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A method, device and storage medium for analyzing primary frequency modulation in multiple regions
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An analysis method and multi-regional technology, applied in the field of multi-regional primary frequency modulation analysis method, device and storage medium
Active Publication Date: 2021-05-14
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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[0005] The embodiment of the present invention provides an analysis method, device, and storage medium for multi-regional primary frequency regulation, which can effectively solve the problem in the prior art that only conducts primary frequency regulation analysis for the frequency response of the entire power system, and can realize regional primary frequency regulation capabilities accurate analysis of
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Embodiment 1
[0044]Seefigure 1 It is a flowchart of a multi-zone one-time frequency modulation case provided in the embodiment of the present invention, the method comprising steps S101 to S104.
[0045]S101, acquire PMU data of each region main station in the operating time period power system; wherein the PMU data comprises frequency variation data, power change data, line data, and event action data of each primary station.
[0046]In this embodiment, the PMU data of each region main station should be collected in order to achieve an analysis of one frequency modulation in each region. Preferably, the PMU data further includes active data, reactive data, voltage data, current data, phase angle data, but is not limited thereto. Therefore, the critical frequency change data, power change data, line data, and event action data are extracted from the PMU data. In addition, the line data contains AC network data and DC data.
[0047]S102, based on the frequency change data, the critical time node of the ac...
Embodiment 2
[0080]Seefigure 2 , Is a schematic structural diagram of an analyzer of a multi-zone one-time frequency modulation provided in the second embodiment of the present invention, including:
[0081]PMU data acquisition module 201 for obtaining PMU data of each region main station in the operating time period power system; wherein the PMU data comprises frequency variation data, power change data, line data, and event action data of each primary station;
[0082]The critical time node division module 202 is used to determine the critical time node of the accident period according to the frequency of the accident period;
[0083]The β index calculation module 203 is configured to calculate the β index of each region according to the power change data corresponding to each of the accident critical time nodes, and calculate the β index of each region; wherein the beta indicator is The power system and one frequency frequency index of each region;
[0084]The evaluation module 204 is configured to calcu...
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Abstract
The present invention discloses an analysis method, device and storage medium for multi-area primary frequency regulation. The method includes: acquiring PMU data of master stations in each region in the power system during the accident time period; the PMU data includes frequency change data of each master station , power change data, line data and event action data; calculate the β index of each area according to the power change data, line data, and event action data corresponding to each critical time node of the accident; the β index is the primary frequency regulation of the power system and each area capacity index; according to the β index, calculate the responsibility ratio of each region in the accident time period, and make a longitudinal comparison based on the pre-acquired responsibility ratio of each region in the preset time period, so as to evaluate the situation of the first-time frequency regulation operation in each region, which can effectively solve the current situation. Existing technology only conducts a frequency modulation analysis on the frequency response of the entire power system, and can accurately analyze the primary frequency modulation capabilities of sub-regions.
Description
Technical field[0001]The present invention relates to the field of primary frequency modulation techniques in power systems, and more particularly to analytical methods, apparatus, and storage medium of multi-zone primary frequency modulation.Background technique[0002]The fundamental purpose of the power system operation is to supply electrical energy to the user under the premise of power quality. Frequency is an important standard for measuring energy quality. Due to the grid is a huge inertial system, when the power grid has the lack of power, the generator rotor accelerates, and the grid frequency is increased, and the grid frequency is lowered. Therefore, it is difficult to ensure that the grid frequency is always constant, but it is necessary to control the grid frequency within a certain range.[0003]One frequency modulation means that once the frequency of the grid is deviated from the rated value, the control system of the unit in the grid automatically controls the increase...
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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24
CPCH02J3/24Y02E60/00
Inventor 谢宇翔付超涂亮李诗炀赵睿吴为徐敏吴小珊
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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