A smart grid self-healing method and device

A technology of smart grid and power supply, applied in the field of power grid system, can solve the problem of long time-consuming restoration of power supply at non-fault points, and achieve the effect of shortening the recovery time of faults

Active Publication Date: 2017-09-22
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention provides a smart grid self-healing method to solve the power supply mode in the prior art. When there are multiple faults in the grid, it takes a long time to restore the power supply at non-fault points. The scheme is as follows:

Method used

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  • A smart grid self-healing method and device
  • A smart grid self-healing method and device
  • A smart grid self-healing method and device

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Embodiment 1

[0046] Distributed power generation is a power source that uses renewable energy-based energy scattered in the power grid to generate power, such as wind energy, solar energy, water energy, natural gas, and biomass power generation. Distributed power supply has the advantages of cleanliness and renewability. The application of distributed power supply plays a vital role in energy saving and emission reduction in power production, and can ensure the power supply and power regulation of important users when the power system itself is in trouble. . At the same time, distributed power supply allows ordinary power users to transmit clean power to the system to reduce power consumption costs, and users have great enthusiasm for participation.

[0047] However, renewable energy itself has shortcomings such as intermittent and random power generation, which will cause fluctuations in the power system and disrupt power quality, which restricts the promotion and application of distribut...

Embodiment 2

[0055] see image 3 , is a smart grid self-healing method provided in Embodiment 2 of the present invention. The power supply of the smart grid is a distributed power supply. The method is applied to the first metering device, and the method may include:

[0056] Step S201: Obtain in real time the power supply information data table of each metering device around.

[0057] Among them, the information in the power supply information data table may include: the power supply capacity of the metering equipment corresponding to the power supply data table, the current, voltage, active power and reactive power collected in real time, and the information based on the power supply capacity, current, voltage, active power and Weight obtained from reactive power calculation. In this embodiment, the load rate and the power coefficient may be used as weights.

[0058] Step S202: Detect whether fault indication information is received, and obtain a first detection result, wherein the fau...

Embodiment 3

[0070] see Figure 4 , is a schematic structural diagram of a smart grid self-healing device provided in Embodiment 3 of the present invention, the device is applied to the first metering device, and the device includes: an acquisition unit 101 , a first detection unit 102 and a determination unit 103 . in:

[0071] The obtaining unit 101 is configured to obtain the power supply information data table of each metering device around in real time.

[0072] Wherein, the information in the power supply information data table may include: the power supply capacity of the metering device corresponding to the power supply data table, current, voltage, active power and reactive power collected in real time.

[0073] The first detection unit 102 is configured to detect whether fault indication information is received, and obtain a first detection result. The fault indication information is used to indicate that a fault occurs in an adjacent device of the first metering device.

[007...

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Abstract

The application provides a smart grid self-healing method and device. The power supply of the smart grid is a distributed power supply. The method is applied to the first metering device. The method includes: obtaining the power supply information data table of each surrounding metering device in real time; Fault indication information, to obtain the first detection result, the fault indication information is used to indicate that the adjacent equipment of the first metering device has failed; when the first detection result indicates that the fault indication information is received, according to the obtained power supply information data of each surrounding measurement device The table determines the optimal power supply source and power supply path for grid fault recovery. When a fault occurs at one or more points in the power grid, the smart grid self-healing method and device provided by this application do not need to manually collect fault information for analysis and judgment and formulate a recovery plan, and the adjacent points of the fault point can automatically find the best power supply The power supply and power supply path quickly achieve grid fault recovery, and the fault recovery time is greatly shortened compared with the existing technology.

Description

technical field [0001] The invention relates to the technical field of grid systems, in particular to a smart grid self-healing method and device. Background technique [0002] The power grid is a system composed of transmission, transformation and distribution lines connecting various power plants, substations and power users. The existing power grid usually adopts the way that the power supply supplies power to users through power supply facilities such as lines and substations. Please refer to figure 1 , similar to a top-down tree structure. figure 1 In the provided grid structure, once a certain point fails, it will directly affect the power supply of its downstream users. [0003] In order to solve the above problems, the N-1 power supply mode has emerged, and the N-1 power supply mode is: any independent component (such as generators, transmission lines, transformers, etc.) of the N components of the power system fails and is cut off Finally, it should not cause pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00
Inventor 李孟兴王海燕
Owner STATE GRID CORP OF CHINA
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