A method for automatic power control in HVDC transmission system
An automatic power control and power transmission system technology, applied in the direction of DC network circuit devices, control/regulation systems, electrical components, etc., can solve the problem of not being able to automatically calculate the timing advance and the rate of change of power, and achieve the effect of eliminating delay factors.
Inactive Publication Date: 2015-09-30
XUJI GRP +1
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Problems solved by technology
[0005] The purpose of the present invention is to provide an automatic power control method in a high-voltage direct current transmission system, to solve the automatic power method advance amount and power change rate value of the time, which must be manually calculated and then set in the automatic power function, and the advance of time cannot be automatically calculated The problem of the rate of change of volume and power
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[0016] The steps of the automatic power control method in the HVDC transmission system are as follows:
[0017] (1) Obtain the power curve of the converter station issued by the dispatching center;
[0018] (2) The operator inputs the time point and the corresponding power value according to the power curve diagram;
[0019] (3) The computer automatically calculates the time and power change rate of the power reference value transmission according to the input time point and power value, and completes the automatic power control.
[0020] Such as figure 1 Shown is the automatic power control curve. figure 1 Among them, A, B, C, D, E... are the power setting points (one point every 15 minutes) in the power curve dispatched to the converter station, and the drawn power curve is shown as the red line. According to the currently designed algorithm, the operator is allowed to set an advance amount Δt, that is, the power is allowed to arrive a short time earlier, and the actual p...
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The invention relates to an automatic power control method in a high-voltage direct current transmission system. The automatic power control method comprises the steps of firstly obtaining a power curve graph sent to a convertor station by a dispatching center; inputting a time point and a power value corresponding to the time point according to the power curve graph by an operator; and automatically calculating power reference value sending time and power change rate according to the input time and the power value by a computer, and accomplishing the automatic control on the power. The automatic power control method provided by the invention can automatically calculate the change rate of the power according to a power curve of the dispatching center so as to enable the actual power to meet the delivering requirement of a power curve. Corresponding values can be input according to the power curve graph by the operator, and the actual power curve is the same as the power curve of the dispatching center. The calculation is not required to be carried out, and the power reference value sending time and the power change rate can be automatically calculated. As the power reference value sending time and the power change rate are automatically calculated by the computer, the manual delay factor is eliminated, and the power reference value sending time and the power change rate are accurate to the second.
Description
technical field [0001] The invention belongs to the technical field of high-voltage direct current transmission, and relates to an automatic power control method in a high-voltage direct current transmission system. Background technique [0002] In the DC transmission system, the transmitted power is controllable. In practical applications, the dispatch center will issue power transmission curves every day according to the power load change law of the power grid on both sides, and the converter station will adjust the transmission according to the power curve of the dispatch center. Power, so that the power reaches the power value specified by the schedule at the corresponding time every day. The power curve of the dispatching center generally has a power interval every 15 minutes, 96 power points per day, and only some of the time the power value will change, such as 10:00 power up to 1000MW, 12:00 power up to 1500MW, 14:00 power Decrease to 1000MW, 22:00 power down to 850...
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IPC IPC(8): H02J1/00G05F1/66
Inventor 黄利军黄浩然饶国辉王春生于存周玉勇张欣申艳红
Owner XUJI GRP