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Active adjustment method for realizing low-frequency load shedding capacity based on power grid topology

A low-frequency load shedding and power grid topology technology, which is applied in AC network voltage adjustment, load forecasting in the AC network, electrical components, etc., can solve the problems of inability to automatically generate low-frequency load shedding device switching strategies and execution, lag, etc.

Pending Publication Date: 2022-05-13
QUANZHOU POWER SUPPLY COMPANY OF STATE GRID FUJIAN ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the internal operation mode of the local power grid changes, only professionals can re-arrange the load-shedding line, and then communicate it to the dispatcher to order the operation. It is impossible to automatically generate and execute the operation and withdrawal strategy of the low-frequency load shedding device, so there is an obvious lag

Method used

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  • Active adjustment method for realizing low-frequency load shedding capacity based on power grid topology
  • Active adjustment method for realizing low-frequency load shedding capacity based on power grid topology
  • Active adjustment method for realizing low-frequency load shedding capacity based on power grid topology

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Embodiment 1

[0055] see figure 1 , an active adjustment method for realizing low-frequency load shedding capacity based on grid topology, including the following steps:

[0056] Select a section, according to the section, initialize the adjacency matrix A, update the adjacency matrix A in real time, judge whether the operation mode has changed, if it changes, return to update the adjacency matrix A, if not, set the node j where the section is located as the initial node of the local power grid ;

[0057] The method realizes the real-time collection, processing and monitoring of power grid data based on the SCADA data collection and monitoring control system;

[0058] Read the real-time power flow value of the section and the low-frequency load shedding capacity of the local power grid through the SCADA data acquisition and monitoring control system, and calculate the deviation rate of the low-frequency load shedding capacity according to the real-time power flow value and the low-frequenc...

Embodiment 2

[0090] The present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and operable on the processor. Active regulation method for realizing low-frequency load shedding capacity in grid topology.

Embodiment 3

[0092] The present invention provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the active adjustment method for implementing low-frequency load shedding capacity based on grid topology as described in any embodiment of the present invention is implemented.

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Abstract

The invention relates to an active adjustment method for realizing low-frequency load shedding capacity based on power grid topology, which comprises the following steps of: selecting a section, and determining an initial node of a local power grid based on the section; reading the real-time power flow value of the section and the low-frequency load shedding capacity of the local power grid, and calculating the low-frequency load shedding capacity deviation ratio according to the real-time power flow value and the low-frequency load shedding capacity of the local power grid; performing power grid topology analysis based on the initial node, searching all nodes communicated with the initial node to obtain a power grid topology structure of the local power grid, and screening out a tail end switch; establishing a power grid low-frequency load shedding information table, adding low-frequency load shedding rounds, and adding an operation item for each low-frequency load shedding round; according to the sequence in the power grid low-frequency load shedding information table and the low-frequency load shedding capacity deviation ratio, the screened tail end switches are selected, and a low-frequency load shedding sequence table is generated; and according to the low-frequency load shedding sequence table, the low-frequency load shedding device in the tail-end switch interval is remotely controlled to be switched on and switched off, and active adjustment is completed.

Description

technical field [0001] The invention relates to an active adjustment method for realizing low-frequency load shedding capacity based on power grid topology, and belongs to the technical field of dynamic adjustment of power grid low-frequency load shedding capacity. Background technique [0002] The isolated grid refers to the state where the local grid loses contact with the main grid after a grid failure, and the power supply in the local grid drives the load operation without electrical communication with other power systems. When an isolated network occurs, it is often accompanied by violent fluctuations in frequency. Therefore, in order to make the isolated grid run stably, the focus is on how to maintain the balance between power output and load in the local grid, and ensure that the frequency is in the range of 50±0.5HZ. The low-frequency load shedding device is just to prevent the frequency from falling due to accidents. By detecting that the frequency drops to a cer...

Claims

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Application Information

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IPC IPC(8): H02J3/14H02J3/24H02J3/00
CPCH02J3/14H02J3/241H02J3/003
Inventor 陈厚荣苏捷李阳阳林温南施蔚锦车紫莹陈晓榕谢季平林植成
Owner QUANZHOU POWER SUPPLY COMPANY OF STATE GRID FUJIAN ELECTRIC POWER