Grid voltage control method, device, computer equipment and storage medium
A technology of grid voltage and control method, applied in circuit devices, electrical components, photovoltaic power generation, etc., can solve the problems of increasing grid voltage fluctuation range, difficulty in grid voltage control, distributed power output highly dependent on environmental changes, etc. random effect
Active Publication Date: 2020-12-22
STATE GRID SHAANXI ELECTRIC POWER +2
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[0003] However, since the output of distributed power sources is highly dependent on environmental changes and has great randomness, volatility and uncertainty, when a large number of distributed power sources such as photovoltaics and wind power are connected to the grid, the fluctuation range of the grid voltage will increase. The variance of voltage distribution increases, which brings great difficulties to the grid voltage control
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[0055] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0056]It can be understood that the terms "first", "second" and the like used in this application can be used to describe various corresponding relationships and time relationships herein, but these corresponding relationships and time relationships are not limited by these terms. These terms are only used to distinguish a first correspondence and temporal relationship from another correspondence and temporal relationship.
[0057] The grid voltage control method provided by this application can be applied to such as figure 1 In the grid system shown, figure 1 It is a sc...
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The invention relates to a power grid voltage control method, a power grid voltage control device, computer equipment and a storage medium. The method comprises the following steps of constructing anoptimization objective function according to the voltage, injection power and communication constraint conditions of a distributed power grid-connected point. Training an initial convolutional neuralnetwork according to the voltage actual measurement value and the injection power actual measurement value of the distributed power grid-connected point in a first preset period to obtain a first corresponding relation between the voltage and the injection power of the distributed power grid-connected point; obtaining a second corresponding relation between the injection power of a distributed power supply grid-connected point at a first moment and the injection power of the distributed power supply grid-connected point at a second moment according to the optimization objective function, the first corresponding relation and the injection power actual measurement value of the distributed power supply grid-connected point in a second preset period; and controlling the voltage of the power grid according to the adjusted injection power at the first moment, the second corresponding relation and the first corresponding relation. According to the invention, the voltage of the distributed power grid is controlled by controlling the output of the injection power.
Description
technical field [0001] The present application relates to the technical field of grid voltage control, and in particular to a grid voltage control method, device, computer equipment and storage medium. Background technique [0002] With the rapid consumption of traditional fossil energy and the increasingly prominent environmental problems, renewable energy has developed rapidly. Among them, power sources such as photovoltaics and wind power have broad application prospects due to their wide distribution, renewable, and non-polluting advantages. For example, connecting a large number of distributed generation (DG) such as photovoltaics and wind power to the grid. [0003] However, since the output of distributed power sources is highly dependent on environmental changes and has great randomness, volatility and uncertainty, when a large number of distributed power sources such as photovoltaics and wind power are connected to the grid, the fluctuation range of the grid voltage...
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IPC IPC(8): H02J3/38
CPCH02J3/383H02J3/381H02J2203/20Y02E10/56
Inventor 迟方德李立乔颖鲁宗相张宇精王康王俊凯李鹏
Owner STATE GRID SHAANXI ELECTRIC POWER