CN201637830U - Online motor insulation monitor - Google Patents

Online motor insulation monitor Download PDF

Info

Publication number
CN201637830U
CN201637830U CN2010201675961U CN201020167596U CN201637830U CN 201637830 U CN201637830 U CN 201637830U CN 2010201675961 U CN2010201675961 U CN 2010201675961U CN 201020167596 U CN201020167596 U CN 201020167596U CN 201637830 U CN201637830 U CN 201637830U
Authority
CN
China
Prior art keywords
processing unit
unit
signal processing
connects
data processing
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 - Fee Related
Application number
CN2010201675961U
Other languages
Chinese (zh)
Inventor
国际平
张文瑞
吴明柱
王怀君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HARBIN GUOLI ELECTRIC CO Ltd
Original Assignee
HARBIN GUOLI ELECTRIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HARBIN GUOLI ELECTRIC CO Ltd filed Critical HARBIN GUOLI ELECTRIC CO Ltd
Priority to CN2010201675961U priority Critical patent/CN201637830U/en
Application granted granted Critical
Publication of CN201637830U publication Critical patent/CN201637830U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)

Abstract

An online motor insulation monitor comprises a zero-flux core-through sensor unit, a voltage signal conversion unit, a power supply unit, an analog signal processing unit, a data processing unit and a display unit, wherein the zero-flux core-through sensor unit is connected with the analog signal processing unit, a voltage signal measuring unit is connected with the analog signal processing unit, the analog signal processing unit is connected with the data processing unit, the data processing unit is connected with the display unit, the power supply unit is connected with the analog signal processing unit, the data processing unit and the display unit respectively, and the power supply unit is a linear power supply. The online motor insulation monitor can accurately and continuously monitor insulation conditions of motors during operation and provide reliable data reference for judging insulation conditions of the motors when the motors are in working conditions.

Description

Motor insulated on-line monitoring instrument
(1) technical field
The utility model relates to the motor technology field, is specifically related to a kind of motor insulated on-line monitoring instrument.
(2) background technology
First: at present, the preventive trial on equipment power failure basis is all adopted in the motor maintenance, before the maintenance to equipment whether defectiveness, hidden danger and other health status be short in understanding, the service work tool bears the character of much blindness and limitation.Increase frequency of power cut simultaneously, influenced the reliability of equipment operation; Second: traditional insulation detecting method, (1.5 times of rated voltages of inspection standard, overhaul more emat coil then are that 2 times of rated voltages+1000V), the DC break down voltage Leakage Current is tested to use corresponding megohmmeter and power frequency withstand test usually.Withstand voltage test all is that winding is increased big voltage in rated voltage, and whether the test winding can tolerate, thereby judges the state of insulation of winding, owing to use big voltage, it then is irreversible impacting if cause damage to winding insulation.When equipment is not deposited Insulation Problems, may cause damage to original good motor, cause the consumption of the costliness of human, financial, and material resources power, so the repair based on condition of component that current domestic insulation of Electric Motor detection mode is in foreseeability progressively replaces original preventative power failure prophylactic repair stage, therefore the motor insulated on-line monitoring is very important, and also is the inexorable trend of future development.
(3) summary of the invention
The purpose of this utility model is to provide a kind of motor insulated on-line monitoring equipment that is applied to.
The purpose of this utility model is achieved in that it comprises zero magnetic flux punching sensor unit, the voltage signal converting unit, power supply unit, analogy signal processing unit, data processing unit and display unit, zero magnetic flux punching sensor unit connects analogy signal processing unit, the voltage signal converting unit connects analogy signal processing unit, analogy signal processing unit connects data processing unit, data processing unit connects display unit, power supply unit connects zero magnetic flux punching sensor unit respectively, analogy signal processing unit, data processing unit and display unit, power supply unit are linear power supply.Described analogy signal processing unit comprises the 1st amplifying circuit, the 1st filtering circuit and the 1st output circuit, and the 1st amplifying circuit connects the 1st filtering circuit, and the 1st filtering circuit connects the 1st output circuit.Described zero magnetic flux punching sensor unit comprises zero magnetic flux punching sensor, the 2nd amplifying circuit, the 2nd filtering circuit and the 2nd output circuit, zero magnetic flux punching sensor connects the 2nd amplifying circuit, the 2nd amplifying circuit connects the 2nd filtering circuit, the 2nd filtering circuit connects the 2nd output circuit, and the 2nd output circuit connects the 1st amplifying circuit of analogy signal processing unit.Described data processing unit comprises signal gathering unit, signal processing unit and communication unit, and signal gathering unit is connected with signal processing unit, and signal processing unit is connected with communication unit, and signal gathering unit comprises a slice A/D conversion chip at least.Described display unit comprises display and keyboard composition, and display is connected with data processing unit respectively with keyboard.The phase measurement accuracy of described zero magnetic flux punching sensor is: ± 0.02 degree; Measurement range is: 100 μ A~700mA; Working temperature is :-35 ℃~+ 65 ℃.
This device connects communication bus by the communication unit of data processing unit to insulation of Electric Motor leakage current signal after amplification, filtering, collection, calculating, be uploaded to background computer.
This device is a kind of motor insulated on-line monitoring equipment, can be under the motor operating condition, accurately, the insulation status during operation of continuous monitoring motor, provide reliable data refer for judging the insulation of Electric Motor situation.
(4) description of drawings
Fig. 1 is the utility model motor insulated on-line monitoring instrument structure diagram, wherein 1, zero magnetic flux punching sensor unit, and 2, analogy signal processing unit, 3, data processing unit, 4, display unit, 5, power supply unit, 6, the voltage signal converting unit.
Fig. 2 is the utility model motor insulated on-line monitoring instrument voltage signal acquisition synoptic diagram;
Fig. 3 is the utility model motor insulated on-line monitoring instrument insulation signals collecting synoptic diagram;
Fig. 4 is the utility model motor insulated on-line monitoring instrument program flow diagram;
(5) embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Present embodiment is made of a motor insulated on-line monitoring instrument.Motor insulated on-line monitoring instrument is installed near the motor working condition measuring instrument.
1, near voltage signal acquisition: motor insulated on-line monitoring instrument is installed in the motor working condition measuring instrument, the secondary voltage signal that is used for the measuring voltage mutual inductor, the sample of signal mode of connection is as follows: press signal in the terminal box power taking, cause motor insulated on-line monitoring instrument voltage signal converting unit.
2, insulation signals collecting: the neutral point of threephase motor is opened, after three phase winding first and last ends penetrate zero magnetic flux punching sensor, again with the terminal closed neutral point that forms of three phase windings.
3, analogy signal processing unit amplifies, after filtering, measurement range selection etc. handle, signal is outputed to data processing unit zero magnetic flux punching sensor signal.
4,14 A/D samplings of data processing and display unit control, convert the electrical signal to digital signal, microprocessor adopts harmonic analysis method to analyze to digital signal sequences, by FFT signal is carried out frequency-domain analysis again, calculates signal effective value, phase place, dielectric dissipation factor at last; Through repeatedly measuring and digital filtering method calculates motor such as stable leakage current electric current, dielectric dissipation factor, insulation resistance and moves insulation parameter, show and be uploaded to background computer.
The utility model comprises zero magnetic flux punching sensor unit, voltage signal converting unit, power supply unit, analogy signal processing unit, data processing unit and display unit, zero magnetic flux punching sensor unit connects analogy signal processing unit, the voltage signal converting unit connects analogy signal processing unit, analogy signal processing unit connects data processing unit, data processing unit connects display unit, power supply unit connects zero magnetic flux punching sensor unit, analogy signal processing unit, data processing unit and display unit respectively, and power supply unit is a linear power supply.Described analogy signal processing unit comprises the 1st amplifying circuit, the 1st filtering circuit and the 1st output circuit, and the 1st amplifying circuit connects the 1st filtering circuit, and the 1st filtering circuit connects the 1st output circuit.Described zero magnetic flux punching sensor unit comprises zero magnetic flux punching sensor, the 2nd amplifying circuit, the 2nd filtering circuit and the 2nd output circuit, zero magnetic flux punching sensor connects the 2nd amplifying circuit, the 2nd amplifying circuit connects the 2nd filtering circuit, the 2nd filtering circuit connects the 2nd output circuit, and the 2nd output circuit connects the 1st amplifying circuit of analogy signal processing unit.Described data processing unit comprises signal gathering unit, signal processing unit and communication unit, and signal gathering unit is connected with signal processing unit, and signal processing unit is connected with communication unit, and signal gathering unit comprises a slice A/D conversion chip at least.Described display unit comprises display and keyboard composition, and display is connected with data processing unit respectively with keyboard.The phase measurement accuracy of described zero magnetic flux punching sensor is: ± 0.02 degree; Measurement range is: 100 μ A~700mA; Working temperature is :-35 ℃~+ 65 ℃.

Claims (6)

1. motor insulated on-line monitoring instrument, it comprises zero magnetic flux punching sensor unit, the voltage signal converting unit, power supply unit, analogy signal processing unit, data processing unit and display unit, it is characterized in that: zero magnetic flux punching sensor unit connects analogy signal processing unit, the voltage signal converting unit connects analogy signal processing unit, analogy signal processing unit connects data processing unit, data processing unit connects display unit, power supply unit connects zero magnetic flux punching sensor unit respectively, analogy signal processing unit, data processing unit and display unit, power supply unit are linear power supply.
2. a kind of motor insulated on-line monitoring instrument according to claim 1, it is characterized in that described analogy signal processing unit comprises the 1st amplifying circuit, the 1st filtering circuit and the 1st output circuit, the 1st amplifying circuit connects the 1st filtering circuit, and the 1st filtering circuit connects the 1st output circuit.
3. a kind of motor insulated on-line monitoring instrument according to claim 1, it is characterized in that described zero magnetic flux punching sensor unit comprises zero magnetic flux punching sensor, the 2nd amplifying circuit, the 2nd filtering circuit and the 2nd output circuit, zero magnetic flux punching sensor connects the 2nd amplifying circuit, the 2nd amplifying circuit connects the 2nd filtering circuit, the 2nd filtering circuit connects the 2nd output circuit, and the 2nd output circuit connects the 1st amplifying circuit of analogy signal processing unit.
4. a kind of motor insulated on-line monitoring instrument according to claim 1, it is characterized in that described data processing unit comprises signal gathering unit, signal processing unit and communication unit, signal gathering unit is connected with signal processing unit, signal processing unit is connected with communication unit, and signal gathering unit comprises a slice A/D conversion chip at least.
5. a kind of motor insulated on-line monitoring instrument according to claim 1 is characterized in that described display unit comprises display and keyboard composition, and display is connected with data processing unit respectively with keyboard.
6. a kind of motor insulated on-line monitoring instrument according to claim 3 is characterized in that the phase measurement accuracy of described zero magnetic flux punching sensor is: ± 0.02 degree; Measurement range is: 100 μ A~700mA; Working temperature is :-35 ℃~+ 65 ℃.
CN2010201675961U 2010-04-23 2010-04-23 Online motor insulation monitor Expired - Fee Related CN201637830U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201675961U CN201637830U (en) 2010-04-23 2010-04-23 Online motor insulation monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201675961U CN201637830U (en) 2010-04-23 2010-04-23 Online motor insulation monitor

Publications (1)

Publication Number Publication Date
CN201637830U true CN201637830U (en) 2010-11-17

Family

ID=43082334

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201675961U Expired - Fee Related CN201637830U (en) 2010-04-23 2010-04-23 Online motor insulation monitor

Country Status (1)

Country Link
CN (1) CN201637830U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680893A (en) * 2012-05-22 2012-09-19 李朝晖 Main insulation fault real-time online early warning device and method for generator
CN105717837A (en) * 2016-02-26 2016-06-29 王静爽 Motor shutdown on-line insulation monitoring control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102680893A (en) * 2012-05-22 2012-09-19 李朝晖 Main insulation fault real-time online early warning device and method for generator
CN105717837A (en) * 2016-02-26 2016-06-29 王静爽 Motor shutdown on-line insulation monitoring control method

Similar Documents

Publication Publication Date Title
CN201611384U (en) Motor status monitoring and failure diagnosis system
CN104407286A (en) Method for monitoring mechanical states of high-voltage isolating switches and emitting warning
CN101477158A (en) Recognition device and method for abnormal heating defect rank of electric power apparatus
CN104865549A (en) Reliability evaluation method and system of electric energy metering device
Abu-Elanien et al. Survey on the transformer condition monitoring
CN102590587A (en) Device and method for identifying short-circuit current of medium-voltage high-current direct current circuit breaker
CN110165778A (en) A kind of oil-immersed power transformer non-ionizing energy loss fault wave recording device and method
CN104251953A (en) Diagnosis method and device for loosening faults of on-load tap switch contact of power transformer
CN108226645A (en) A kind of vacuum circuit breaker divide-shut brake coil direct current resistance m easurem ent device
CN105093108A (en) Dynamic characteristic on-line monitoring system in motor starting process
CN101592711A (en) Three-phase motor stator electrical property comprehensive test instrument
CN101995313A (en) Vacuum degree on-line monitor of vacuum circuit breaker based on pulse discharge detection
CN211043532U (en) Transformer test system
CN102680862A (en) Device and method for online monitoring of partial discharge of shunt capacitor
CN203799008U (en) Pillar type electronic current transformer primary vibration test data acquisition device
CN102095765A (en) System for measuring content of micro water in transformer oil on line
CN207730890U (en) A kind of wind-driven generator dielectric loss and local discharge integrated detection device
CN201311463Y (en) Resistive current tester of high-current zinc oxide arrester
CN201637830U (en) Online motor insulation monitor
CN103033700B (en) Detecting device of responding wave form of dynamic reactive power compensation equipment and detecting method of the same
CN201622316U (en) Capacitive equipment current-leaking measuring device
CN106405403A (en) Cost control circuit breaker function test intelligent test device
RU112525U1 (en) AUTOMATED DIAGNOSTIC AND MONITORING SYSTEM OF POWER CABLE LINES INSULATION
Zhou et al. Defect diagnosis of disconnector based on wireless communication and support vector machine
CN107589330B (en) Live detection system and method for loss of power transformer

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Online motor insulation monitor

Effective date of registration: 20120817

Granted publication date: 20101117

Pledgee: Keli technology investment Company limited by guarantee in Heilongjiang Province

Pledgor: Harbin Guoli Electric Co., Ltd.

Registration number: 2012230000007

PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20130723

Granted publication date: 20101117

Pledgee: Keli technology investment Company limited by guarantee in Heilongjiang Province

Pledgor: Harbin Guoli Electric Co., Ltd.

Registration number: 2012230000007

PLDC Enforcement, change and cancellation of contracts on pledge of patent right or utility model
DD01 Delivery of document by public notice

Addressee: Sun Weihua

Document name: Notification to Pay the Fees

DD01 Delivery of document by public notice

Addressee: Harbin Guoli Electric Co., Ltd.

Document name: Notification of Termination of Patent Right

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101117

Termination date: 20140423