Distributed intelligent self-recovery system and method

A self-recovery and distributed technology, applied in the field of power distribution network, can solve problems such as the complex structure of distribution network 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 intermediate The effect of fewer links

Active Publication Date: 2019-05-03
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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  • Distributed intelligent self-recovery system and method
  • Distributed intelligent self-recovery system and method
  • Distributed intelligent self-recovery system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Such as Figure 1 to Figure 2 Shown is an embodiment of the distributed intelligent self-recovery system of the present invention, which includes a topology line, a regional power distribution terminal, and a plurality of unit power distribution terminals communicating with the regional power distribution terminal:

[0044] The unit power distribution terminal collects information collection and fault detection of adjacent switches and 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 interaction between regional power distribution terminals and all unit power distribution terminals is used for fault location, fault isolation and power supply restoration of non-faulty sections in the entire region;

[0046] The regional power distribution terminal sends the processing results to the main distribution network;

[0047] Both the un...

Embodiment 2

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

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

[0054] S20. Regional distribution terminal control switch trips to realize fault isolation and form faulty and non-faulty sections;

[0055] S30. The regional power distribution terminal controls the non-faulty section in step S20 to restore power.

[0056] The invention realizes in-situ protection of the distribution automation system based on peer-to-peer communication for the distribution terminal at 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 summons the recording data of the whole region, and each unit power distribution te...

Embodiment 3

[0071] Such as image 3 Shown are application embodiments of the distributed intelligent self-recovery system and method of the present invention. In this embodiment, circuit breakers UR1, UR2, UR3, UR4, UR5, UR6, UR7 are used as section switches, and the power distribution terminal of UR1 is used as the area The type distribution terminal is responsible for completing the information interaction with all unit type distribution terminals in the area, collecting the position of each switch, and determining the position of the contact switch in the positioning area through logic.

[0072] When a permanent fault occurs at F1, UR1, UR2, and UR3 each calculate its own state, and each unit type power distribution terminal sends its own fault status information to its neighboring unit type power distribution terminal in real time. by image 3 The middle fault location shows that UR1, UR2 are overcurrent and the power direction is positive, and UR1 is used as the first switch connected to...

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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 specifically, 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, and the requirements of power users for power quality and power supply reliability are getting higher and higher, and the weak links of the power distribution network are becoming more and more prominent, forming a situation of incoordination between power demand and grid facilities. In the recovery and processing of distribution network failures, and distribution network load transfer, this situation is increasingly unable to meet market demand. 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 the power distribution company to monitor, ...

Claims

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Application Information

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Patent Type & Authority Applications(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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