CN202696531U

CN202696531U - Master-slave excitation controller for double-fed wind generating set

Info

Publication number: CN202696531U
Application number: CN 201220298537
Authority: CN
Inventors: 张继勇; 杨鹏; 张苏新; 汪宪政; 陈良; 陈东雷
Original assignee: YANGZHOU BAIYUN ELECTRICAL APPLIANCE EQUIPMENT CO Ltd
Current assignee: Yangzhou Deyun Electric Equipment Co ltd
Priority date: 2012-06-25
Filing date: 2012-06-25
Publication date: 2013-01-23
Anticipated expiration: 2022-06-25

Abstract

The utility model discloses a master-slave excitation controller for a double-fed wind generating set, which belongs to the field of power generators. The master-slave excitation controller comprises a double-PWM (Pulse-Width Modulation) convertor connected with a power grid by a breaker, wherein the double-PWM convertor is also connected with the double-fed wind generating set, signal input end of the double-PWM convertor is connected with the signal output end of a DSP (Digital Signal Processor), the signal output end of the DSP is connected with the signal input end of a GPRS (General Packet Radio Service) wireless communication module, the DSP is further connected with an FPGA (Field Programmable Gate Array) chip, the signal input end of the FPGA chip is connected with the signal output end of a data acquisition module, the signal output end of the FPGA chip is connected with the signal input end of a PLC (Programmable Logic Controller), and the signal output end of the PLC is connected with a relay set. According to the master-slave excitation controller, real-time monitoring of a working condition and operation control of a wind driven generator are realized with the adoption of master and slave controllers, the effect of power grid faults on the wind generating set is avoided, the operation of the wind generating set is more reliable, and the excitation controller can be used for the wind generating set.

Description

Master-slave mode double-fed wind power generator group excitation controller

Technical field

The utility model relates to a kind of generating set, particularly a kind of wind turbine generator.

Background technology

Wind power generation is as cleaning, abundant, regenerative resource, day by day being subject to the whole world extensively payes attention to, particularly obtained this year developing rapidly, when the distinguished and admirable pneumatic equipment blades made of crossing, when driving the wind energy conversion system rotation, wind energy transformation is mechanical energy, and wind energy conversion system is the drawing generator rotor again, generator is to mains supply, and mechanical energy is converted into electric energy.

Along with the increase with separate unit wind turbine pool-size of increasing that accesses the wind-powered electricity generation unit in the electrical network, electric power system has had requirements at the higher level to the grid connected wind power unit operation, wherein significantly still can keep under the AC network fault being connected with electrical network and to the electric power system continued power may, namely have uninterrupted operation ability under the external fault.Because compare excitation variable frequency power supply capacity with generator rating power less; if do not take correct safeguard measure when under fault, running without interruption; then can hinder for some reason makes the generator amature side induce large electric current; cause the safety of rotor-side converter overcurrent and DC link overvoltage, serious harm wind-powered electricity generation unit core component, this is the practical problem that present domestic running of wind generating set controller enterprise does not consider and must face in the wind-powered electricity generation unit design.

The utility model content

The purpose of this utility model be for wind turbine generator of the prior art when electrical network breaks down; overcurrent and overvoltage easily occur; thereby the problem of serious harm wind turbine generator core component safety; a kind of master-slave mode double-fed wind power generator group excitation controller is provided; so that the wind turbine generator operation is more reliable; protect generating set, prolonged the useful life of generating set.

The purpose of this utility model is achieved in that a kind of master-slave mode double-fed wind power generator group excitation controller, comprise through circuit breaker and be connected to two pwm converters on the electrical network, described pair of pwm converter also links to each other with the double-fed wind power generator group, the signal input part of described pair of pwm converter links to each other with the signal output part of dsp processor, the signal output part of described dsp processor also links to each other with the signal input part of GPRS wireless communication module, described dsp processor also links to each other with fpga chip, the signal input part of described fpga chip links to each other with the signal output part of data acquisition module, the signal output part of described fpga chip links to each other with the signal input part of PLC, and the signal output part of described PLC links to each other with the relay group.

As further improvement of the utility model, described dsp processor adopts the TMS320F28335 chip.

During the utility model work, data acquisition module gathers the on-the-spot operational factor of generating set, and will collect data and send to dsp processor through fpga chip, dsp processor is processed computing to the data that collect, send again corresponding control command to fpga chip, fpga chip sends to PLC with control command again, again control relay group action of PLC, realize the order operation of generator, dsp processor is uploaded to host computer with data message and the control command that collects through the GPRS wireless communication module, realize the radio communication with host computer, simultaneously, DSP gives two pwm converters according to the data parameters sending controling instruction that receives, the control generating set realize be incorporated into the power networks and independent operating between carry out the switching action.Compared with prior art; the beneficial effects of the utility model are; the utility model adopts dsp processor; fpga chip is respectively as master controller; pilot controller; realization is to the Real-Time Monitoring of wind-driven generator operating state; controlling run; when electric network fault; wind turbine generator can automatically switch into independent operating; avoid generating set to receive the impact that electric network fault brings; so that the wind turbine generator operation is more reliable; protect generating set, prolonged the useful life of generating set, and the master-slave digital distribution control structure that adopts; the master control architecture of simplifying has reduced equipment cost.The utility model can be used in the wind turbine generator.

Description of drawings

Fig. 1 is the utility model control principle drawing.

Embodiment

A kind of master-slave mode double-fed wind power generator group excitation controller as shown in Figure 1, comprise through circuit breaker and be connected to two pwm converters on the electrical network, two pwm converters also link to each other with the double-fed wind power generator group, the signal input part of two pwm converters links to each other with the signal output part of dsp processor, the signal output part of dsp processor also links to each other with the signal input part of GPRS wireless communication module, dsp processor also links to each other with fpga chip, the signal input part of fpga chip links to each other with the signal output part of data acquisition module, the signal output part of fpga chip links to each other with the signal input part of PLC, the signal output part of PLC links to each other with the relay group, and dsp processor adopts the TMS320F28335 chip.

The single DSP control chip of the utility model take TMS320F28335 as core is equipped with FPGA as pilot controller.Master control DSP center of gravity mainly is placed on the computing of processing controls algorithm; carry out data acquisition process by FPGA; utilize simultaneously FPGA to expand I/O interface and aided programming; with data collecting module collected to real time data send to DSP and process computing; send that command adapted thereto control wind turbine generator is being incorporated into the power networks and independent operating between switching; and the order operation by PLC control generating set relay; realization is to the protection of generating set; the master-slave digital distribution control structure that adopts; the master control architecture of simplifying has reduced equipment cost.

The utility model is not limited to above-described embodiment; on the basis of the disclosed technical scheme of the utility model; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection range of the present utility model.

Claims

1. master-slave mode double-fed wind power generator group excitation controller, it is characterized in that, comprise through circuit breaker and be connected to two pwm converters on the electrical network, described pair of pwm converter also links to each other with the double-fed wind power generator group, the signal input part of described pair of pwm converter links to each other with the signal output part of dsp processor, the signal output part of described dsp processor also links to each other with the signal input part of GPRS wireless communication module, described dsp processor also links to each other with fpga chip, the signal input part of described fpga chip links to each other with the signal output part of data acquisition module, the signal output part of described fpga chip links to each other with the signal input part of PLC, and the signal output part of described PLC links to each other with the relay group.

2. master-slave mode double-fed wind power generator group excitation controller according to claim 1 is characterized in that, described dsp processor adopts the TMS320F28335 chip.