Abstract
In the scenario of centralized access of concentrating solar power, wind power and photovoltaic power to the power grid, if the concentrating solar power units produce large active power, it is conducive to the consumption of clean energy, but not conducive to the voltage stability of the power grid in this region; If the concentrating solar power unit emits less active power, it can improve the voltage stability of the local power grid by emitting more reactive power, but reduce the consumption of clean energy. In view of this contradiction, the key factors affecting power grid voltage stability and new energy consumption capacity of power transmission system containing concentrating solar power and conventional new energy are analyzed, and a multi-objective concentrating solar power unit operation optimization model considering power grid stability and total clean energy consumption is proposed. The objective function with the maximum voltage stability margin and clean energy consumption is described in detail. The optimization constraints include equality constraints, inequality constraints and operation constraints of energy storage subsystem. The simulation example based on the actual power grid shows that the proposed optimization model can find the operation strategy of concentrating solar power units considering power grid voltage stability and new energy consumption.
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