CN201178300Y - Integrated control protection cabinet for motor - Google Patents
Integrated control protection cabinet for motor Download PDFInfo
- Publication number
- CN201178300Y CN201178300Y CNU2008200318245U CN200820031824U CN201178300Y CN 201178300 Y CN201178300 Y CN 201178300Y CN U2008200318245 U CNU2008200318245 U CN U2008200318245U CN 200820031824 U CN200820031824 U CN 200820031824U CN 201178300 Y CN201178300 Y CN 201178300Y
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- motor
- circuit
- drive circuit
- microcomputer
- communication module
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Abstract
The utility model provides a motor comprehensive control protective cabinet, and belongs to the field of the electric power protective equipment. The motor comprehensive control protective cabinet comprises a microcomputer protective unit, a motor drive circuit, a current collecting circuit, a voltage collecting circuit and a grounding screw on the cabinet body. The output end of the microcomputer protective unit is connected to the control terminal of the motor drive circuit, the input terminal of the motor drive circuit is connected to an alternating current power supply, and the output terminal of the motor drive circuit is connected to a controlled motor. The output terminals of the current collecting circuit and the voltage collecting circuit are connected to the corresponding collecting terminal of the microcomputer protective unit. The parts and the grounding terminals of the circuit are connected to the ground via a grounding screw. The microcomputer protective unit is also connected to a communication module. The motor comprehensive control protective cabinet realizes remote control, remote measurement, remote regulation, and remote signaling in a real sense.
Description
Technical field
The utility model relates to electrical protection apparatus, relates in particular to a kind of Comprehensive Control protection cabinet of motor.
Background technology
Along with improving constantly of the development and national economy and the people's material and cultural life level, people are more and more higher to the attention degree of motor apparatus, and the thing followed is that people are also more and more higher to the requirement of the property safe and reliable to operation of motor apparatus.Therefore, Motor Control is as a most important ring in the motor safe operation link, and people also increase its requirement thereupon.Along with people are more and more higher to the requirement of motor apparatus operational reliability, the protective device of motor is also updating, and develops towards intelligent direction.Realize the intellectuality of motor protection, key will be used highly reliable Microcomputer Protection unit and communication module.Existing motor protecting device mostly adopts contactor to realize, it can not realize the accurate controllability of start-up time, and protective device mostly adopts traditional relay to realize protection.Because traditional protection control cubicle does not have the communication transfer function; when break down in the scene; it can not realize the wireless transmission of fault message; the operations staff is also with regard to the ruuning situation of there is no telling field apparatus; especially in remote area, because traffic, motor is separated by all distant; will waste great amount of manpower like this, and fault is not easy also and will soon be known by the operations staff.In many novel motor protecting devices, mostly adopted the radio station transmission, transmission range is limited, and cost is also very high, and it needs sending station and receives the radio station, and assembling, to use be not aspect very.In existing control device of electric motor, extensively adopted main controller, analog input module, digital quantity input module etc., mostly be discrete device, poor anti jamming capability connects also very complicated.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, designs a kind of novel motor comprehensive protection cabinet, thereby makes the operation that electronic device can be safe and reliable, and concrete technical scheme is as follows:
A kind of general motor control protection cabinet comprises the grounding screw rod on Microcomputer Protection unit, motor-drive circuit, current acquisition circuit, voltage collection circuit and the cabinet; The output of Microcomputer Protection unit connects the control end of motor-drive circuit, and the input of motor-drive circuit connects AC power, and the output of motor-drive circuit connects controlled motor; The output of current acquisition circuit and voltage collection circuit is connected the corresponding collection terminal in Microcomputer Protection unit; The earth terminal of described parts and circuit is connected the earth by grounding screw rod.Described Microcomputer Protection unit also is connected with communication module, and power supply connects Microcomputer Protection unit and communication module, is its power supply.Described communication module is the GPRS wireless communication module, and described Microcomputer Protection unit is the PA100+-M type, and they pass through serial interface communication.
Compared with prior art, the beneficial effects of the utility model comprise:
1, owing to adopt Microcomputer Protection unit and GPRS wireless communication module, when motor occurs when unusual, accurately the failure judgement type realizes action message, and will protect information accurately to send on the mobile phone by the GPRS wireless network, the real-time of realization information; When motor needs start and stop, can be by the wireless network of GPRS, realize start stop operation by background monitoring software, real time execution parameter that can the remote monitoring motor, the setting parameter of remotely modifying system, long-range communication function has been realized remote control truly, remote measurement, remote regulating, remote signalling " four is distant " function.
2, owing to adopt the Microcomputer Protection unit, when motor start-up, utilize the Microcomputer Protection unit can realize the free adjustment control starting time, adopt single-chip microcomputer regularly because protected location is inner, so traditional relay time of its time ratio is accurate, and can realize the accurate control of start-up time; Normally in service at motor can be realized the monitoring to the motor parameters, realizes multinomial defencive function.The defencive function that can realize has I segment protect, standard inverse time lag, low-voltage, overvoltage, zero-sequence current, negative-sequence current, motor rotation blockage, motor overheating, dry tap protection (undercurrent or low power factor), low overvoltage and dry tap protection action self-starting, self-starting at regular time and quantity starts, sends a telegram here; The parameter that can monitor has parameters such as electric current, voltage, active power, reactive power, power factor, frequency, calculating zero-sequence current, calculating electric degree etc.
Along with improving of Microcomputer Protection monotechnics and product, the attainable function of the utility model will be more.
Description of drawings
Fig. 1 is a theory diagram of the present utility model
Fig. 2 is design principle figure of the present utility model
Fig. 3 is control principle figure of the present utility model
Fig. 4 is a structural representation of the present utility model
TAa, TAb, TAc are current transformers; ZOB is an autotransformer; D1, D2, D3 are binding posts; KK1, KK2 are air switches; WM is the GPRS wireless communication module; KA1, KA2 are auxiliary relays; HA is a switch knob; TA is a trip button; 1KM, 2KM, 3KM are contactors; YXD is a run indicator; QDD starts indicator light; DJD is a standby indicating lamp; ZOB is an autotransformer
10-3 current transformer 11-3 contactor 12-major loop binding post of 1-PA100+ Microcomputer Protection unit 3-terminal board 4-air switch 5-auxiliary relay 6-socket 7-metallic channel 8-circuit breaker 9-GPRS communication module 13-autotransformer 14-wire inlet-outlet 16-grounding screw rod 17-button 18-indicator light among Fig. 4
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described further.
A kind of general motor control protection cabinet comprises the grounding screw rod on Microcomputer Protection unit, motor-drive circuit, current acquisition circuit, voltage collection circuit and the cabinet; The output of Microcomputer Protection unit connects the control end of motor-drive circuit, and the input of motor-drive circuit connects AC power, and the output of motor-drive circuit connects controlled motor; The output of current acquisition circuit and voltage collection circuit is connected the corresponding collection terminal in Microcomputer Protection unit; The earth terminal of described parts and circuit is connected the earth by grounding screw rod.Described Microcomputer Protection unit also is connected with communication module.Described communication module is the GPRS wireless communication module, and described Microcomputer Protection unit is the PA100+-M type, and they all are provided with the RS232/485 port, each other by this serial interface communication.
In the present embodiment, the motor comprehensive protection cabinet also comprises air switch 4, auxiliary relay 5, socket 6, major loop binding post 12, button 17 and indicator light 18.
Motor-drive circuit comprises autotransformer 13, circuit breaker 8, contactor 11 and auxiliary contact thereof, because described device is device commonly used in the prior art, is not further limited at this.One phase AC220V is connected to socket, and socket is connected to GPRS wireless communication module 9 by plug.Also have a phase AC220V to be connected to air switch 4.The three-phase of one road AC380V power supply connects 3 ends of incoming cables of circuit breaker 8 respectively, and 3 leading-out terminals of circuit breaker 8 are connected to 3 ends of incoming cables of contactor 1KM and contactor 2KM; 3 leading-out terminals of contactor 1KM connect 3 ends of incoming cables of motor respectively; 3 leading-out terminals of contactor 2KM connect the primary side of autotransformer 13 respectively; The secondary side of autotransformer 13 connects 3 leading-out terminals of contactor 1KM respectively; 3 ends of incoming cables of contactor 3KM connect the common port of autotransformer 13 respectively, and 3 leading-out terminals of contactor 3KM link together; Be in series with YXD run indicator, DJD standby indicating lamp, QDD in contactor 1KM, 2KM, the 3KM loop respectively and start indicator light.The respective terminal of Microcomputer Protection unit PA100+-M control loop connects contactor 1KM, 2KM, 3KM control coil; The corresponding collection terminal in Microcomputer Protection cell signal loop connects the auxiliary contact of contactor 1KM, 2KM, 3KM; Air switch 4 connects the power end of PA100+-M to PA100+-M and GPRS wireless communication module.
With reference to figure 4, present embodiment is used Microcomputer Protection unit PA100+-M1, autotransformer 13, GPRS communication module 9, is a kind of novel system controlled by computer protective device that integrates control and defencive function.PA100+-M 1 is applicable to and exchanges 50Hz or 60Hz, voltage is 380V or 660V, power is the usefulness that the three-phase squirrel-cage induction motor of 11～300kW is made reduced-voltage starting, overload to motor, overheated, stall, dry tap, under-voltage, overvoltage, underpower, the harm that fault such as ground connection or electric leakage causes is protected, and real-time measurement arranged, power electric degree statistics, startup-shutdown management at regular time and quantity, autodiagnosis, the GPRS transfer of data, failure wave-recording, functions such as logout can realize the high-acruracy survey electric current, voltage, active power, reactive power, power factor, frequency, calculate zero-sequence current, calculate electric degree; The input of two-way pulsed quantity realizes external electric kilsyth basalt automatic data logging.
GPRS communication module 9 is powerful; information is to transmit by the GPRS net; saved traditional cable communication mode; when motor breaks down; it can send to the information of fault on the background monitoring system; the fault message that module can be transmitted has the action of I section current protection; the inverse time protection action; the under-voltage protection action; the overvoltage protection action; the zero-sequence current protection action; negative-sequence current protection action; the rotation-clogging protection action; the overtemperature protection action; dry tap protection action; the protection self-starting; regularly start; regularly stop; quantitatively start; quantitatively stop; protections such as incoming call self-starting can also show by realization event in proper order; real-time waveform demonstration and failure wave-recording are powerful.And device can also be sent to the real time information of motor on the monitoring software of background system, operations staff's tour worries have been saved, and when fault takes place, require the staff to go the on-the-spot fault of confirming, if the staff does not go on-the-spot affirmation, system can report to the police once every a period of time, till going affirmation.By the GPRS communication, can conveniently realize long-range parameter monitoring and operating function, can realize not spending the scene, just can realize the start stop operation of motor.
Once part is to adopt contactor serial connection autotransformer to realize the Blood pressure decresing belt electric motor starting, and motor cuts out autotransformer after reaching certain rotating speed, drives the operation of motor total head; Control section is to cooperate PA100+-M type computer integrated protection measure and control device as the protection control unit by relay, contactor and auxiliary contact thereof, finishes function operations such as every start and stop and protection.
With reference to figure 3, during startup, to press switch knob HA or press PA150 device switch knob, A.C. contactor 3KM coil gets electric, 3KM main contact closure.3KM often opens the auxiliary contact closure, and A.C. contactor 2KM coil gets electric, 2KM main contact closure, and autotransformer ZOB seals in the motor reduced-voltage starting.The X3-12 of PA100+-M, X3-15 contact are through the delay time of adjusting (time is adjustable by device) closure, and the KA2 coil is charged, disconnects 3KM by its auxiliary contact, A.C. contactor 1KM coil gets electric, 1KM main contact closure, 2KM coil losing electricity, autotransformer withdraws from, the operation of motor total head.
When fault takes place, the X3-18 of PA100+, the X3-19 closing of contact, auxiliary relay KA1 coil is charged, and the KA1 normally-closed contact disconnects, the control loop outage, main noddle on contactor all disconnects, and shuts down.
In addition, motor protection control cubicle of the present utility model also has multiple functions such as protection, measurement, control, monitoring, communication, failure wave-recording, logout in one.High-acruracy survey electric current, voltage, power, power factor, frequency, zero-sequence current, residual voltage, calculating electric degree; The online record volume of event reaches 64, and first in first out (FIFO) dynamic refresh has time mark, and power down is not lost.Realized the integrated protection of motor, safety, reliable.
Claims (4)
1, a kind of general motor control protection cabinet comprises the grounding screw rod on Microcomputer Protection unit, motor-drive circuit, current acquisition circuit, voltage collection circuit and the cabinet; The output of Microcomputer Protection unit connects the control end of motor-drive circuit, and the input of motor-drive circuit connects AC power, and the output of motor-drive circuit connects controlled motor; The output of current acquisition circuit and voltage collection circuit is connected the corresponding collection terminal in Microcomputer Protection unit; The earth terminal of described parts and circuit is connected the earth by grounding screw rod, it is characterized in that described Microcomputer Protection unit also is connected with communication module, and power supply connects Microcomputer Protection unit and communication module, is its power supply.
2, a kind of general motor control protection cabinet according to claim 1 is characterized in that described communication module is the GPRS wireless communication module.
3, a kind of general motor control protection cabinet according to claim 1 and 2 is characterized in that described Microcomputer Protection unit is the PA100+-M type.
4, a kind of general motor control protection cabinet according to claim 3 is characterized in that described GPRS wireless communication module and PA100+-M type Microcomputer Protection unit pass through serial interface communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200318245U CN201178300Y (en) | 2008-02-04 | 2008-02-04 | Integrated control protection cabinet for motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200318245U CN201178300Y (en) | 2008-02-04 | 2008-02-04 | Integrated control protection cabinet for motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201178300Y true CN201178300Y (en) | 2009-01-07 |
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ID=40218322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200318245U Expired - Fee Related CN201178300Y (en) | 2008-02-04 | 2008-02-04 | Integrated control protection cabinet for motor |
Country Status (1)
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| CN (1) | CN201178300Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226705A (en) * | 2011-04-01 | 2011-10-26 | 四川省绵阳西南自动化研究所 | Moving measurement apparatus based on linear module |
| CN102842949A (en) * | 2011-06-22 | 2012-12-26 | 北京市电力公司 | System and method for selected tripping control of loop closing protection |
| CN105958444A (en) * | 2016-06-14 | 2016-09-21 | 溧水县得瑞微型电机厂 | Circuit protection motor |
| CN110011475A (en) * | 2019-04-08 | 2019-07-12 | 浙江格瑶科技股份有限公司 | A kind of motor protecting device |
| CN110266006A (en) * | 2019-07-10 | 2019-09-20 | 广东利元亨智能装备股份有限公司 | A kind of power control circuit |
-
2008
- 2008-02-04 CN CNU2008200318245U patent/CN201178300Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226705A (en) * | 2011-04-01 | 2011-10-26 | 四川省绵阳西南自动化研究所 | Moving measurement apparatus based on linear module |
| CN102842949A (en) * | 2011-06-22 | 2012-12-26 | 北京市电力公司 | System and method for selected tripping control of loop closing protection |
| CN102842949B (en) * | 2011-06-22 | 2015-06-10 | 国家电网公司 | System and method for selected tripping control of loop closing protection |
| CN105958444A (en) * | 2016-06-14 | 2016-09-21 | 溧水县得瑞微型电机厂 | Circuit protection motor |
| CN110011475A (en) * | 2019-04-08 | 2019-07-12 | 浙江格瑶科技股份有限公司 | A kind of motor protecting device |
| CN110266006A (en) * | 2019-07-10 | 2019-09-20 | 广东利元亨智能装备股份有限公司 | A kind of power control circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20120204 |