Driving control system of intelligent isolation switch of micro power grid

Abstract

The invention relates to a driving control system of an intelligent isolation switch of a micro power grid. The system comprises a main circuit, wherein the main circuit comprises a static switch, a lower-level controller, an upper-level controller and a simulation signal collecting board, wherein the static switch is arranged between the micro power grid and a main power grid, the lower-level controller is used for controlling the switch, the upper-level controller is used for controlling the lower-level controller, and the simulation signal collection board is used for sending the detected voltage and current signal between the micro power grid and the main power grid to the upper-level controller. The control process of the system comprises the following steps of pre-closing, judging whether a bidirectional silicon controlled rectifier is good or not, and triggering a thyristor. The system can guarantee the accuracy and high speed of opening and closing of the switch.

Description

Technical field: [0001] The invention relates to a drive control system for an isolating switch, and more particularly to a drive control system for an intelligent isolating switch in a microgrid. Background technique: [0002] In the power system, micro-grid technology refers to the integration of decentralized power generation resources (such as self-powered power generation equipment or backup generator sets, solar power generation devices, wind power generation equipment and other renewable energy sources) in a certain area or in some enterprises and institutions. Power generation devices) are connected together to supply power to users, and run in parallel with the main large-scale power grid through the distribution network to form a system of joint operation of large-scale power grids and small-scale power generation equipment. In a sense, when the distributed power reaches a certain proportion, it can be called a micro grid. [0003] An important part of the microgr...

AI Technical Summary

Problems solved by technology

[0004] In microgrids, power quality problems for critical and sensitive loads will become clearly visible through static switching, however, one of the main problems of static switching is the power loss of solid-state semiconductor devices

In static switching, due to the continuous line current, this will cause power dissipation and heat loss of the components during normal operation, thus requiring a larger cooling device, which adds additional operating expenses to Controlling the temperature of the SCR will also reduce the efficiency and reliability of the device

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