A heat and power cogeneration unit controller

Abstract

The invention discloses a controller for a heat and power cogeneration unit, relates to the technical field of heat and power cogeneration, and aims to reduce the impact on the heat and power cogeneration unit when the quasi-synchronous grid connection operation is performed on the heat and power cogeneration unit. The controller includes a first data acquisition unit and a central processing unit, and the first data acquisition unit is used to collect the actual value of the first phase voltage of the first phase of the power grid at the merge point, and collect the first phase voltage of the combined heat and power unit. The real value of the first phase voltage of the unit, the slip voltage between the second phase of the power grid at the acquisition point and the second phase of the cogeneration unit; the central processing unit is used to The real value of the voltage of the first phase of the unit, the coincidence degree of the voltage waveform of the first phase of the computer unit and the voltage waveform of the first phase of the grid. The heat and power cogeneration unit controller provided by the invention is used for controlling the heat and power cogeneration unit.

Description

technical field [0001] The invention relates to the technical field of heat and power cogeneration, in particular to a controller for a heat and power cogeneration unit. Background technique [0002] Combined Heat And Power (CHP) unit is a unit that simultaneously generates electricity and heat from the same fuel. It has the advantages of saving energy, improving fuel thermal efficiency, and reducing exhaust emissions, so it has attracted widespread attention. [0003] At present, the working status of the combined heat and power unit usually includes the isolated grid status in which the load is supplied independently, and the grid-connected status in which the load is supplied with power together with the grid. When the co-generation unit is required to work in the grid-connected status, it is usually Connecting the combined heat and power unit to the grid is to perform grid-connected operation on the combined heat and power unit. [0004] When cogeneration units are conn...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a cogeneration unit controller, which is used to solve the quasi-synchronous grid connection of the cogeneration unit due to the large error in judging whether the cogeneration unit meets the phase conditions in the prior art The technical problem that the combined heat and power unit is subjected to a large impact during operation

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