CN208432678U - A kind of device for measuring transformer transient signal - Google Patents
A kind of device for measuring transformer transient signal Download PDFInfo
- Publication number
- CN208432678U CN208432678U CN201820383487.XU CN201820383487U CN208432678U CN 208432678 U CN208432678 U CN 208432678U CN 201820383487 U CN201820383487 U CN 201820383487U CN 208432678 U CN208432678 U CN 208432678U
- Authority
- CN
- China
- Prior art keywords
- overvoltage
- signal
- transient
- measuring unit
- flow rate
- 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.)
- Active
Links
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model provides a kind of device for measuring transformer transient signal, and described device includes: sampling resistor, is installed on Transformer Bushing Tap ground line, for making the overvoltage signal by Transformer Bushing Tap be transformed to current signal；Transient overvoltage measuring unit, it is in parallel with sampling resistor, it flows through the current signal of resistance for acquiring and is converted into overvoltage signal；Transient state oil flow rate measuring unit is used to acquire the oil stream speed inside the oil pipe between transformer and conservator；Data transmission unit is used to the oil stream speed signal for overvoltage signal and transient state oil flow rate the measuring unit acquisition that transient overvoltage measuring unit acquires being transmitted to data processing unit；Data processing unit, it connect with data transmission unit, for receiving the overvoltage signal of transient overvoltage unit acquisition and the oil stream speed signal of transient state oil flow rate measuring unit acquisition, and monitor the waveform of overvoltage on-line, and oil stream speed signal is analyzed and calculated.
Description
Technical field
The utility model relates to power measurement technical fields, and temporary for measuring transformer more particularly, to one kind
The device of state signal.
Background technique
Transformer transient signal mainly includes transient overvoltage signal and transient state oil flow rate signal.Wherein, transient overvoltage
Be electric network fault and insulation occur defect the main reason for, and transformer body protection malfunction and cause transformer trip
Failure then makes electric system and transformer reliability operation is horizontal and power consumer power supply reliability is all affected；Simultaneously
Gaseous shield has high sensitivity and important work to reflection transformer winding turn-to-turn short circuit or built-in electrical insulation arc fault
With once malfunction must thoroughly investigate thoroughly reason of false action, can putting into operation after transformer body fault-free, increase a large amount of live works
Make, it is therefore necessary to take measures to prevent protection malfunction, and gas malfunction is therefore the real-time measurement since oil stream mutation causes
Transient overvoltage signal and transient state oil flow rate operate normally guarantee transformer significant.But lack in the prior art to its into
Row composite measurement analytical equipment.
Utility model content
In order to solve to lack existing for background technique the skill for the device for carrying out composite measurement analysis to transformer transient signal
Art problem, the utility model provide a kind of device for measuring transformer transient signal, and described device includes:
Sampling resistor is installed on Transformer Bushing Tap ground line, for making the mistake by Transformer Bushing Tap
Voltage signal is transformed to current signal；
Transient overvoltage measuring unit, it is in parallel with sampling resistor, for acquire flow through resistance current signal and by its
It exports after being converted to overvoltage signal to data processing unit；
Transient state oil flow rate measuring unit, the oil stream speed for being used to acquire inside the oil pipe between transformer and conservator and by institute
It states oil stream speed signal and is transmitted to data processing unit；
Data transmission unit, one end are connect with transient overvoltage measuring unit, transient state oil flow rate measuring unit, the other end
It is connect with data processing unit, overvoltage signal and transient state the oil flow rate measurement for being used to acquire transient overvoltage measuring unit
The oil stream speed signal of unit acquisition is transmitted to data processing unit；
Data processing unit is connect with data transmission unit, for receiving the overvoltage of transient overvoltage unit acquisition
The oil stream speed signal of signal and the acquisition of transient state oil flow rate measuring unit, and monitor the waveform of overvoltage on-line, and to oil stream
Speed signal is analyzed and is calculated.
Further, described device further includes anti-open-circuit-protection unit, in parallel with sampling resistor, for preventing circuit from opening
Road.
Further, the data transmission unit is local communication bus.
Further, it includes to Buchholz relay that the data processing unit, which carries out analysis with calculating to oil stream velocity information,
The situation of change for acting the oil stream speed of front and back is analyzed, and determines that Buchholz relay is suitable for the adjusting of the transformer
Value.
Further, the transient state oil flow rate measuring unit carries out the acquisition of oil stream speed using target type meter.
Further, the transient overvoltage measuring unit includes 3 Measurement channels, 3 phases of energy while measuring transformer
The transient overvoltage signal of bottom shielding of bushing.
Further, the voltage measurement range of the transient state oil flow rate measuring unit is 0 to 1000kV, and accuracy of measurement is
5%.
Further, the transient state oil flow rate measuring unit includes 1 Measurement channel, and oil flow rate measurement range is 0 to 3m/
S, oil flow rate measurement accuracy are 0.1m/s.
Further, the overvoltage signal of the transient overvoltage measuring unit acquisition includes Lightning Over-voltage signal and behaviour
Make overvoltage signal.
Further, multiple transient overvoltage measuring units and transient state oil flow rate measuring unit can be set in described device,
To measure the transient overvoltage signal and transient state oil stream speed signal of more transformers simultaneously.
It, can be between transformer and conservator by the device of measuring transformer transient signal provided by the utility model
Transient overvoltage caused by oil pipe inside oil flow rate and lightning surge and switching overvoltage is acquired, thus to transformer
Transient signal carries out Real time displaying, analysis and calculating, preferably ensure that the safety of operation of power networks, reduces site workload,
Improve the efficiency of operation of power networks.
Detailed description of the invention
By reference to the following drawings, the illustrative embodiments of the utility model can be more fully understood by:
Fig. 1 is the structure chart of the device of the measuring transformer transient signal of specific embodiment of the present invention.
Specific embodiment
The illustrative embodiments of the utility model are introduced referring now to the drawings, however, the utility model can use many
Different forms is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be in order at large and complete
Open the utility model entirely, and the scope of the utility model is sufficiently conveyed to person of ordinary skill in the field.For
The term in illustrative embodiments being illustrated in the accompanying drawings not is the restriction to the utility model.In the accompanying drawings, identical
Cells/elements use identical appended drawing reference.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is the structure chart of the device of the measuring transformer transient signal of specific embodiment of the present invention.Such as Fig. 1 institute
Show, the device 100 of measuring transformer transient signal described in the utility model includes:
Sampling resistor 101 is installed on Transformer Bushing Tap ground line, for making by Transformer Bushing Tap
Overvoltage signal is transformed to current signal；
Transient overvoltage measuring unit 102, it is in parallel with sampling resistor 101, for acquiring the current signal for flowing through resistance
And it exports after being converted into overvoltage signal to data processing unit 105；
Transient state oil flow rate measuring unit 103 is used to acquire oil stream speed inside the oil pipe between transformer and conservator simultaneously
The oil stream speed signal is transmitted to data processing unit 105；
Data transmission unit 104, one end and transient overvoltage measuring unit 102, transient state oil flow rate measuring unit 103 connect
It connects, the other end is connect with data processing unit 106, is used for the overvoltage signal for acquiring transient overvoltage measuring unit 102
The oil stream speed signal acquired with transient state oil flow rate measuring unit 103 is transmitted to data processing unit 105；
Data processing unit 105 is connect with data transmission unit 104, is acquired for receiving transient overvoltage unit 102
Overvoltage signal and the oil stream speed signal that acquires of transient state oil flow rate measuring unit 103, and monitor the waveform of overvoltage on-line,
And oil stream speed signal is analyzed and calculated.
Preferably, described device 100 further includes anti-open-circuit-protection unit 106, in parallel with sampling resistor 101, for preventing
Only open circuit.
Preferably, the data transmission unit 104 is local communication bus.
Preferably, it includes to gas relay that the data processing unit 105, which carries out analysis with calculating to oil stream velocity information,
The situation of change of the oil stream speed of device movement front and back is analyzed, and determines that Buchholz relay is suitable for the adjusting of the transformer
Value.
Preferably, the transient state oil flow rate measuring unit 103 carries out the acquisition of oil stream speed using target type meter.
Preferably, the transient overvoltage measuring unit 102 includes 3 Measurement channels, 3 phases of energy while measuring transformer
The transient overvoltage signal of bottom shielding of bushing.
Preferably, the voltage measurement range of the transient state oil flow rate measuring unit 103 is 0 to 1000kV, accuracy of measurement
It is 5%.
Preferably, the transient state oil flow rate measuring unit 103 include 1 Measurement channel, oil flow rate measurement range be 0 to
3m/s, oil flow rate measurement accuracy are 0.1m/s.
Preferably, the overvoltage signal that the transient overvoltage measuring unit 102 acquires include Lightning Over-voltage signal and
Switching overvoltage signal.
Preferably, multiple transient overvoltage measuring units 102 can be set in described device 100 and the measurement of transient state oil flow rate is single
Member 103, to measure the transient overvoltage signal and transient state oil stream speed signal of more transformers simultaneously.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (10)
1. a kind of device for measuring transformer transient signal, which is characterized in that described device includes:
Sampling resistor is installed on Transformer Bushing Tap ground line, for making the overvoltage by Transformer Bushing Tap
Signal is transformed to current signal；
Transient overvoltage measuring unit, it is in parallel with sampling resistor, it flows through the current signal of resistance for acquiring and is converted
For output after overvoltage signal to data processing unit；
Transient state oil flow rate measuring unit, the oil stream speed for being used to acquire inside the oil pipe between transformer and conservator and by the oil
Stream speed signal is transmitted to data processing unit；
Data transmission unit, one end are connect with transient overvoltage measuring unit, transient state oil flow rate measuring unit, the other end and number
It is connected according to processing unit, the overvoltage signal and transient state oil flow rate measuring unit for being used to acquire transient overvoltage measuring unit
The oil stream speed signal of acquisition is transmitted to data processing unit；
Data processing unit is connect with data transmission unit, for receiving the overvoltage signal of transient overvoltage unit acquisition
The oil stream speed signal acquired with transient state oil flow rate measuring unit, and monitor the waveform of overvoltage on-line, and to oil stream speed
Signal is analyzed and is calculated.
2. the apparatus according to claim 1, which is characterized in that described device further includes anti-open-circuit-protection unit, and is adopted
Sample resistor coupled in parallel, for preventing open circuit.
3. the apparatus according to claim 1, which is characterized in that the data transmission unit is local communication bus.
4. the apparatus according to claim 1, which is characterized in that the data processing unit divides oil stream velocity information
Analysing and calculating includes analyzing the situation of change of the oil stream speed of Buchholz relay movement front and back, and determine Buchholz relay
It is suitable for the setting valve of the transformer.
5. the apparatus according to claim 1, which is characterized in that the transient state oil flow rate measuring unit uses target type meter
Carry out the acquisition of oil stream speed.
6. the apparatus according to claim 1, which is characterized in that the transient overvoltage measuring unit includes that 3 measurements are logical
Road, the transient overvoltage signal of energy while 3 phase bottom shielding of bushing of measuring transformer.
7. the apparatus according to claim 1, which is characterized in that the voltage measurement range of the transient state oil flow rate measuring unit
It is 0 to 1000kV, accuracy of measurement 5%.
8. the apparatus according to claim 1, which is characterized in that the transient state oil flow rate measuring unit includes that 1 measurement is logical
Road, oil flow rate measurement range are 0 to 3m/s, and oil flow rate measurement accuracy is 0.1m/s.
9. the apparatus according to claim 1, which is characterized in that the overvoltage letter of the transient overvoltage measuring unit acquisition
Number include Lightning Over-voltage signal and switching overvoltage signal.
10. the apparatus according to claim 1, which is characterized in that multiple transient overvoltage measurements can be arranged in described device
Unit and transient state oil flow rate measuring unit, to measure the transient overvoltage signal and transient state oil stream speed letter of more transformers simultaneously
Number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820383487.XU CN208432678U (en) | 2018-03-21 | 2018-03-21 | A kind of device for measuring transformer transient signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820383487.XU CN208432678U (en) | 2018-03-21 | 2018-03-21 | A kind of device for measuring transformer transient signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208432678U true CN208432678U (en) | 2019-01-25 |
Family
ID=65104289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820383487.XU Active CN208432678U (en) | 2018-03-21 | 2018-03-21 | A kind of device for measuring transformer transient signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208432678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231523A (en) * | 2019-05-07 | 2019-09-13 | 西安交通大学 | A kind of oil-immersed power transformer protection fault wave recording device and method |
-
2018
- 2018-03-21 CN CN201820383487.XU patent/CN208432678U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231523A (en) * | 2019-05-07 | 2019-09-13 | 西安交通大学 | A kind of oil-immersed power transformer protection fault wave recording device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104569481B (en) | Buchholz relay oil stream flow velocity acquisition system and grave gas setting valve method of calibration | |
| CN105242176B (en) | A kind of low current neutral grounding system fault localization method for being suitable for monitoring branched line | |
| CN104730410A (en) | Distribution line breakage monitoring method and device based on voltage and current vectors | |
| CN104898052B (en) | The check system and method for switch mechanical characteristic testing device based on IEC61850 | |
| CN201311488Y (en) | Check meter of arrester leakage current and action recorder | |
| CN104569751B (en) | Device and method for detecting insulation performance of high-voltage auxiliary electrical appliance wire harness of electric automobile | |
| CN104698311B (en) | A kind of DC line direct current arrester live detection method | |
| CN101762799A (en) | Method and system for online detection of voltage transformer precision | |
| CN102331544B (en) | Method for distinguishing high resistance grounding failure and metallic grounding failure of power transmission line | |
| CN107525996B (en) | Online monitoring method and system for leakage current of voltage limiter of series compensation device | |
| CN102721891A (en) | Test device for non-liner resistor type resonance eliminator | |
| CN103840438A (en) | Intelligent detecting system for detecting single phase grounding protection function of intelligent switch device based on 10kV neutral non-grounding distribution network system | |
| CN102411124A (en) | Mechanical property test device for special breaker | |
| CN208432678U (en) | A kind of device for measuring transformer transient signal | |
| CN209624681U (en) | Intelligent electric energy meter | |
| Ananthan et al. | Model-based approach integrated with fault circuit indicators for fault location in distribution systems | |
| CN203164360U (en) | Transformer device insulation online monitoring system | |
| CN203422419U (en) | Electrified tester for zinc oxide lightning arrester | |
| CN205581288U (en) | High accuracy direct current electric energy meter | |
| CN205067693U (en) | High -voltage switch machinery and electrical characteristics detector | |
| CN105486930B (en) | With silicon chain direct current system bus to the detection device and method of ground resistance | |
| CN104215862A (en) | Arrester and state discriminated method of online monitoring meter thereof | |
| CN207689556U (en) | A kind of series compensation device voltage limiter On-line Monitoring of Leakage Current system | |
| CN102879481A (en) | Centralized online monitoring of high oil resistant color spectrum | |
| CN203178422U (en) | Partial discharge measuring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |