CN207663042U - 1000kV AC extra high voltage current transformer errors verify mobile platform - Google Patents
1000kV AC extra high voltage current transformer errors verify mobile platform Download PDFInfo
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- CN207663042U CN207663042U CN201721380555.9U CN201721380555U CN207663042U CN 207663042 U CN207663042 U CN 207663042U CN 201721380555 U CN201721380555 U CN 201721380555U CN 207663042 U CN207663042 U CN 207663042U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 11
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- 238000012795 verification Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 13
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Abstract
The utility model provides a kind of 1000kV AC extra high voltages current transformer error verification mobile platform, including：Babinet and setting and check system, monitoring system, display device, input unit, sensing system and the processor in babinet, the check system, monitoring system, display device, input unit, sensing system are connected to the processor respectively, and door and window are offered on the babinet.The site error of ultra-high voltage transformer station current transformer can accurately be examined and determine.
Description
Technical field
The utility model is related to calibrating installation technical fields, specifically, being that a kind of 1000kV AC extra high voltages electric current is mutual
Sensor error checking mobile platform.
Background technology
With the development of extra-high voltage grid, in order to economize the land resource, ensure that power grid is strong reliable, have safety and stability,
The GIS for the advantages that integrated level is high, floor space is small（Gas insulated substation, gas-insulating and fully-enclosed combination electricity
Device）It is widely applied in ultra-high voltage transformer station construction.Current transformer is electrical energy measurement important composition portion in extra-high voltage GIS
Point, accuracy plays an important role for the trade settlement of power supplying and generating enterprises, it is therefore desirable to according to《JJG1021-2007 electric power
Mutual inductor》Vertification regulation requires to carry out ultra-high voltage transformer station current mutual inductor on site error testing.Extra-high voltage GIS current transformer
Have the characteristics that no-load voltage ratio is big, pipeline loop is long, integrated level is high, totally-enclosed property, it cannot be current transformer independence when on-site proving
Out, it needs to take very long pipeline bus and some electrical equipments, test loop impedance is big, such as East Lanzhou ultra-high voltage transformer station
Middle GIS current transformers test loop is up to 390 meters, in this way the extra-high voltage GIS Current Mutual Inductance for large velocity ratio, primary circuit length
The experiment power supply and up-flow place capacity needed when device on-site proving is huge, such as to a 4000A/1A in 200 meters of circuits GIS
Extra-high voltage current transformer, it is 800kVA or so that power supply capacity is needed under 120% rated current, and wherein active component is about
200kVA or so, reactive component are about 750kVA or so.If using the scheme of traditional current lifting device, the electricity of 800kVA or so is needed
Source capacity and current lifting device capacity are also difficult to meet calibrating requirement by the capacity increase of traditional current lifting device and field test power supply,
And the current lifting device volume of large capacity is big, weight weight, and execute-in-place difficulty is very big.
Currently, indirect test method is generally used in ultra-high voltage transformer station current mutual inductor field detecting both at home and abroad：
First, low current extrapolation, i.e., mutual come simulated current by the method for increasing current transformer load in the case of low current
Operating magnetic field flux under sensor high current, then emulation reckoning is carried out to error with the mode that load is extrapolated；Second is that small voltage method measures
Calculating method applies small voltage in Current Transformer Secondary, its parameter is measured, according to the mathematical model and error of current transformer
Expression formula, the error of calculating current mutual inductor.Both indirect test methods have been evaded to current lifting device, pressure regulator and field power supply
The excessive problem of capacity requirement, makes the equipment volume entrained by field test be substantially reduced, weight saving, but indirect test side
Method cannot meet JJG1021-2007《Electric power mutual-inductor》The regulation of vertification regulation cannot obtain the electric current in the case of high current
Mutual inductor true error reduces the reliability and authenticity of test data.It is united according to extra-high voltage current mutual inductor field detecting
Meter is as a result, current transformer is more in the overproof situation of upper limit error, especially near rated current range, with experiment electricity
The reason of increase of stream, error increases, causes this phenomenon may be current mutual inductor coil material in installation, transportational process
It is given a shock, iron core relative permeability is caused to decline, magnetic circuit saturation causes error change dramatically near rated current, so small
Electric current extrapolation cannot find this phenomenon, cause calibrating data not true and reliable；It is also deposited using small voltage meter algorithm
In problems, although first, the principle of current transformer is similar, for same type Current Mutual Inductance to be examined and determine
Device, the more difficult determination of equivalent degree between ideal mathematical model and actual current transformer, although simulation can be passed through
Emulation is verified with a large amount of experiment to compare, but workload is undoubtedly huge；Second, even if obtaining a type of
The mathematical model of current transformer, but for each current transformer manufacturer employed in product design, production process
Core material, winding mode, mounting means, compensation way it is all different, want that establishing unified mathematical model is difficult to realize,
The measurement result obtained with this mathematical model is often difficult to reflect true error information, mutual especially for balanced electric current
Sensor has no idea to measure its error；Third, to obtain accurate mathematical model, it is mutual just must accurately to measure electric current
The electric parameter of sensor, for small voltage method, the voltage and current measured is extremely small, and it is relatively more tired accurately to measure electric parameter
Difficulty, and when progress current mutual inductor field detecting, often there is stronger interference in scene, measure under such conditions, just more
It is difficult to measure accurate electric parameter, also therefore, it is difficult to obtain accurate mathematical model, so using small voltage method survey calculation
The error information that method obtains is difficult to reflect the true error information of current transformer.Above two indirect method not only cannot be effective
Mutual inductor is examined and determine, but also may judge by accident, so according to JJG1021-2007《Electric power mutual-inductor》Vertification regulation
It is required that the error in each extra-high voltage current transformer of measurement point on-site proving is particularly important.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of 1000kV AC extra high voltages current transformer error schools
Mobile platform is tested, the site error of ultra-high voltage transformer station current transformer can be accurately examined and determine.
In order to solve the above technical problems, the utility model provides a kind of 1000kV AC extra high voltages current transformer error
Mobile platform is verified, including：Babinet and setting with babinet in check system, monitoring system, display device, input unit,
Sensing system and processor, the check system, monitoring system, display device, input unit, sensing system respectively with institute
Processor connection is stated, door and window are offered on the babinet, wherein in the check system, power supply connects the first pressure regulator one
Secondary side, the secondary side of first pressure regulator and the primary side of current lifting device connect, and compensation capacitor is parallel to the current lifting device
Primary side, the secondary side of the current lifting device are connect with a major loop, and the one of standard current transformer and current transformer to be measured
Secondary winding is serially connected in a major loop, and the secondary winding one of standard current transformer terminates the To of mutual-inductor tester
Binding post, the K binding posts of another termination mutual-inductor tester, secondary winding one end of current transformer to be measured by Burden box with
The Tx binding posts of the mutual-inductor tester connect, and the other end is connect with the K binding posts of the mutual-inductor tester.
Further, further include the second pressure regulator in the check system, primary side passes through the first on-off switch and institute
State power supply connection, the primary side connection of secondary side and isolating transformer, the secondary side of the isolating transformer and described first
The secondary side of pressure regulator is connected, and is connected to the primary side of the current lifting device.
Further, the compensation capacitor is multiple, in parallel between each other, each described compensation capacitor series connection
There are one the second on-off switches.
Further, the power supply is double pressure regulation electrician's power supplys.
Further, one circle of standard current transformer primary side punching.
Further, the sensing system includes temperature sensor and humidity sensor, the temperature sensor and institute
It states humidity sensor and acquires temperature and humidity in the babinet, and by the processor, result is shown in the display
On device.
Further, the monitoring system includes：It is set to outdoor type high-definition camera above the box inside, one
A experiment alarm caution bell and four warning lamps.
Further, further include safety and comfortable configuration comprising：Field lighting lamp, fire extinguisher, top formula air conditioner,
Office chair, computer and printer.
1000kV AC extra high voltages current transformer error provided by the utility model verifies mobile platform, using box work
Equipment is reasonably arranged in operating room by the mode for making room, and entire operating room is built using high strength steel proximate matter, panel and platform
Face is handled using fire prevention, the design of passageway and three-side door-opening, convenient for discrepancy and the Maintenance and Repair of post facility, place monitoring camera
Head and window, facilitate observation experimental enviroment.Platform can automatic measurement electric current primary circuit parameter, calculate experiment up-flow needed for nothing
Work(compensating electric capacity amount, reactive-load compensation capacitor group and automatic switching reactive compensation capacitor needed for Auto-matching；In rising test mistake
Cheng Zhong is measured and counter circuit primary parameter, the current compensation situation of in due course tracking system and automatic switching the optimal compensation in due course
Amount ensures that system is in the optimal compensation state, reaches fining compensation.
Description of the drawings
Fig. 1 is the schematic diagram of check system in the utility model error checking mobile platform embodiment one；
Fig. 2 is the schematic diagram of check system in the utility model error checking mobile platform embodiment two.
Specific implementation mode
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is not as the restriction to the utility model.
A kind of 1000kV AC extra high voltages current transformer error verification mobile platform, including：Babinet and setting and case
Internal check system, monitoring system, display device, input unit, sensing system and processor, the check system, prison
Control system, display device, input unit, sensing system are connected to the processor respectively, offered on the babinet door and
Window.
The babinet is built using high strength steel proximate matter, fire prevention processing, the design of passageway and three-side door-opening, convenient for come in and go out and
The Maintenance and Repair of post facility, window facilitate observation experimental enviroment.
The sensing system includes temperature sensor and humidity sensor, the temperature sensor and the humidity sensor
Device acquires the temperature and humidity in the babinet, and by the processor, result is shown in the display device.
The monitoring system includes：Outdoor type high-definition camera, the experiment report being set to above the box inside
Alert caution bell and four warning lamps.Using the display device real-time display test platform and surrounding enviroment, abnormal conditions occur
When can pass through alarm caution bell and warning lamp of experiment and remind.
Further include safety and comfortable configuration comprising：Field lighting lamp, fire extinguisher, top formula air conditioner, office chair, electricity
Brain and printer.
As shown in Figure 1, in the check system circuit, power supply connects pressure regulator primary side, the secondary side and liter of pressure regulator
The primary side connection of device is flowed, major loop of secondary side and experiment for current lifting device is connect；Standard current transformer and electric current to be measured
The first winding of mutual inductor is serially connected in major loop of the experiment；The secondary winding one of standard current transformer terminates mutually
The To binding posts of sensor tester, the K binding posts of another termination mutual-inductor tester；The secondary winding one of current transformer to be measured
End is connect by Burden box with the Tx binding posts of the mutual-inductor tester, the K wiring of the other end and the mutual-inductor tester
Column connects.
Wherein, the power supply, the power supply are double pressure regulation electrician's power supplys, and wave distortion is small, and fineness adjustment is small, can realize small
The precise positioning of current measurement point；The current lifting device reduces the leakage of current lifting device using multiply Primary Conductor uniform winding technology
It is anti-, realize the Miniaturization Design of current lifting device；One circle of standard current transformer primary side punching is fixed with current lifting device and is connected
It connects, in the different no-load voltage ratios of measurement current transformer to be measured, without changing standard current transformer primary connection.
Input unit can carry out buck control, trystate selection and test parameters selection etc..
Display device can show a variety of parameters in current transformer error measurement process, as electric current primary circuit hinders
It is anti-, current loop primary current percentage, current loop actual current, primary circuit power factor, reactive-load compensation state, idle
The information such as compensation rate, moreover it is possible to show current transformer error measurement data.
The present embodiment, can be to carrying out up-flow control, can be with automatic measurement current testing primary circuit parameter, automatic calculating
The reactive compensation capacitor combination needed for reactive compensation capacitor amount, Auto-matching experiment needed for experiment, automatic or manual are thrown
Cut reactive-load compensation capacitor group；Mutual-inductor tester by setting sample point automatic measurement and record the ratio of current transformer to be measured
Value difference and phase difference.The data of measurement can store, be uploaded to processor, and automatically generate test report, and can store and beat
Print report.
Embodiment two：
The present embodiment and embodiment one the difference is that：
As shown in Fig. 2, main voltage regulator is connected with fine-adjusting unit, the fine-adjusting unit is by auxiliary voltage regulator and isolating transformer
Composition, the auxiliary voltage regulator are the same input terminal with the main voltage regulator, and the isolating transformer is by primary side winding and pair
Side winding is constituted, and the primary side winding of the isolating transformer and the output end of auxiliary voltage regulator connect, the isolating transformer
Output end is connected with the output end of main voltage regulator.
In one optional embodiment of the present embodiment, as shown in Fig. 2, the compensation capacitor is multiple, between each other
Parallel connection, there are one the second on-off switches for each described compensation capacitor series connection.Using main compensation device and more auxiliary compensations
The mode of device parallel connection can realize precisely compensation；, using primary side parallel capacitive compensation mode, select to close using intelligentized control method
The compensating electric capacity of reason, the capacitive reactive power of compensating electric capacity and the inductive reactive power in circuit are offset so that power supply and surge capacity only need
The active consumption for providing circuit substantially reduces the capacity requirement to experiment power supply and testing equipment.
The protection scope of the utility model is not limited thereto.Those skilled in the art are in the utility model on the basis of institute
The equivalent substitute of work or transformation, both are within the protection scope of the present invention.The scope of protection of the utility model is wanted with right
It asks subject to book.
Claims (8)
1. a kind of 1000kV AC extra high voltages current transformer error verifies mobile platform, which is characterized in that including：Babinet and
Check system, monitoring system, display device, input unit, sensing system and the processor being set in the babinet, it is described
Check system, monitoring system, display device, input unit, sensing system are connected to the processor respectively, on the babinet
Offer door and window, wherein in the check system, power supply the first pressure regulator primary side of connection, the two of first pressure regulator
The primary side of secondary side and current lifting device connects, and compensation capacitor is parallel to the primary side of the current lifting device, the current lifting device it is secondary
Side is connect with a major loop, and the first winding of standard current transformer and current transformer to be measured is serially connected with the primary master
In circuit, the secondary winding one of standard current transformer terminates the To binding posts of mutual-inductor tester, another termination mutual inductor school
The K binding posts of instrument are tested, secondary winding one end of current transformer to be measured is connect by Burden box and the Tx of the mutual-inductor tester
Terminal connects, and the other end is connect with the K binding posts of the mutual-inductor tester.
2. 1000kV AC extra high voltages current transformer error as described in claim 1 verifies mobile platform, which is characterized in that
Further include the second pressure regulator, primary side is connect by the first on-off switch with the power supply, secondary in the check system
The primary side of side and isolating transformer connects, the secondary side string of the secondary side of the isolating transformer and first pressure regulator
Connection, and it is connected to the primary side of the current lifting device.
3. 1000kV AC extra high voltages current transformer error as described in claim 1 or 2 is any verifies mobile platform, special
Sign is that the compensation capacitor is multiple, and in parallel between each other, there are one second for each described compensation capacitor series connection
On-off switch.
4. 1000kV AC extra high voltages current transformer error as claimed in claim 3 verifies mobile platform, which is characterized in that
The power supply is double pressure regulation electrician's power supplys.
5. 1000kV AC extra high voltages current transformer error as claimed in claim 4 verifies mobile platform, which is characterized in that
One circle of standard current transformer primary side punching.
6. 1000kV AC extra high voltages current transformer error as claimed in claim 5 verifies mobile platform, which is characterized in that
The sensing system includes temperature sensor and humidity sensor, and the temperature sensor and the humidity sensor acquire institute
The temperature and humidity in babinet is stated, and by the processor, result is shown in the display device.
7. 1000kV AC extra high voltages current transformer error as claimed in claim 6 verifies mobile platform, which is characterized in that
The monitoring system includes：Outdoor type high-definition camera, the experiment alarm caution bell being set to above the box inside
With four warning lamps.
8. 1000kV AC extra high voltages current transformer error as claimed in claim 7 verifies mobile platform, which is characterized in that
Further include safety and comfortable configuration comprising：Field lighting lamp, fire extinguisher, top formula air conditioner, office chair, computer and printing
Machine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721380555.9U CN207663042U (en) | 2017-10-24 | 2017-10-24 | 1000kV AC extra high voltage current transformer errors verify mobile platform |
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| CN201721380555.9U CN207663042U (en) | 2017-10-24 | 2017-10-24 | 1000kV AC extra high voltage current transformer errors verify mobile platform |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212456A (en) * | 2018-09-07 | 2019-01-15 | 中国电力科学研究院有限公司 | A kind of method and system of the measurement winding voltage measurement stability of determining power supply type voltage transformer |
| CN109507626A (en) * | 2018-11-01 | 2019-03-22 | 苏州华电电气股份有限公司 | Extra-high voltage direct-current transformer checking system |
| CN111443323A (en) * | 2020-04-26 | 2020-07-24 | 国网福建省电力有限公司 | 30000A current transformer field mobile calibration system |
| CN113589221A (en) * | 2021-09-27 | 2021-11-02 | 武汉磐电科技股份有限公司 | Current transformer detection vehicle with high-altitude operation system |
| CN113655428A (en) * | 2021-09-06 | 2021-11-16 | 国家电网有限公司 | Automatic verification system based on standard current transformer |
-
2017
- 2017-10-24 CN CN201721380555.9U patent/CN207663042U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212456A (en) * | 2018-09-07 | 2019-01-15 | 中国电力科学研究院有限公司 | A kind of method and system of the measurement winding voltage measurement stability of determining power supply type voltage transformer |
| CN109507626A (en) * | 2018-11-01 | 2019-03-22 | 苏州华电电气股份有限公司 | Extra-high voltage direct-current transformer checking system |
| CN111443323A (en) * | 2020-04-26 | 2020-07-24 | 国网福建省电力有限公司 | 30000A current transformer field mobile calibration system |
| CN113655428A (en) * | 2021-09-06 | 2021-11-16 | 国家电网有限公司 | Automatic verification system based on standard current transformer |
| CN113589221A (en) * | 2021-09-27 | 2021-11-02 | 武汉磐电科技股份有限公司 | Current transformer detection vehicle with high-altitude operation system |
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