Power grid grouping method and system based on reactive/active voltage sensitivity decoupling

A technology of active voltage and sensitivity, applied in the field of power grid grouping method and system, to solve the problem of overvoltage and control complexity, control speed superiority, control speed has the best effect

Pending Publication Date: 2021-07-27
STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention proposes a grid grouping method and system based on reactive / active voltage sensitivity decoupling to solve the problem of how to realize the grouping of power distribution and control the grouping voltage

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  • Power grid grouping method and system based on reactive/active voltage sensitivity decoupling
  • Power grid grouping method and system based on reactive/active voltage sensitivity decoupling
  • Power grid grouping method and system based on reactive/active voltage sensitivity decoupling

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Embodiment Construction

[0085] 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 provided with the same reference numerals.

[0086] 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...

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Abstract

The invention discloses a power grid clustering method and system based on reactive/active voltage sensitivity decoupling, and the method comprises the steps: carrying out the active and reactive decoupling clustering of a power distribution network containing high-proportion distributed photovoltaic at the same time through employing an improved modularity function based on an active/reactive voltage sensitivity matrix; and on the basis of the existing grouping, according to the principle of 'preferentially utilizing the reactive power regulation capability of the photovoltaic inverter to the greatest extent and then carrying out photovoltaic active power shearing to the greatest extent', formulating a voltage control strategy in the active and reactive power grouping, so that high-proportion distributed photovoltaic cluster control is realized. The problems of overvoltage and control complexity caused by high-proportion distributed photovoltaic access in the future are solved, and the method has superiority in speed control.

Description

technical field [0001] The present invention relates to the technical field of distribution network control, and more specifically, to a grid grouping method and system based on reactive power / active voltage sensitivity decoupling. Background technique [0002] On the large power grid side, when grouping the large power grid according to the voltage sensitivity matrix, the network impedance characteristics of the large power grid (resistance is much smaller than the reactance) are considered, and the influence of active power changes on the grid voltage is often ignored, and only the reactive power grouping and grouping of the large power grid are performed. Reactive voltage control. But on the side of the distribution network, because the impedance ratio of the distribution network is large, and the voltage control strategy involves the active power control of photovoltaic inverters, the impact of active power changes on the grid grouping cannot be ignored. [0003] Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/48H02J3/50
CPCH02J3/381H02J3/48H02J3/50H02J2203/20H02J2300/24Y02E10/56
Inventor 苏二号吕志鹏宋振浩韩筛根周珊刘文龙杨晓霞刘峰薛琳杜许峰王岗刘梦
Owner STATE GRID SHANGHAI ENERGY INTERCONNECTION RES INST CO LTD
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