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Smart power grid seamless fast-switch system and method based on variable parameters with power grids

A smart grid, seamless technology, applied in the direction of electrical components, circuit devices, emergency power supply arrangements, etc., to achieve the effect of ensuring continuous work, small impact, and fast switching speed

Inactive Publication Date: 2014-05-21
中船鹏力(南京)新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method satisfies the potential safety hazards caused by switching between power grids by cutting off part of the load, and does not solve the problem of seamless switching between power grids from the root.

Method used

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  • Smart power grid seamless fast-switch system and method based on variable parameters with power grids
  • Smart power grid seamless fast-switch system and method based on variable parameters with power grids

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0026] The present invention is a disclosed smart grid seamless fast switching system based on network variable parameters such as figure 1 As shown, it includes: a rectifier 1, an inverter 2, a switch 3, and a controller 4. Rectifier 1 is the first rectifier connected to grid A, and the second rectifier connected to grid B is the same as rectifier 1 . The switch 3 includes a first circuit breaker K1 and a second circuit breaker K2. The AC voltage of grid A and grid B is processed by the controller 4 to obtain rectified PWM, and the rectified PWM is isolated and driven by the optocoupler circuit to drive the rectifier 1, and the drive circuit is used to drive the three-phase bridge PWM rectifier circuit, rectified to obtain DC voltage, and the rectified signal is sent to To the controller 4, the rated DC voltage is obtained through PI adjustment, which is used a...

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Abstract

The invention discloses a smart power grid seamless fast-switch system and method based on variable parameters with power grids and belongs to the technical field of smart power grid dispatching. An inverter which forms a loop with a rectifier is added to a switching system, and a controller generates driving signals of the rectifier and the inverter according to collected alternating voltage of a main power grid and a standby power grid, and collected rectified signals and inverted signals. Same pressure, same phase and same frequency can be dynamically achieved, the switching speed is high, the impact is small, and continuous load work can be guaranteed by flexible switching of the power grids.

Description

technical field [0001] The invention discloses a system and method for seamless fast switching of smart grids based on variable parameters with the grid, and belongs to the technical field of smart grid dispatching. Background technique [0002] The rapid switching between different power grids in the smart grid ensures the sustainable development of the national economy. It is widely used in various power plants and industrial fields such as chemical industry, metallurgy, and coal. The development and technological progress of the power system are developing along this goal. Voltage drop or complete power outage has become the primary problem that must be solved to improve the quality of power supply, and ensuring uninterrupted power supply depends on all aspects of power production and transmission. Unstable supply voltage in electronic control systems and other sensitive equipment can lead to paralysis of the entire production line and damage to production equipment as we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
Inventor 徐进纪爱玲
Owner 中船鹏力(南京)新能源科技有限公司