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A microgrid relay protection device and protection method

A technology of relay protection device and micro-grid, applied in emergency protection circuit device, circuit device, emergency protection device with automatic disconnection, etc., can solve the problems of protection of electrical equipment safety hazards, troublesome installation, complicated design, etc.

Active Publication Date: 2022-06-28
HXXN ELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of the existing relay protection devices for transmission lines is relatively complicated, and it is troublesome to install in practical applications, inconvenient to use, and poor in reliability.
When a fault occurs in the power system, the fault circuit cannot be disconnected quickly and selectively through the circuit breaker; when the power system operates abnormally, it cannot quickly send a signal to remind the on-duty personnel to deal with it, so there are hidden dangers in protecting the safety of electrical equipment

Method used

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  • A microgrid relay protection device and protection method
  • A microgrid relay protection device and protection method
  • A microgrid relay protection device and protection method

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] see Figure 1-5 , the present invention provides a kind of technical scheme:

[0034] A microgrid relay protection device and protection method, comprising a casing 1, a current sensor 6, a numerically controlled push-pull controller 8 and an alarm device 10, the left and right ends of the casing 1 are respectively provided with a terminal 11, and the current sensor 6 is located in the relay. Inside the electric protection dev...

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Abstract

The invention belongs to the technical field of protection circuits, and in particular relates to a relay protection device and protection method for a micro-grid, including a terminal, a current sensor and a numerically controlled push-pull controller. The terminal is used for connecting wires, and the current sensor is used for measuring current changes. The directional output control signal, the numerical control push-pull controller is used to receive the control signal output by the current sensor, and then pushes and pulls the sliding conductor block according to the control signal. The micro-grid is protected by the relay protection device of the micro-grid and its use protection method to prevent the damage of the micro-grid due to the overcurrent of the local circuit.

Description

technical field [0001] The invention belongs to the technical field of protection circuits, in particular to a microgrid relay protection device and a protection method. Background technique [0002] In the field of electronic technology, the relay protection device can send a warning signal to the operating duty personnel in time when the power components in the power system or the power system itself fails to endanger the safe operation of the power system, or directly to the controlled circuit breaker. An automated measure and device that issues a trip order to stop the progression of these events. Some relay protection devices are often installed on the transmission lines of power plants. When the current flow of the transmission lines is too high, the protection lines will be cut off. The existing relay protection devices for transmission lines are complicated in design, troublesome to install in practical applications, inconvenient to use, and have poor reliability. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/28H02H3/04
CPCH02H7/28H02H3/04
Inventor 刘天航谭金辉莫益
Owner HXXN ELECTRICITY