New energy centralized frequency correction control system and control method
A frequency correction and control method technology, applied in system integration technology, information technology support system, photovoltaic power generation, etc., can solve the problems of power grid cascading instability, frequency correction control can not take into account the overall information of the power grid, etc., to avoid stability problems and reduce The risk of cascading instability and the effect of increasing grid-connected power
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Embodiment 1
[0057] see figure 1 As shown, a new energy centralized frequency correction control system includes a main station layer, a substation layer, an execution station layer and an execution layer.
[0058] There is only one control central station at the general station layer, which is used to receive information from each control sub-station and issue control measures to the control sub-station.
[0059] The substation layer includes multiple control substations. The control substations are used to receive control measures issued by the control center and issue control measures to the execution station. One new energy station is equipped with one control substation.
[0060] The execution station layer includes multiple execution stations. The execution stations are used to receive control commands from the control substations. One new energy inverter is configured with one execution station.
[0061] The execution layer includes new energy inverters of multiple new energy stati...
Embodiment 2
[0070] see figure 2 As shown, a new energy centralized frequency correction control method includes the following steps:
[0071] Step 1: The main control station obtains the preset fixed value information of the execution station, new energy grid connection information, grid operation information, and actual response control quantity information through the control substation; the new energy grid connection information, grid operation information, and actual response control information Quantity information is regularly sent to the execution station by the new energy inverter, and is generally selected to be sent every 833μs; (ie figure 2 Step 1) in
[0072] The execution station needs to set the fixed value in advance, the fixed value includes the high-frequency fixed value and the low-frequency fixed value, and the fixed values set by all the executed stations are exactly the same. There are two high-frequency fixed values: the first high-frequency fixed value FH1 and...
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