Precise load control system and method based on stability control technology
A load control and load technology, applied in the direction of information technology support system, power network operating system integration, climate sustainability, etc., can solve the power overuse of inter-provincial tie lines, insufficient power grid rotating reserve, and the flow limit of the main channel, etc. problems, achieve the effect of realizing panoramic state perception, improving social and economic benefits, and having little impact on users
Inactive Publication Date: 2018-09-14
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +2
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[0005] Aiming at the deficiencies of the existing technology, the present invention proposes a precise load control system and method based on the stability control technology. Through the "system protection level" precise load shedding control means, it can solve the problem of rapid drop in frequency and main channel flow in the initial stage of power grid failure. To ensure the safe and reliable operation of large power grids
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[0037] In order to clearly illustrate the technical features of the solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted from the present invention to avoid unneces...
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The invention discloses a precise load control system and method based on a stability control technology. The system comprises load shedding control terminals, control substations and a load control main station, wherein the load shedding control terminals acquire sheddable loads in real time, carries out classification according to the importance of the loads and uploads the sheddable loads to the control substations; the control substations classify and summarize the sheddable loads; the shedding priority is set in view of the control terminals respectively, and the total amount of each class of sheddable loads is uploaded to the load control main station; and when the load control main station judges quick drop or interlock of feed-in DC power, the total amount of sheddable loads is calculated, a load shedding command is sent to the control substations, the control substations send load shedding commands to the load shedding control terminals according to the shedding priority, andthe load shedding control terminals carry out load shedding according to the load shedding commands. The problems of quick drop of the frequency at the beginning of power grid failure, limit exceedingof a main channel power flow, overuse of cross-provincial tie line, power grid spinning reserve shortage and the like can be solved, and the large power grid is ensured to operate safely and reliably.
Description
technical field [0001] The invention relates to the technical field of power system control, in particular to a millisecond-level precise load control system and method based on a stable control technology. Background technique [0002] With the profound changes in the pattern and power supply structure of the AC-DC hybrid grid, the system stability problem has evolved from local and isolated to global and interlocking. The traditional on-site security and stability control methods are difficult to meet the needs, and the stable operation of the power grid faces greater risks. In order to deal with the complex system stability problems under the new situation, the precise load shedding control method of "system protection level" can solve the problems of rapid frequency drop in the initial stage of power grid failure, and the power flow of the main channel exceeds the limit, which can ensure the safe and reliable operation of the large power grid. [0003] In the past, the ...
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IPC IPC(8): H02J3/14
CPCH02J3/14Y02B70/3225Y04S20/222
Inventor 王明明邱轩宇张春辉邵淑燕卢福木卢兴勇王国倩蔄晓琨马盈盈王慧轩李凤娇徐文阳高杉曹燕飞
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER
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