CN110792623A - Intelligent inspection system for fan of control cabinet of wind turbine generator and working method of intelligent inspection system - Google Patents
Intelligent inspection system for fan of control cabinet of wind turbine generator and working method of intelligent inspection system Download PDFInfo
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- CN110792623A CN110792623A CN201911173171.3A CN201911173171A CN110792623A CN 110792623 A CN110792623 A CN 110792623A CN 201911173171 A CN201911173171 A CN 201911173171A CN 110792623 A CN110792623 A CN 110792623A
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- fan
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- wind turbine
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- turbine generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/008—Stop safety or alarm devices, e.g. stop-and-go control; Disposition of check-valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention discloses an intelligent fan inspection system for a control cabinet of a wind turbine generator and a working method of the intelligent fan inspection system, and belongs to the technical field of control of wind driven generators. The lower openings of the fan and the cabinet door fan in the cabinet are connected with the undercurrent relay in series, the undercurrent relay execution loop is connected in series to form a feedback circuit, and the detection module judges the state of the fan of the wind turbine generator system control cabinet according to a feedback signal of the feedback circuit. The system is reasonable in design, can enable operation management personnel to remotely patrol and examine the operation condition of the fan of the control cabinet, is high in finding speed, can be processed at the first time, improves the operation working conditions of all electrical components of the electric control cabinet, improves the stability and reliability of equipment, reduces the failure rate, improves the health level of the wind turbine generator, improves the power generation benefit and increases the profit.
Description
Technical Field
The invention belongs to the technical field of wind driven generator control, and particularly relates to an intelligent fan inspection system for a control cabinet of a wind turbine generator and a working method of the intelligent fan inspection system.
Background
Currently, the wind power generation industry in China is continuously developed, a plurality of wind power plants built earlier run for more than ten years, all systems of a unit are in fatigue states in different degrees, and particularly, cooling fans in a unit cabinet run for a long time for many years, and are damaged in different degrees. The control cabinet fan undertakes heat dissipation of all electrical components of the unit control cabinet, has a very important effect, and at present, the fan monitoring background in China does not have a case of bringing the running condition of the control cabinet fan into a monitoring range, and belongs to a monitoring blind area.
The main electrical control elements of the wind turbine generator are basically all in the fan control cabinet and mainly comprise a PLC functional module, a UPS power supply system, a frequency converter, a stator contactor, a capacitor, a reactor and the like, and the operation working conditions of the main devices determine the operation service life of the electrical elements and the operation stability of the fan. The control cabinet mostly adopts the water-cooling heat dissipation mode, takes away the heat in the cabinet through the circulating water, and the heat in the cooling water is taken away to the rethread cooling fan to this is reciprocal realizes the interior heat dissipation function of cabinet. The monitoring system of the wind turbine generator which adopts the water cooling mode for heat dissipation is provided with the cooling water pressure low alarm, the monitoring function of the cooling water pressure can be basically met, but the monitoring of the fan of the control cabinet is not carried out, and when the fan of the control cabinet is damaged, no alarm or no fault signal is given.
The control cabinet fan is basically operated throughout the year, and the damage of the control cabinet fan is an unavoidable phenomenon. All wind farms will be faced with the situation: when the switch board fan damages, cause the interior temperature of switch board to rise, electric elements all moves under high temperature operating mode in the cabinet, just can discover when electric elements damages other trouble of reporting, for example the converter burns out at high temperature operating mode in-service IGBT, and the fan reports converter trouble, and wind farm personnel need to board and change the converter, except that spare parts cost, change the converter and also consumed certain manpower and materials.
Disclosure of Invention
In order to solve the existing problems, the invention aims to provide an intelligent inspection system for a fan of a control cabinet of a wind turbine generator and a working method thereof, which can find the working state of the fan of the control cabinet of the wind turbine generator in time, improve the stability and reliability of equipment, reduce the failure rate, improve the health level of the fan, improve the power generation benefit and increase the profit.
The invention is realized by the following technical scheme:
the invention discloses an intelligent fan inspection system for a wind turbine generator control cabinet, which is based on a control loop of a fan of the wind turbine generator control cabinet, wherein a lower port of a fan control relay in a cabinet is connected with an under-current relay of the fan in the cabinet in series, a lower port of a cabinet door fan contactor is connected with an under-current relay of the cabinet door fan in series, the under-current relay of the fan in the cabinet and the under-current relay of the cabinet door fan are connected in series to form a feedback loop, one end of the feedback loop is connected with a normally closed contact of the cabinet door fan contactor, the normally closed contact is connected with a power supply module, and the.
Preferably, the detection module is a PLC.
Further preferably, the PLC is bachmann DIO 280.
Further preferably, the feedback loop is connected to a feedback port of the bachmann DIO 280.
Preferably, the in-cabinet fan undercurrent relay and the cabinet door fan undercurrent relay are respectively connected with a current detection device.
Preferably, the in-cabinet fan undercurrent relay and the cabinet door fan undercurrent relay are respectively and independently connected with a detection module.
The invention discloses a working method of the intelligent fan inspection system for the control cabinet of the wind turbine generator, which comprises the following steps:
setting values of a fan undercurrent relay and a cabinet door fan undercurrent relay in the cabinet are set, and after a control loop of a fan of a control cabinet of the wind turbine generator is switched on, a detection module judges the state of the fan of the control cabinet of the wind turbine generator according to a feedback signal of the feedback loop.
Preferably, the setting value of the in-cabinet fan under-current relay is 85% of the rated current of the in-cabinet fan, and the setting value of the cabinet door fan under-current relay is 85% of the rated current of the cabinet door fan.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses an intelligent fan inspection system for a wind turbine generator control cabinet. The system is reasonable in design, can enable operation management personnel to remotely patrol and examine the operation condition of the fan of the control cabinet, is high in finding speed, can be processed at the first time, improves the operation working conditions of all electrical components of the electric control cabinet, improves the stability and reliability of equipment, reduces the failure rate, improves the health level of the wind turbine generator, improves the power generation benefit and increases the profit.
Furthermore, the detection module adopts a PLC, so that the device is strong in universality, convenient to use, wide in application range, high in reliability and strong in anti-interference capability.
Furthermore, the PLC adopts Bachmann DIO280, so that the applicability to most of current wind turbines is strong, the indication effect of a monitoring lamp of a feedback contact is obvious, and operation managers can find problems in time.
Furthermore, the fan undercurrent relay and the cabinet door fan undercurrent relay in the cabinet are respectively connected with a current detection device, the number of fans which normally run in a loop where each undercurrent relay is located can be monitored, and the maintenance strategy is determined according to actual needs.
Further, fan undercurrent relay and cabinet door fan undercurrent relay are equallyd divide and do not have the independent connection detection module in the cabinet, can lock the position of this fan rapidly when certain fan breaks down, further promote the promptness, ensure the safety of unit.
According to the working method of the intelligent fan inspection system for the wind turbine generator control cabinet, after setting values of the fan under-current relay in the cabinet and the cabinet door fan under-current relay are set to be good, in a normal operation state, the detection module judges the state of the fan of the wind turbine generator control cabinet according to the feedback signal of the feedback loop. The automation degree is high, manual operation is not needed, equipment faults can be reflected in time, and the stability and the reliability of the equipment are improved.
Furthermore, setting values of the in-cabinet fan under-current relay and the cabinet door fan under-current relay are respectively set to be 85% of the in-cabinet fan and the cabinet door fan, and because the fan is started to be the rated rotating speed and no overload or underload operation exists, the setting current of the under-current relay is generally 85% of the rated current.
Drawings
FIG. 1 is a schematic circuit diagram of a wind turbine generator system control cabinet fan of the present invention;
FIG. 2 is a schematic diagram of the wiring principle of the under current relay of the present invention
FIG. 3 is a schematic diagram of the connection of the feedback loop of the present invention;
FIG. 4 is a diagram showing the effect of the "monitor lamp" indication of the feedback contact connected to port 68 when PLC uses Bachmann DIO 280.
Detailed Description
The invention will now be described in further detail with reference to the following drawings and specific examples, which are intended to be illustrative and not limiting:
fig. 1 is a schematic circuit diagram of a fan of a wind turbine generator system control cabinet, based on a control loop of the fan of the wind turbine generator system control cabinet, a lower port of a fan control relay in the cabinet is connected in series with an under-current relay of the fan in the cabinet, a lower port of a contactor of a cabinet door fan is connected in series with an under-current relay of the cabinet door fan, the under-current relay of the fan in the cabinet and the under-current relay of the cabinet door fan are connected in series to form a feedback loop, one end of the feedback loop is connected with a normally closed contact of the contactor of the cabinet door fan, the normally closed contact is connected with a. The detection module can be selected from a PLC, and the type is preferably Bachmann DIO280, and the other end of the feedback loop is connected with a feedback port of the Bachmann DIO 280.
Preferably, the in-cabinet fan undercurrent relay and the cabinet door fan undercurrent relay are respectively connected with a current detection device. The number of the fans which normally run in the loop where each under-current relay is located can be monitored, and the maintenance strategy is determined according to actual needs.
Simultaneously, can also be according to actual need, with the cabinet in fan undercurrent relay and cabinet door fan undercurrent relay connect an independent detection module respectively alone, can lock the position of this fan rapidly when certain fan breaks down, further promote the promptness, the safety of guarantee unit.
The invention is in operation:
setting values of a fan undercurrent relay in a cabinet and a cabinet door fan undercurrent relay are set, and after a control loop of a fan of a control cabinet of a wind turbine generator is switched on, a detection module judges the state of the fan of the control cabinet of the wind turbine generator according to a feedback signal of the feedback loop.
Generally, the setting value of the in-cabinet fan under-current relay is 85% of the rated current of the in-cabinet fan, and the setting value of the cabinet door fan under-current relay is 85% of the rated current of the cabinet door fan.
Simulation loop experiments were performed according to the principles of the present invention:
1 module that can provide 24V DC power supply, 1 relay, 1 undercurrent relay and 2 fan connections according to fan control cabinet's mode of connection, wherein undercurrent relay divides two branches and connects two fans, and the rated current of single fan is 2.3A, sets the setting value of relay to 4A:
testing one: and simulating normal operation of the two fans, and displaying that the current flowing through the fan is 4.45A and higher than a setting value of 4A through a universal meter current gear test, wherein the relay performs loop conduction (the resistance value is 0.3 omega), and thus 'normal feedback of fan operation' is completed.
And (2) testing: one fan is simulated to normally operate, one fan is damaged, the current passing through the fan is 2.26A and is lower than a set value of 4A through a multimeter current gear test, the relay execution loop is not conducted (the resistance value is 216.9k omega), and the normal feedback of the fan operation cannot be finished.
Through the two tests, the circuit can be used for judging that the cooling fan in the wind turbine generator cabinet can be brought into the range of the monitoring system thoroughly by introducing the circuit, and the function of monitoring the cooling fan in the cabinet in real time is achieved.
The intelligent fan inspection system for the control cabinet of the wind turbine generator system is applied to a wind turbine generator system of a certain model, the lower ports of control relays K256.6, K248.1 and K256.7 of fans in the cabinet are connected in series with an undercurrent relay, the monitoring current of the undercurrent relay is set to be 4A, the lower port of a contactor K256.8 of a cabinet door fan is connected in series with the undercurrent relay, and the monitoring current of the undercurrent relay is set to be 14A.
The under-current relay execution loop is connected in series, the upper end of the under-current relay execution loop is connected to a 14 port of a contactor K256.8, and the lower end of the under-current relay execution loop is connected to a 68 port of A242.1 in Bachmann DIO 280.
The fans in the cabinet are all started, and the execution loop for controlling the under-current monitoring of the cabinet fans is connected to the port 68 of the a242.1 in the PLC, that is, when the fans in the cabinet are all in healthy operation, no under-current (damaged fan) condition exists, the port 68 of the a242.1 can be found in the fan background solution center, as can be seen from fig. 4, the port 68 of the a242.1 should be in a "light-on" state, whereas when any one of the fans in the cabinet is damaged, an under-current (damaged fan) condition exists, a "disconnection point" exists in the feedback loop, and the port 68 of the a242.1 should be in a "light-off" state.
When the fan was in waiting to wind the state, manual start cabinet internal fan looked over PLC A242.1's 68 mouth feedback contact's "monitoring lamp" instruction, whether remote judgement cabinet internal fan is good, rationally arranges the maintenance task.
It should be noted that the above description is only one embodiment of the present invention, and all equivalent changes of the system described in the present invention are included in the protection scope of the present invention. Persons skilled in the art to which this invention pertains may substitute similar alternatives for the specific embodiments described, all without departing from the scope of the invention as defined by the claims.
Claims (8)
1. The utility model provides a wind turbine generator system switch board fan intelligence system of patrolling and examining, control circuit based on wind turbine generator system switch board fan, a serial communication port, the end opening of fan control relay has concatenated cabinet interior fan undercurrent relay in the cabinet, cabinet door fan contactor's end opening has concatenated cabinet door fan undercurrent relay, cabinet interior fan undercurrent relay and cabinet door fan undercurrent relay establish ties and form feedback loop, feedback loop's one end and cabinet door fan contactor's normally closed contact are connected, normally closed contact is connected with power module, feedback loop's the other end and detection module are connected.
2. The intelligent inspection system according to claim 1, wherein the detection module is a PLC.
3. The intelligent inspection system according to claim 2, wherein the PLC is a bachmann DIO 280.
4. The intelligent inspection system according to claim 3, wherein the feedback loop is connected to a feedback port of Bachmann DIO 280.
5. The intelligent inspection system according to claim 1, wherein the in-cabinet fan undercurrent relay and the cabinet door fan undercurrent relay are each connected with a current detection device.
6. The intelligent inspection system according to claim 1, wherein the in-cabinet fan undercurrent relay and the cabinet door fan undercurrent relay are each separately connected with a detection module.
7. The working method of the intelligent inspection system for the fan of the wind turbine generator system control cabinet according to any one of claims 1 to 6, is characterized by comprising the following steps:
setting values of a fan undercurrent relay and a cabinet door fan undercurrent relay in the cabinet are set, and after a control loop of a fan of a control cabinet of the wind turbine generator is switched on, a detection module judges the state of the fan of the control cabinet of the wind turbine generator according to a feedback signal of the feedback loop.
8. The working method of the intelligent inspection system for the fans of the wind turbine generator system control cabinet according to claim 7, wherein the setting value of the in-cabinet fan under-current relay is 85% of the rated current of the in-cabinet fan, and the setting value of the cabinet door fan under-current relay is 85% of the rated current of the cabinet door fan.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911173171.3A CN110792623A (en) | 2019-11-26 | 2019-11-26 | Intelligent inspection system for fan of control cabinet of wind turbine generator and working method of intelligent inspection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911173171.3A CN110792623A (en) | 2019-11-26 | 2019-11-26 | Intelligent inspection system for fan of control cabinet of wind turbine generator and working method of intelligent inspection system |
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| CN110792623A true CN110792623A (en) | 2020-02-14 |
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| CN201911173171.3A Pending CN110792623A (en) | 2019-11-26 | 2019-11-26 | Intelligent inspection system for fan of control cabinet of wind turbine generator and working method of intelligent inspection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328366A (en) * | 2021-06-21 | 2021-08-31 | 中车唐山机车车辆有限公司 | Electrical cabinet heat dissipation system, control method and device and storage medium |
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