Distributed protection measurement and control device and method

Abstract

The invention discloses a distributed protection measurement and control device, which comprises protection measurement and control units. Each protection measurement and control unit corresponds to one switch interval. Each protection measurement and control unit is connected with all switches in the corresponding switch interval for monitoring the positions of the switches and controlling the states of the switches. Each protection measurement and control unit is in communication connection with the adjacent protection measurement and control unit through IEC61850+GOOSE peer-to-peer communication. The protection measurement and control units are used for realizing fault location through the protection measurement and control units themselves or information interaction with the adjacent protection measurement and control units when a certain node of the power supply line has a fault, and performing fault isolation and power supply transfer by changing the GOOSE subscription relationship between the switches of the protection measurement and control units themselves or between the switches of the protection measurement and control units and the adjacent protection measurement and control units. According to the invention, real decentralization is realized, all the interval protection measurement and control units can conduct GOOSE communication, redundancy processing can be carried out among the interval units, and the reliability of intelligent distribution is greatly improved.

Description

technical field [0001] The invention relates to the technical field of distribution network automation, in particular to a distributed protection measurement and control device and method. Background technique [0002] In recent years, the domestic medium and low voltage distribution automatic network is undergoing a rapid development stage, and more and more attention has been paid to the construction of the distribution network's own grid. At present, the typical wiring modes of the domestic distribution network mainly include single-ring, double-ring, single-radiation, double-radiation, and petal-type. The application of distribution network tends to be complicated, and the traditional centralized and local feeder automation logic (voltage time type and voltage current type) can no longer meet the current distribution network automation needs. The intelligent distributed distribution automation of basic IEC61850+GOOSE peer-to-peer communication is developed from this. T...

AI Technical Summary

Problems solved by technology

When it fails, the distributed feeder automation function will be impossible to talk about, and the reliability of distribution automation is difficult to guarantee;

[0009] 3. The protection measurement and control unit and the integrated measurement and control communication unit belong to different hardware platforms. The product requires two-line development and two-line maintenance, which increases the difficulty of development and the cost of personnel time. The post-production cost is high, it is difficult to form a scale effect, and the cost of material storage and procurement is increased. ;

[0010] 4. The two parts of the products cannot be interface compatible. In fact, the integrated measurement and control communication unit is used as the master device and the protection measurement and control unit is used as the slave device, which cannot be used as backup and compatible with each other.

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