station is unreasonable, it is likely to reduce the safe and stable operation of the new energy station.

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