Method, device and storage medium for power coordinated control of direct current transmission system
A DC transmission system and coordinated control technology, applied in the direction of power transmission AC network, etc., can solve problems such as abnormal current rise and fall process of three stations, and achieve the effect of safe operation
Active Publication Date: 2021-12-14
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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Problems solved by technology
In the prior art, when setting the current rate reference value of the first inverter station in the three-terminal direct current transmission system, its parameters will directly become the set value. The problem with this setting method is: if the set value is unreasonable, it may It will cause abnormalities in the rise and fall process of the three-station current
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[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] see figure 1 , is a schematic flowchart of a method for coordinated power control of a direct current transmission system provided by this embodiment of the present invention, the method includes steps S1 to S4:
[0030] S1. When the three-terminal direct current transmission system is in the one-to-two mode, obtain the current reference value and the current rise and fall rate of the rectifier station, and obtain the current reference value and the current ...
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The invention discloses a method, device and storage medium for power coordination control of a direct current transmission system. The method includes the steps of: when the three-terminal direct current transmission system is in the one-to-two mode, obtaining a current reference value and a current rise and fall rate of a rectifier station, and Obtain the current reference value and current rise and fall rate of the first inverter station; if the current reference value of the rectification station and the current reference value of the first inverter station change at the same time, obtain the current current value of the rectification station and the current value of the first inverter station Current current value; determine the current current of the first inverter station according to the current rise and fall rate of the rectifier station, the current current value and the changed current reference value, and the current current value and the changed current reference value of the first inverter station Rise and fall rate; if only the current rise and fall rate of the first inverter station changes, adjust to the changed current rise and fall rate. The invention can automatically refresh and determine the current rising and falling rate of the first inverter station, so that the three inverter stations can reach the set reference value at the same time.
Description
technical field [0001] The invention relates to the technical field of DC fault control, in particular to a method, device and storage medium for power coordination control of a DC transmission system. Background technique [0002] When the three-terminal DC power transmission system consists of one rectifier station and two inverter stations, generally, the rectifier station and the first inverter station control the DC current, and the second inverter station controls the DC voltage. In the prior art, when setting the current rate reference value of the first inverter station in the three-terminal direct current transmission system, its parameters will directly become the set value. The problem with this setting method is: if the set value is unreasonable, it may It will cause abnormalities in the rise and fall process of the three-station current. Contents of the invention [0003] In view of the above problems, the purpose of the embodiments of the present invention i...
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IPC IPC(8): H02J3/36
CPCH02J3/36Y02E60/60
Inventor 李成翔郭琦廖梦君邓丽君黄立滨苏明章
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD