A gas-fired power plant π-type homologous nuclear phase system and method

Abstract

The invention discloses a π-type homologous nuclear phase system and method for a gas-fired power plant. The excitation unit of the gas-turbine generator is connected with the rotor of the gas-turbine generator. And the first synchronous point unit of the gas turbine generator is connected with the low-voltage side of the main transformer of the gas turbine, the high-voltage side of the main transformer of the gas turbine is connected with the high-voltage bus through the second synchronous point unit of the gas turbine generator, and the high-voltage side of the main transformer of the steam turbine is connected through the The generator synchronization point unit is connected to the high-voltage busbar, and the low-voltage side of the main transformer of the steam turbine is connected to the output end of the turbine generator through the closed busbar at the outlet of the turbine generator. Complete, no need to frequently change the operation mode and operate the knife switch, fewer sources of danger, saving experiment time and fuel, higher experiment efficiency, and can effectively reduce asynchronous accidents caused by wiring errors.

Description

technical field [0001] The invention belongs to the technical field of power debugging and power testing, and relates to a π-type homologous nuclear phase system and method for a gas-fired power plant. Background technique [0002] As a high-efficiency and environmentally friendly power generation device, gas-fired units are widely used all over the world. The gas usually adopts the gas-steam combined cycle mode, that is, the high-temperature flue gas after the combustion of natural gas and air enters the gas turbine to expand and do work to drive the gas generator to generate electricity. After doing work, the flue gas enters the waste heat boiler through the flue, and the high-temperature flue gas heats the boiler feed water to produce superheated steam to drive the turbine generator to do work. Gas-fired power plants mostly use "one-to-one" (one gas turbine with one waste heat boiler to drive one turbo-generator), and gas-fired power plants have many synchronous points a...

AI Technical Summary

Problems solved by technology

In the existing homologous nuclear phase experiment, the method of generator with bus step-up or transformer reverse transmission is usually used, and each synchronous point is respectively subjected to a homologous nuclear phase. It is necessary to frequently change the operation mode of the power grid, frequently operate the circuit breaker, Isolation knife switch, there are problems such as long nuclear phase test time, low test efficiency and many hazards

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