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A distributed intelligent self-recovery system and method

A distributed and self-recovery technology, applied in the field of distribution network, can solve the problems of complex distribution network system structure and the inability of centralized intelligent mode to meet real-time and massive information requirements, so as to improve the reliability of power supply, low cost and good quality. The effect of reliability

Active Publication Date: 2020-12-29
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, centralized intelligence is strongly dependent on the communication system. With the access of a large number of distributed energy sources to the distribution network, the system structure of the distribution network will become more and more complex, and the information that needs to be monitored presents a large number of characteristics. To a certain extent, it cannot meet the real-time and massive information needs

Method used

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  • A distributed intelligent self-recovery system and method
  • A distributed intelligent self-recovery system and method
  • A distributed intelligent self-recovery system and method

Examples

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Effect test

Embodiment 1

[0043] like Figure 1 to Figure 2 Shown is an embodiment of the distributed intelligent self-recovery system of the present invention, including a topology line, a regional power distribution terminal, and a plurality of unit-type power distribution terminals that communicate with the regional power distribution terminal:

[0044] The unit-type power distribution terminal collects the information collection and fault detection of the adjacent switches, uploads it to the regional power distribution terminal in the format of GOOSE information, and accepts the control commands sent by the regional power distribution terminal;

[0045] GOOSE information exchange between regional power distribution terminals and all unit-type power distribution terminals is used for fault location, fault isolation and power supply recovery in non-faulty sections in the entire region;

[0046] The regional distribution terminal will upload the processing result to the main station of the distributio...

Embodiment 2

[0052] This embodiment is an embodiment of a distributed intelligent self-recovery method, which includes the following steps:

[0053] S10. Regional power distribution terminal locates the fault section;

[0054] S20. The regional distribution terminal control switch trips to achieve fault isolation to form fault sections and non-fault sections;

[0055] S30. The regional power distribution terminal controls the non-fault segment to restore power supply in step S20.

[0056] The invention realizes the local protection of the distribution automation system based on the peer-to-peer communication for the distribution terminal of the distribution site, and automatically performs fault judgment, fault isolation and network reconstruction through data information such as fault current and active power direction.

[0057] In step S10, the fault location includes the following steps:

[0058] S11. The regional power distribution terminal calls the wave recording data of the whole ...

Embodiment 3

[0071] like image 3 Shown is an application embodiment of the distributed intelligent self-recovery system and method of the present invention. In this embodiment, circuit breakers UR1, UR2, UR3, UR4, UR5, UR6, and UR7 are used as sectional switches, and the power distribution terminal of UR1 is used as an area It is responsible for completing the information exchange with all unit-type power distribution terminals in the area, collecting the position of each switch, and locating the position of the contact switch in the area through logical judgment.

[0072] When a permanent fault occurs at F1, UR1, UR2, and UR3 calculate their own status, and each unit type power distribution terminal sends its own fault status information to its adjacent unit type power distribution terminal in real time. Depend on image 3 It can be seen from the position of the fault in the middle that UR1 and UR2 are overcurrent and the power direction is positive, and UR1 is the first switch connecte...

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Abstract

The invention relates to the technical field of power distribution networks, and, more specifically, relates to a distributed intelligent self-recovery system and method. The system comprises a topological line, a regional power distribution terminal and a plurality of unit type power distribution terminals communicating with the regional power distribution terminal. The unit type power distribution terminals perform information collection and fault detection of adjacent switches, and upload the information at a GOOSE information format to the regional power distribution terminal, and receivecontrol commands sent by the regional power distribution terminal. The GOOSE information interaction is carried out between the regional power distribution terminal and all unit type power distribution terminals. The regional power distribution terminal uploads a processing result to a power distribution main station. The unit type power distribution terminals and the regional type power distribution terminals are connected with a topological line. According to the invention, the system can achieve the rapid fault isolation, power supply recovery of a non-fault area and decentralized control processing, achieves the full-distributed distribution network self-recovery, does not need the participation of a distribution main station in the self-recovery process, reduces the fault power failure time, and improves the power supply reliability of the distribution network.

Description

technical field [0001] The present invention relates to the technical field of power distribution networks, and more particularly, to a distributed intelligent self-recovery system and method. Background technique [0002] The network structure of the power distribution system is becoming more and more complex, the power users have higher and higher requirements for power quality and power supply reliability, and the weak links of the power distribution network are becoming more and more prominent, resulting in a situation in which power demand is not coordinated with power grid facilities. In the recovery and processing of distribution network failures, distribution network load transfer and other issues, this situation is increasingly unable to meet the needs of the market. The feeder automation system refers to the automation of the feeder line between the outlet of the substation and the user's electrical equipment. It is an automation system that enables power distribut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J13/00H02H3/06H02H7/28
CPCY02E60/00Y04S10/20
Inventor 张杰明陈冠宇马秉伟黄炜周涛刘明胡峰陈忠颖陈政罗锦德
Owner GUANGDONG POWER GRID CO LTD
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