CN202676882U - Power monitoring system for wind-turbine master control system - Google Patents
Power monitoring system for wind-turbine master control system Download PDFInfo
- Publication number
- CN202676882U CN202676882U CN 201220179981 CN201220179981U CN202676882U CN 202676882 U CN202676882 U CN 202676882U CN 201220179981 CN201220179981 CN 201220179981 CN 201220179981 U CN201220179981 U CN 201220179981U CN 202676882 U CN202676882 U CN 202676882U
- Authority
- CN
- China
- Prior art keywords
- power
- control system
- module
- generating set
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model discloses a power monitoring system for a wind-turbine master control system. The power monitoring system comprises a control unit in the wind-turbine master control system, and is characterized in that, the wind-turbine master control system is further provided with a power detecting unit; the power detecting unit comprises a power measuring module, at least one voltage measuring element and at least one current measuring element, the at least one voltage measuring element and the at least one current measuring element are connected with input terminals of the power measuring module, and the power measuring module communicates with the control unit through a communication interface of the control unit. The beneficial effects of the utility model are that, device faults that can not be detected by the conventional wind turbines can be monitored in first time, thereby preventing the faults from amplifying and causing accidents; high-power devices are under long-term monitoring, so that the change tendency of the devices can be observed so as to provide a fault early warning; besides, the system can be used as fault diagnosis means to improve the fault processing efficiency.
Description
Technical field
The utility model relates to a kind of power monitoring system, especially a kind of power monitoring system of wind generating set main control system.
Background technology
20 years designed lives of current wind power generating set, and maintenance cost is high, and it is vital to guarantee that it is in good running status.
Generally do not adopt the power monitoring measure in the master control system of existing wind power generating set, namely do not monitor the electric current of master control current supply circuit or the concrete numerical value of power, the measures such as protection such as overvoltage, under-voltage and overcurrent are only arranged; When PLC in the master control system implements a control action, can only come by the state of respective actuators the FEEDBACK CONTROL action whether correctly to implement, whether really by the expectation operation of control, PLC can't monitor for controlled device.And when wind power generating set is normally moved, all be to adopt remote monitoring, the monitor staff can't see on-the-spot situation.
For example control the startup of a cooling fan motor: PLC control output module output control signal, control corresponding relay adhesive, PLC learns really adhesive of relay by the state that reads relay auxiliary contact, and control action is correctly implemented; Whether but start for motor, PLC can't judge.If for a certain reason,, virtual connection unreliable such as the cooling fan motor current supply circuit wiring that is connected with the relay main contacts etc., thereby cause relay adhesive rear motor because of must not electricity or during the phase shortage malfunction, wind power generating set will move under the fan failure state until overtemperature alarm, and this will be very disadvantageous to unit.
The utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of power monitoring system of wind generating set main control system being provided.This technical scheme is used for traditional wind group master control system, can monitor master control system device running status, has timely discovery device fault, and the power of device done long term monitoring, monitor its variation tendency, fault pre-alarming avoids causing therefrom larger accident.
For achieving the above object, the utility model adopts following technical proposals:
A kind of power monitoring system of wind generating set main control system, it comprises the control module in the wind generating set main control system, and power detecting unit also is set in wind generating set main control system; Described power detecting unit comprises power measurement module and at least one voltage measurement element and at least one current measurement device, described at least one voltage measurement element be connected current measurement device and be connected with the power measurement module input end, described power measurement module is by control module communication interface and its communication.
Described control module is the PLC controller.
Described voltage measurement element comprises the voltage transformer (VT) that is installed in the master control system current supply circuit.
Described current measurement device comprises the current sensor that is installed in the master control system current supply circuit.
Described power measurement module comprises computing unit and communication unit, and computing unit is connected with communication unit.
Described computing unit comprises single-chip microcomputer; Described communication unit comprises serial communication module, and described single-chip microcomputer is connected with serial communication module, the communication interface communication of described serial communication module and PLC controller.
The utility model control principle of work:
A kind of power monitoring system of wind generating set main control system, described control module comprises the PLC controller, the PLC controller that this PLC controller also is master control system namely embeds power monitoring system in the control of master control system; Described at least one voltage measurement element be connected current measurement device and be connected input as power measurement module with power measurement module, described power measurement module by communication interface to data such as PLC controller transmission voltage, electric current and power.
Described voltage measurement element comprises voltage transformer (VT), can be with the signal in the tested voltage transitions success ratio measurement module range;
Described current measurement device comprises current sensor, can be with the signal in the tested current conversion success ratio measurement module range;
Described power measurement module comprises computing unit and communication unit, and described computing unit has the function that the calculated signals that transmits according to measuring unit goes out the power in tested voltage, tested electric current and tested loop; Described communication unit has the function with the communication of PLC controller, realizes that the data such as tested voltage, tested electric current and measured power transmit to the PLC controller.In actual motion, this system adopts:
(1) appraises and decides under the kilter that detects each device in the loop, before starting and the power change values Δ P after the stable operation, and determine the threshold value of its reasonable change.
(2) add Δ P in program and judge statement, Δ P does not exceed threshold value normal operation then is described, exceeds the Times fault.In judgement, consider Δ t corresponding to Δ P, when other devices in Δ t in the detection loop have start and stop to change, need overlap-add procedure.
(3) show in real time power change curve and event at master control monitoring software interface.But monitor staff's Real Time Observation is controlled event and power situation of change, can be used as simultaneously the foundation of fault diagnosis.
(4) for the device that needs long term monitoring, periodic logging start and stop power change curve, and the comparison that performs an analysis.As monitor yaw motor, and automatically recording, preserve the information such as powertrace when in software, work being set, the monitor staff is by regularly contrast, and whether good, make fault pre-alarming if monitoring its running status.Power monitoring system is applied in the master control control loop, is used for control feedback and fault pre-alarming.Its structure and hardware form, and is except power grade is smaller, little with traditional on the market power measurement module difference.
The utility model beneficial effect is:
The utility model relates to a kind of power monitoring system of wind generating set main control system.This system is by increasing power detecting unit, be embedded into main control PLC control, the actual energising ruuning situation of the high power devices such as the yaw motor on the monitoring wind-power electricity generation group, fan electromotor, well heater, can the very first time monitor the device fault that the traditional wind group can't detect, prevent that the fault amplification from causing the accident; Simultaneously these high-power parts are carried out long term monitoring, its variation tendency of observable is made fault pre-alarming; Can also as a kind of fault diagnosis means, improve fault handling efficient.
The utility model has been filled up the blank of traditional wind group master control system to the device monitoring running state, in time finds device fault, and the cascading failure of avoiding so bringing guarantees that wind power generating set operates in kilter, guarantees the wind power generating set life-span; Power to device is done long term monitoring, monitors its variation tendency, and fault pre-alarming avoids causing therefrom larger accident.
The utility model is applied to can well monitor the ruuning situation of the devices such as Power generator fan, yaw motor, gear case fan in several typhoon power generator groups; And in the monitoring to yaw motor, found to be stained with the potential safety hazard that oil causes the yaw braking deficiency because of brake disc.
Description of drawings
Fig. 1 is the utility model electrical principle schematic block diagram.
Among the figure 1, voltage transformer (VT), 2, current sensor.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Among Fig. 1, a kind of power monitoring system of wind generating set main control system, it comprises control module, increases power detecting unit in the system; Described control module comprises the PLC controller, and the PLC controller that this PLC controller also is master control system namely embeds power monitoring system in the control of master control system; Described power detecting unit comprises power measurement module and at least one voltage measurement element and at least one current measurement device, described at least one voltage measurement element be connected current measurement device and be connected input as power measurement module with power measurement module, described power measurement module by communication interface to data such as PLC controller transmission voltage, electric current and power.Can adopt other models in being seen GPU-3 REC on the market or the series of products to choose to described power measurement module.
Described voltage measurement element comprises the voltage transformer (VT) 1 that is installed in the master control system current supply circuit, with the signal in the tested voltage transitions success ratio measurement module range;
Described current measurement device comprises the current sensor 2 that is installed in the master control system current supply circuit, converts tested unsteady flow in the power measurement module range signal;
Described power measurement module comprises computing unit and communication unit, and computing unit is connected with communication unit.Computing unit comprises single-chip microcomputer; Communication unit comprises serial communication module, and described computing unit has the function that the calculated signals that transmits according to measuring sensor goes out the power in tested voltage, tested electric current and tested loop; Described communication unit has the function with the communication of PLC controller, realizes that the data such as tested voltage, tested electric current and measured power transmit to the PLC controller.
The utility model patent comprises that the power monitoring technology reaches take fault detect, the fault pre-alarming technology of power monitoring technology as the basis.
Illustrate: (1) is located at the voltage transformer (VT) 1 on the phase line, and totally 3, if the power measurement module input voltage range satisfies, can save voltage measurement element, directly measure voltage;
(2) be located at current sensor 2 on the phase line, totally 3.
Annotate: model, the range of measuring sensor, power measurement module are decided according to the design of master control system.
Embodiment adopts:
(1) major loop of master control system or only at the branch road of needs monitorings voltage, current measurement device are installed in cabinet.
(2) installation power measurement module is connected voltage, current measurement device, and by connection power measurement module is connected in main control PLC with power measurement module.
Although above-mentionedly by reference to the accompanying drawings embodiment of the present utility model is described; but be not the restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (6)
1. the power monitoring system of a wind generating set main control system, it comprises the control module in the wind generating set main control system, it is characterized in that, power detecting unit also is set in wind generating set main control system; Described power detecting unit comprises power measurement module and at least one voltage measurement element and at least one current measurement device, described at least one voltage measurement element be connected current measurement device and be connected with the power measurement module input end, described power measurement module is by control module communication interface and its communication.
2. the power monitoring system of wind generating set main control system as claimed in claim 1 is characterized in that, described control module is the PLC controller.
3. the power monitoring system of wind generating set main control system as claimed in claim 1 is characterized in that, described voltage measurement element comprises the voltage transformer (VT) that is installed in the master control system current supply circuit.
4. the power monitoring system of wind generating set main control system as claimed in claim 1 is characterized in that, described current measurement device comprises the current sensor that is installed in the master control system current supply circuit.
5. the power monitoring system of wind generating set main control system as claimed in claim 2 is characterized in that, described power measurement module comprises computing unit and communication unit, and computing unit is connected with communication unit.
6. the power monitoring system of wind generating set main control system as claimed in claim 5 is characterized in that, described computing unit comprises single-chip microcomputer; Described communication unit comprises serial communication module, and described single-chip microcomputer is connected with serial communication module, the communication interface communication of described serial communication module and PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179981 CN202676882U (en) | 2012-04-25 | 2012-04-25 | Power monitoring system for wind-turbine master control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220179981 CN202676882U (en) | 2012-04-25 | 2012-04-25 | Power monitoring system for wind-turbine master control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676882U true CN202676882U (en) | 2013-01-16 |
Family
ID=47497779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220179981 Expired - Lifetime CN202676882U (en) | 2012-04-25 | 2012-04-25 | Power monitoring system for wind-turbine master control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676882U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866635A (en) * | 2021-12-01 | 2021-12-31 | 山东蓝湾新材料有限公司 | Method for determining motor fault occurrence time in chemical equipment |
-
2012
- 2012-04-25 CN CN 201220179981 patent/CN202676882U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866635A (en) * | 2021-12-01 | 2021-12-31 | 山东蓝湾新材料有限公司 | Method for determining motor fault occurrence time in chemical equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201181322Y (en) | Electric network fault remote intelligent monitoring device | |
| CN201654159U (en) | Short-circuit and earth-fault indicator | |
| CN201835985U (en) | Embedded monitoring instrument and wind generating set thereof | |
| CN203658520U (en) | Intelligent cable fault indicator | |
| CN203394009U (en) | Intelligent scaffold lifting control system | |
| CN104660440A (en) | Blade server management system and control method thereof | |
| CN206556774U (en) | Buried cable joint fault real-time positioning system at a distance | |
| CN203299319U (en) | Locomotive insulation detection device | |
| CN202068238U (en) | Wind chassis type transformer protection and monitoring device | |
| CN202676882U (en) | Power monitoring system for wind-turbine master control system | |
| CN201650588U (en) | Control device for brushless wind generator | |
| CN102290864B (en) | Method and device for implementing virtual load management terminal | |
| CN207410045U (en) | A kind of wind power generating set auxiliary power supply system grid adaptability system | |
| CN103475028A (en) | Brake feedback device control system and method for counter current resistance of power supply system | |
| CN204344370U (en) | A kind of intelligent wind power detects and power-generating control system | |
| CN106291241A (en) | A kind of electric power cable intelligent fault warning system | |
| CN207490492U (en) | A kind of protection system of electric motor | |
| CN203119627U (en) | Intelligent comprehensive management system of base station power supply | |
| CN202770973U (en) | Megawatt grade wind generating set pitch system cell automatic test system | |
| CN203146291U (en) | Energy-saving control system of dual-mode speed regulation type water feed pump unit | |
| CN202854251U (en) | Water meter valve detection circuit | |
| CN203012096U (en) | Running state detecting device for energy storage mechanism | |
| CN202494721U (en) | Remote multiphase cost control electric energy meter | |
| CN204240032U (en) | A kind of signal boxcar for the monitoring of Wind turbines automatic lubricating system | |
| CN205790272U (en) | A kind of EMUs emergency starting power supply with remote monitoring function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
|
| CX01 | Expiry of patent term |