Power distribution network fault handling method based on self-recovering control

A technology for fault and self-healing control of distribution network, applied in the direction of electrical components, circuit devices, etc., can solve the problem that the optimization effect cannot be obtained, the load is not considered, the change trend of distributed power output, and the distributed power/microgrid is not used. / The role of energy storage devices, etc., to achieve the effect of strong adaptability and improved economy

Inactive Publication Date: 2013-06-05
新疆电力公司电力科学研究院 +2
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Problems solved by technology

[0004] Under normal circumstances, the operating state of the distribution network is optimized, but due to the static network reconstruction based on the data of a time section, the change trend of the load and distributed power output is not considered, the optimization effect cannot be obtained, and the distribution network has not been fully utilized. The role of power supply / microgrid / energy storage device
In the current distribution network control, there is a lack of early warning monitoring, analysis and control of the process from insulation defects to single-phase ground faults and the development of phase-to-phase short circuits.

Method used

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  • Power distribution network fault handling method based on self-recovering control
  • Power distribution network fault handling method based on self-recovering control

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Embodiment Construction

[0040] The self-healing control scheme of the distribution network is controlled according to the current operating state of the distribution network to achieve a healthier operating state, thereby ensuring the safe, reliable, high-quality, and economic operation of the distribution network.

[0041] The specific control process is as follows:

[0042] 1) The implementation process of distributed self-healing control: voltage and current transformers respectively transform the voltage and current of the distribution network into weak current or light signals, and the protection control device and the relay protection device receive the converted voltage and current signals and protect The setting value is compared, and the action start value is exceeded. For example, the set value of the rich line current is 3A, and the collected current at the K103 switch is 5.7A. When the current at the K103 switch is 5.7A, the relay will be triggered to open the K103 to remove the fault; At this...

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Abstract

Disclosed is a power distribution network fault handling method based on self-recovering control. By a centralized and distributed coordination power distribution network fault self-recovering control method, signal processing and control strategy generation are adaptive, the control process is automatically completed without manual intervention, and behaviors of a relay protection device and a protection control device, a switch and an intelligent switch, and an automatic safety device are coordinated. The power distribution network fault handling method includes the steps of automatic detection of power distribution network faults, distributed self-recovering control and centralized self-recovering control.

Description

Technical field [0001] The invention relates to a method for processing faults in a distribution network, in particular to a method for processing faults in a distribution network based on self-healing control, and belongs to the technical application field of power control and artificial intelligence. Background technique [0002] The distribution network is the intermediate link between the electric load and the large power grid. The typical voltage level in my country is 10 / 6 / 20kV. The improvement of social production and living standards requires the distribution network to have higher power supply safety and reliability. In the distribution network, there are many branch and cascade switches, flexible operation modes, neutral points are not directly grounded, and multi-point access to distributed small-capacity power sources in various energy forms, loads and distributed power sources have strong uncertainties, Typical characteristics such as unbalanced three-phase, high fai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00
Inventor 马瑞龙
Owner 新疆电力公司电力科学研究院
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