Improvement method and system for adjusting active dynamic voltage regulation capability of generator
A technology of dynamic voltage regulation and generator, applied in the direction of AC network voltage adjustment, single-network parallel feeding arrangement, etc.
Active Publication Date: 2020-11-20
CHINA ELECTRIC POWER RES INST +1
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[0005] The technical solution of the present invention provides a method and system for improving the dynamic voltage regulation ability of adjusting generator active power to solve the problem of how to improve the dynamic voltage regulation ability of generator active power
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[0043] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.
[0044] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...
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The invention discloses an improvement method and system for adjusting an active dynamic voltage regulation capability of a generator. The method comprises the following steps: determining a weak nodeof the dynamic voltage regulation capability; searching a generator effective to a voltage of the weak node, and establishing an effective generator set; calculating track sensitivity of active poweradjustment of each generator to the improvement of the dynamic voltage regulation capability of the weak node, and obtaining the track sensitivity of each generator to a weak node voltage; selectingthe generator with high track sensitivity, and establishing a control generator set; determining an active adjustment measure of the generator according to a control target value of the generator in the control generator set to a predetermined voltage drop area of the weak node; and performing power flow adjustment on the generator of the control generator set, calculating an integral area of theweak node with a voltage lower than a set threshold, and when the integral area is smaller than or equal to a target value, determining that the active adjustment measure is to adjust the active powerof the generator in the control generator set to the minimum active output.
Description
technical field [0001] The present invention relates to the technical field of on-line security and stability calculation and analysis of power systems, and more specifically, to a method and system for improving the dynamic voltage regulation capability of a generator for adjusting active power. Background technique [0002] With the rapid growth of DC transmission scale and the rapid development of new energy sources such as wind power and photovoltaics, my country's power supply and grid pattern continue to undergo major changes, and the safe operation of the grid and the large-scale consumption of renewable energy are facing new challenges. On the one hand, my country is in the period of rapid development of the UHV power grid, and the characteristics of the power grid continue to undergo important changes. At present, the coupling between the AC and DC and the sending and receiving ends of the power grid is becoming increasingly tight, and the impact of faults on the ope...
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IPC IPC(8): H02J3/48H02J3/12
CPCH02J3/48Y02E40/30
Inventor 吕颖魏亚威张璐路侯金秀高强戴红阳贾育培王兵解梅于之虹鲁广明史东宇严剑峰李亚楼田芳安宁
Owner CHINA ELECTRIC POWER RES INST