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Primary frequency modulation partition cooperative control method and system for DC landing point near-region power grid

A technology of collaborative control and DC drop point, applied in AC network circuits, power transmission AC networks, electrical components, etc., can solve the problems of long recovery time and large frequency fluctuations of the power grid, to ensure safe and stable operation, and improve primary frequency regulation capabilities. , the effect of shortening the frequency recovery time

Active Publication Date: 2020-06-12
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in view of the large frequency fluctuation and long recovery time caused by the load reduction of the receiving end grid when the UHV DC line is blocked, it is necessary to propose a coordinated control measure for the primary frequency modulation of the grid.

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  • Primary frequency modulation partition cooperative control method and system for DC landing point near-region power grid
  • Primary frequency modulation partition cooperative control method and system for DC landing point near-region power grid
  • Primary frequency modulation partition cooperative control method and system for DC landing point near-region power grid

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Embodiment Construction

[0038] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0039] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, 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 components illustrated in the figures are not necessarily drawn to scale. Description...

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Abstract

The invention discloses a primary frequency modulation partition cooperative control method and system for a DC landing point near-region power grid, and the method comprises the following steps: monitoring an operation state signal of an extra-high-voltage DC line in real time, transmitting the operation state signal to a unit, and participating in the primary frequency modulation cooperative control, of a DC landing point near-region; carrying out primary frequency modulation compensation region division on the direct current landing point near region; generating a primary frequency modulation control instruction of the DC drop point near-zone unit set, and carrying out zone control. The method effectively improves the primary frequency modulation capability of the power grid, shortens the frequency recovery time of the power grid, and guarantees the safe and stable operation of the power grid.

Description

technical field [0001] The invention relates to a method for coordinated control of primary frequency modulation and partition of a power grid near a direct current landing point, and belongs to the technical field of power grid control. Background technique [0002] With the maturity of DC UHV transmission equipment technology, high-voltage, high-power DC transmission has developed rapidly. At present, more than 10 UHV DC transmission lines have been put into operation in my country, with a maximum DC rated voltage of ±1100 kV, a transmission distance of 3293 kilometers, and a transmission capacity of 12 million kilowatts. Adjustment and other aspects have played an important supporting role. [0003] Due to the technical characteristics of UHV DC transmission, such as large transmission capacity and lack of reactive power support, it has a great impact on the stability of the receiving-end power grid system near the DC landing point. Larger fluctuations are not conducive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/24H02J3/36
CPCH02J3/24H02J3/36H02J2003/365Y02E60/60
Inventor 韩英昆石岩王勇孟瑜李磊高嵩袁森王昕苗伟威王蒙庞向坤孟祥荣辛刚于庆彬颜庆李元元刘恩仁孙萌萌
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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