CN106443131A - Outdoor power-supply and zero-sequence-voltage measuring device - Google Patents
Outdoor power-supply and zero-sequence-voltage measuring device Download PDFInfo
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- CN106443131A CN106443131A CN201610909032.2A CN201610909032A CN106443131A CN 106443131 A CN106443131 A CN 106443131A CN 201610909032 A CN201610909032 A CN 201610909032A CN 106443131 A CN106443131 A CN 106443131A
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- voltage
- fusion tube
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- capacitance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/16—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using capacitive devices
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses an outdoor power-supply and zero-sequence-voltage measuring device. The outdoor power-supply and zero-sequence-voltage measuring device comprises a securely-sealed base; a voltage measuring assembly is arranged in the securely-sealed base in a poured mode, and comprises a capacitance voltage sensor, a fusion tube A, a fusion tube B and a fusion tube C are connected to terminals of the capacitance voltage sensor respectively, a high voltage terminal A, a high voltage terminal B and a high voltage terminal C are connected to the input ends of the fusion tube A, the fusion tube B and the fusion tube C respectively and arranged at the upper end of the securely-sealed base, and a single-phase PT is connected between the input end of the fusion tube A and the input end of the fusion tube B. The zero-sequence-voltage measuring function and the power supply function are integrated, the zero sequence voltage is measured through the fusion tubes and a capacitor, impedance is high, short-circuit faults and resonance overvoltage are not prone to generation, and the influence on an electric power system is small; connection is convenient, the combined structure is small in size and light, convenience is brought to outdoor installation and overhauling, and economical efficiency and creativity are good.
Description
Technical field
The present invention is new to be related to 10kV transmission and distribution network equipment, and more particularly, to a kind of outdoor type is powered and residual voltage measurement
Device.
Background technology
Singlephase earth fault is the most commonly seen fault type of 10kV transmission and distribution network, causes system zero sequence after single-phase earthing
Voltage raises, and once repeatedly occurs causing adjacent transformers neutral point gap breakdown to lead to continue due to circuit single-phase earthing in operation
Electric protection loses selective case.Possesses the predominantly Integral three-phase electromagnetic type of power supply and residual voltage measurement function at present
Voltage transformer.
The impedance very little of electromagnetic potential transformer, once secondary is short-circuited, coil is burnt in sharp increase by electric current.
For this reason, the former limit of zero sequential potential transformer is connected to fuse, secondary secondary voltage circuit has a mutual reinforcement between reliable ground, Yi Mianyuan,
Secondary insulation damage when, secondary occur over the ground high potential and cause the person and equipment breakdown.
There is saturation resonance overvoltage problem unshakable in one's determination.Due to China's 10kV power distribution network be mainly isolated neutral (or
Through grounding through arc) system, except one three-phase five-limb electromagnetic potential transformer (former limit of installation on substation bus bar
Winding neutral ground), typically not in the electromagnetic potential transformers installing neutral ground a large amount of on distribution line, with
Avoid causing circuit resonance overvoltage accident because of multiple neutral grounds.
In practical application, the supporting ca bin of line switching (FTU), switching station's terminal unit (DTU), fault
The failure detectors such as current indicator (FCI) can only judge ground connection event by the size of current of zero sequence current mutual inductor
Barrier, is not measured residual voltage, can not calculate the direction of zero-sequence current, easy false alarm or fail to report police, and accuracy is not high.
Content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the new one kind that provides of the present invention just presses close to metope OR gate face without using person
Can be directly perceived, the outdoor type of the situation in desired location visible in detail or space is powered and residual voltage measurement apparatus.
To achieve these goals, the present invention is new employed technical scheme comprise that：
A kind of outdoor type is powered and residual voltage measurement apparatus, including a sealing base, is cast with voltage in described sealing base
Measurement assembly, described voltage measurement assembly includes a capacitive battery pressure sensor, the terminals of described capacitive battery pressure sensor
It is connected to fusion tube A, fusion tube B and fusion tube C, the input of described fusion tube A, fusion tube B and fusion tube C is connected to HV Terminal
A, HV Terminal B and HV Terminal C, described have HV Terminal A, HV Terminal B and HV Terminal C to be arranged on described sealing base
Upper end, be connected with a single-phase PT between the input of described fusion tube A and the input of fusion tube B, on described sealing base arrange
There is the first ground terminal, the outfan of described capacitive battery pressure sensor is connected with described first ground terminal.
As the improvement further of such scheme, described capacitive battery pressure sensor includes high-voltage capacitance A, high-voltage capacitance B
With high-voltage capacitance C, the input of described high-voltage capacitance A, high-voltage capacitance B and high-voltage capacitance C respectively with described fusion tube A, fusion tube B and
The outfan of fusion tube C connects, and the outfan of described high-voltage capacitance A, high-voltage capacitance B and high-voltage capacitance C is connected in parallel to a low-voltage capacitance
Input, the outfan of described low-voltage capacitance is connected with described first ground terminal.
As the improvement further of such scheme, the lower surface of described sealing base is provided with the first low-voltage terminal, and second
Low-voltage terminal, the 3rd low-voltage terminal and the 4th low-voltage terminal.
As the improvement further of such scheme, described single-phase PT be provided with high-tension coil tap A, high-tension coil tap B,
Low-voltage coil tap A and low-voltage coil tap B, described high-tension coil tap A and high-tension coil tap B are respectively connecting to described molten
Pipe A and the input of fusion tube B, described low-voltage coil tap A and low-voltage coil tap B respectively with described 3rd low-voltage terminal and
Four low-voltage terminals connect.
As the improvement further of such scheme, the lower surface of described sealing base is provided with mounting seat.
The new beneficial effect of the present invention：
A kind of new outdoor type of the present invention is powered and residual voltage measurement apparatus, is integrated with residual voltage measurement function and supplies electric work
Can, carry out the measurement of residual voltage by fusion tube and electric capacity, impedance height is it is not easy to be short-circuited fault and resonance overvoltage, right
Effect on power system is little；Easy to connect, knockdown structural volume is little, lightweight, facilitates outdoor installation and maintenance, economic invention
Property is more preferable.
Brief description
In order to be illustrated more clearly that the technical scheme in new embodiment of the present invention, below will be to required in embodiment description
Accompanying drawing to be used is briefly described.Obviously, described accompanying drawing is the new a part of embodiment of the present invention, rather than entirely
Portion's embodiment, those skilled in the art's on the premise of not paying creative work, can also be obtained according to these accompanying drawings
Other designs and accompanying drawing：
Fig. 1 is the present invention new preferred embodiment electrical schematic diagram；
Fig. 2 is the present invention new preferred embodiment front view；
Fig. 3 is the present invention new preferred embodiment upward view；
Fig. 4 is the present invention new preferred embodiment top view.
Specific embodiment
Technique effect below with reference to embodiment and the accompanying drawing design, concrete structure and generation new to the present invention is carried out
Clearly and completely describe, to be completely understood by the new purpose of the present invention, feature and effect.Obviously, described embodiment
It is the new a part of embodiment of the present invention, rather than whole embodiments, based on the new embodiment of the present invention, the skill of this area
The other embodiment that art personnel's on the premise of not paying creative work is obtained, belongs to the novel protected model of the present invention
Enclose.
Referring to figs. 1 to Fig. 4, a kind of outdoor type is powered and residual voltage measurement apparatus, including a sealing base 6, described solid
It is cast with voltage measurement assembly, the lower surface of described sealing base 6 is provided with mounting seat 7, and described mounting seat 7 is used in back cover seat 6
To be fixed on outdoor grid.Described voltage measurement assembly includes a capacitive battery pressure sensor 1, described capacitor voltage sensing
The terminals of device 1 are connected to fusion tube A2, fusion tube B3 and fusion tube C4, the input of described fusion tube A2, fusion tube B3 and fusion tube C4
It is connected to HV Terminal A61, HV Terminal B62 and HV Terminal C63, described have HV Terminal A61, HV Terminal B62
It is arranged on the upper end of described sealing base 6 with HV Terminal C63, between the input of described fusion tube A2 and the input of fusion tube B3
It is connected with a single-phase PT5, described sealing base is provided with the first ground terminal 66, the output of described capacitive battery pressure sensor
End is connected with described first ground terminal 66.
Described capacitive battery pressure sensor includes high-voltage capacitance A11, high-voltage capacitance B12 and high-voltage capacitance C13, described high pressure
The output with described fusion tube A2, fusion tube B3 and fusion tube C4 respectively of the input of electric capacity A11, high-voltage capacitance B12 and high-voltage capacitance C13
End connects, and the outfan of described high-voltage capacitance A11, high-voltage capacitance B12 and high-voltage capacitance C13 is connected in parallel to the defeated of a low-voltage capacitance 14
Enter end, the outfan of described low-voltage capacitance 14 is connected with described first ground terminal 66.
The lower surface of described sealing base 6 is provided with the first low-voltage terminal 64, the second low-voltage terminal 65, the 3rd low-voltage terminal
67 and the 4th low-voltage terminal 68, described single-phase PT5 are provided with high-tension coil tap A51, high-tension coil tap B52, low-voltage coil
Tap A53 and low-voltage coil tap B54, described high-tension coil tap A51 and high-tension coil tap B52 are respectively connecting to described molten
Pipe A2 and the input of fusion tube B3, described low-voltage coil tap A53 and low-voltage coil tap B54 respectively with described 3rd low-pressure end
Son 67 and the 4th low-voltage terminal 68 connect.Described ground terminal A66 ground connection, then between low-voltage terminal A64 and low-voltage terminal B65
Voltage is residual voltage, and the voltage between low-voltage terminal C67 and low-voltage terminal D68 is line voltage, and line voltage can be used for element
Power supply.
Compared with electromagnetic potential transformer, electronic type zero sequential potential transformer impedance high it is not easy to the fault that is short-circuited
And resonance overvoltage, the small volume of voltage measurement assembly, lightweight, conveniently installation and maintenance little to effect on power system, economy
Invention is more preferable.
The preferred embodiment being more than new to the present invention is illustrated, but the new creation of the present invention is not limited to
Described embodiment, those of ordinary skill in the art also can make a variety of etc. on the premise of spirit new without prejudice to the present invention
With modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (5)
1. a kind of outdoor type power and residual voltage measurement apparatus it is characterised in that：Including a sealing base（6）, described sealing
Base（6）Inside it is cast with voltage measurement assembly, described voltage measurement assembly includes a capacitive battery pressure sensor（1）, described electricity
Appearance formula voltage sensor（1）Terminals be connected to fusion tube A（2）, fusion tube B（3）With fusion tube C（4）, described fusion tube A（2）、
Fusion tube B（3）With fusion tube C（4）Input be connected to HV Terminal A（61）, HV Terminal B（62）With HV Terminal C
（63）, described have HV Terminal A（61）, HV Terminal B（62）With HV Terminal C（63）It is arranged on described sealing base（6）'s
Upper end, described fusion tube A（2）Input and fusion tube B（3）Input between be connected with a single-phase PT（5）, described sealing base
On be provided with the first ground terminal（66）, the outfan of described capacitive battery pressure sensor and described first ground terminal（66）Even
Connect.
2. outdoor type according to claim 1 power and residual voltage measurement apparatus it is characterised in that：Described capacitive battery
Pressure sensor includes high-voltage capacitance A（11）, high-voltage capacitance B（12）With high-voltage capacitance C（13）, described high-voltage capacitance A（11）, high pressure
Electric capacity B（12）With high-voltage capacitance C（13）Input respectively with described fusion tube A（2）, fusion tube B（3）With fusion tube C（4）Outfan
Connect, described high-voltage capacitance A（11）, high-voltage capacitance B（12）With high-voltage capacitance C（13）Outfan be connected in parallel to a low-voltage capacitance
（14）Input, described low-voltage capacitance（14）Outfan and described first ground terminal（66）Connect.
3. outdoor type according to claim 1 power and residual voltage measurement apparatus it is characterised in that：Described sealing base
（6）Lower surface be provided with the first low-voltage terminal（64）, the second low-voltage terminal（65）, the 3rd low-voltage terminal（67）With the 4th low pressure
Terminal（68）.
4. outdoor type according to claim 3 power and residual voltage measurement apparatus it is characterised in that：Described single-phase PT
（5）It is provided with high-tension coil tap A（51）, high-tension coil tap B（52）, low-voltage coil tap A（53）With low-voltage coil tap B
（54）, described high-tension coil tap A（51）With high-tension coil tap B（52）It is respectively connecting to described fusion tube A（2）With fusion tube B（3）
Input, described low-voltage coil tap A（53）With low-voltage coil tap B（54）Respectively with described 3rd low-voltage terminal（67）With
4th low-voltage terminal（68）Connect.
5. outdoor type according to claim 1 power and residual voltage measurement apparatus it is characterised in that：Described sealing base
（6）Lower surface be provided with mounting seat（7）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909032.2A CN106443131A (en) | 2016-10-18 | 2016-10-18 | Outdoor power-supply and zero-sequence-voltage measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610909032.2A CN106443131A (en) | 2016-10-18 | 2016-10-18 | Outdoor power-supply and zero-sequence-voltage measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106443131A true CN106443131A (en) | 2017-02-22 |
Family
ID=58175376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610909032.2A Pending CN106443131A (en) | 2016-10-18 | 2016-10-18 | Outdoor power-supply and zero-sequence-voltage measuring device |
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|---|---|
| CN (1) | CN106443131A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264856A (en) * | 2021-11-16 | 2022-04-01 | 国网山西省电力公司忻州供电公司 | Voltage measurement and energy taking device capable of measuring small current |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1190270A1 (en) * | 1982-04-07 | 1985-11-07 | Всесоюзный Научно-Исследовательский Проектно-Конструкторский И Технологический Институт Взрывозащищенного И Рудничного Электрооборудования | Apparatus for measuring voltage of zero sequence |
| FI19992044A (en) * | 1999-09-23 | 2001-03-23 | Abb Substation Automation Oy | A method for detecting high impedance earth fault in a medium voltage network |
| US20100045246A1 (en) * | 2008-08-19 | 2010-02-25 | Bryant Timothy J | Apparatus And Method For Reverse Power Regulation With Measured Source Side Voltage |
| CN102148490A (en) * | 2011-04-28 | 2011-08-10 | 宏秀电气有限公司 | Three-phase combined type voltage zero sequence transformer |
| CN202735390U (en) * | 2012-05-25 | 2013-02-13 | 珠海许继电气有限公司 | Three-phase zero sequence combined type voltage sensing device |
| CN203813303U (en) * | 2014-05-19 | 2014-09-03 | 平高集团智能电气有限公司 | 10kV outdoor permanent magnet vacuum circuit breaker device |
| CN205643476U (en) * | 2016-04-12 | 2016-10-12 | 珠海许继电气有限公司 | Outdoor zero sequence and phase sequence voltage measurement device |
| CN206161718U (en) * | 2016-10-18 | 2017-05-10 | 珠海许继电气有限公司 | Double zero sequence voltage measuring device of outdoor type power supply |
-
2016
- 2016-10-18 CN CN201610909032.2A patent/CN106443131A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1190270A1 (en) * | 1982-04-07 | 1985-11-07 | Всесоюзный Научно-Исследовательский Проектно-Конструкторский И Технологический Институт Взрывозащищенного И Рудничного Электрооборудования | Apparatus for measuring voltage of zero sequence |
| FI19992044A (en) * | 1999-09-23 | 2001-03-23 | Abb Substation Automation Oy | A method for detecting high impedance earth fault in a medium voltage network |
| US20100045246A1 (en) * | 2008-08-19 | 2010-02-25 | Bryant Timothy J | Apparatus And Method For Reverse Power Regulation With Measured Source Side Voltage |
| CN102148490A (en) * | 2011-04-28 | 2011-08-10 | 宏秀电气有限公司 | Three-phase combined type voltage zero sequence transformer |
| CN202735390U (en) * | 2012-05-25 | 2013-02-13 | 珠海许继电气有限公司 | Three-phase zero sequence combined type voltage sensing device |
| CN203813303U (en) * | 2014-05-19 | 2014-09-03 | 平高集团智能电气有限公司 | 10kV outdoor permanent magnet vacuum circuit breaker device |
| CN205643476U (en) * | 2016-04-12 | 2016-10-12 | 珠海许继电气有限公司 | Outdoor zero sequence and phase sequence voltage measurement device |
| CN206161718U (en) * | 2016-10-18 | 2017-05-10 | 珠海许继电气有限公司 | Double zero sequence voltage measuring device of outdoor type power supply |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114264856A (en) * | 2021-11-16 | 2022-04-01 | 国网山西省电力公司忻州供电公司 | Voltage measurement and energy taking device capable of measuring small current |
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