Test and simulation experiment system for doubly-fed wind power grid-connected controller

Abstract

The invention discloses a test simulation experiment system for a double-fed wind power generation grid-connected controller.The system comprises the grid-connected controller, two programmable logic controllers, two three-phase waveform generators, two current control relays, a multipath photovoltaic conversion panel, a temperature simulating panel, and an upper control terminal in data interaction with the grid-connected controller.A master power module is electrically connected with a multipath power input panel through a multipath power distributor.The grid-connected controller is provided with a digital quantity input port, a digital quantity output port, a rotate speed encoder fiber input port, an analog quantity voltage input panel, an analog quantity current input panel, a multipath power conversion panel, a net side inverter fiber output port, a rotor side inverter fiber output port, a sensor power supply output port and a temperature sensor panel.The test simulation experiment system can finish logic tests, rotor speed simulation tests, current analog quantity input tests, voltage simulation quantity input tests, net side inversion PWM wave output tests and rotor side inversion PWM wave output tests.

Description

technical field [0001] The invention relates to the technical field of wind power generation grid connection, in particular to a test simulation experiment system for a doubly-fed wind power generation grid connection controller. Background technique [0002] As we all know, the doubly-fed wind power grid-connected controller is one of the important equipment in the wind power generator grid-connected, the stability and safety performance of the doubly-fed wind power grid-connected controller is a necessary condition to ensure the wind power grid-connected; at present, the traditional The doubly-fed wind power generation grid-connected controllers are all programmed and sent directly to the manufacturing site for installation, and online debugging is carried out in the test area. The re-debugging of the device often leads to misjudgment of the fault area, prolonging the debugging time and reducing the efficiency. Since the test platform is a low-power test, the control syst...

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Problems solved by technology

[0002] As we all know, the doubly-fed wind power grid-connected controller is one of the important equipment in the wind power generator grid-connected, the stability and safety performance of the doubly-fed wind power grid-connected controller is a necessary condition to ensure the wind power grid-connected; at present, the traditional After the doubly-fed wind power generation grid-connected controllers are programmed, they are directly sent to the manufacturing site for installation, and online debugging is carried out in the test area. After the line fault is eliminated, the controller board is often defective, the debugging process stops, and the controller needs to be replaced. re-debugging often leads to misjudgment of the fault area, prolonging the debugging time and reducing the efficiency

Since the test platform is a low-power test, the control system cannot reach the rated state and overload state, and the online modification parameters are limited by the upper software, which directly causes a shutdown without an expected fault alarm, causing electrical damage to the drag platform, reducing the life of the equipment, and reducing safety performance

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