Power grid control method and power grid control system

Abstract

The embodiment of the invention provides a power grid control method and a power grid control system, and relates to the technical field of power grid control. The power grid control method comprisesthe steps that when a load needs to be provided for a power grid, electronic equipment generates a load instruction, and sends the load instruction to a battery and a steam extraction control valve; the battery supplies all loads required by the power grid to the power grid according to the load instruction; the steam extraction control valve controls a unit connected with the steam extraction control valve to provide loads for the power grid according to the load instruction, wherein the loads provided by the unit are sequentially increased; and the electronic equipment controls the battery to reduce the load that are provided currently when the unit starts to provide the loads, so that the battery stops providing the load to the power grid when the unit provides all the loads required bythe power grid to the power grid. Through the method, the power grid control efficiency can be improved.

Description

technical field [0001] The present invention relates to the technical field of power grid control, in particular to a power grid control method and a power grid control system. Background technique [0002] With the increasing proportion of wind power, photovoltaic, and hydropower in the power grid, the increasing number of large DC boilers, and the low average load rate of the units, the frequency of one-time frequency regulation of the units is increasing, and the number of actions per day can be as high as hundreds. Second-rate. In order to maintain the primary frequency regulation performance of the unit, the sliding pressure operating parameters of the unit are usually relatively high, and the high-speed door of the turbine is kept at a relatively low opening. However, the inventors found that in the prior art, if only the unit participates in one frequency regulation, the high-adjustment door of the steam turbine of the unit is kept at a relatively low opening, which ...

AI Technical Summary

Problems solved by technology

However, the inventors found that in the prior art, if only the unit participates in one frequency regulation, the high-adjustment door of the steam turbine of the unit is kept at a relatively low opening, which will cause a large throttling loss of the turbine control door and weak economic performance; Only the battery participates in frequency regulation once, which will cause waste of resources and affect battery life, so there is a problem of low efficiency of grid control

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