CN110646663A - Primary and secondary depth fusion combined sensor for vacuum circuit breaker - Google Patents
Primary and secondary depth fusion combined sensor for vacuum circuit breaker Download PDFInfo
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- CN110646663A CN110646663A CN201911030519.3A CN201911030519A CN110646663A CN 110646663 A CN110646663 A CN 110646663A CN 201911030519 A CN201911030519 A CN 201911030519A CN 110646663 A CN110646663 A CN 110646663A
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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
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- 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
- G01R15/04—Voltage dividers
- G01R15/06—Voltage dividers having reactive components, e.g. capacitive transformer
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- 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
- G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The invention discloses a primary and secondary depth fusion combined sensor for a vacuum circuit breaker, which is characterized in that a high-voltage end phase sequence polypropylene capacitor, a high-voltage end zero sequence polypropylene capacitor and a high-voltage end energy-taking polypropylene capacitor are arranged below a vacuum arc extinguish chamber in each phase circuit; the outgoing wire conducting rod is provided with a current fixing block along the outer circumference, a current coil is arranged on the current fixing block, and a current equalizing ring is arranged on the left side of the current fixing block; the current signals output by the current part aviation connecting piece in a gathering way and the voltage signals output by the voltage part aviation connecting piece in a gathering way output current voltage zero sequence signals through a sensor shielding bus, and the alternating current energy-taking signals output direct current voltage power supply signals through an alternating current-direct current conversion device; the invention is a high-voltage, novel sensor for measurement, protection, power taking and switching, and has the advantages of light weight, small volume, installation space saving, field wiring reduction, simple and compact structure and excellent performance; the outdoor ZW32 breaker is suitable for matching use.
Description
Technical Field
The invention relates to the field of sensors, in particular to a primary and secondary depth fusion combined sensor for a vacuum circuit breaker.
Background
In order to meet the requirement of fine management of the national power grid line loss and realize the distribution network branching line loss measurement, a new requirement needs to be provided for a primary equipment current and voltage sensor so as to meet the requirement of measurement precision. With the rapid development of electronic technology, a microcomputer type relay protection device gradually takes a leading position, and in relay protection and measurement, energy flow and information flow of a control part are separated, so that a monitoring device does not need a transformer with high power output for sampling. Meanwhile, due to the rapid development of the power industry and the more complex power grid condition, the intelligent current-voltage transformer for improving the power factor and the quality of the power grid is widely applied. In the prior art, a single-phase zero-sequence current transformer, a single-phase voltage transformer and a single-phase power supply voltage transformer are all independent structures; the occupied space is large; the ZW32 vacuum circuit breaker has smaller switching space and is inconvenient to install and operate; the traditional electromagnetic sampling device has the defects of narrow frequency band, slow response and the like; therefore, a primary and secondary depth fusion combined sensor for the ZW32 vacuum circuit breaker needs to be developed.
Disclosure of Invention
The invention aims to provide a primary and secondary depth fusion combined sensor for a vacuum circuit breaker, which has a simple structure and solves the technical problems.
In order to achieve the technical purpose and achieve the technical requirements, the invention adopts the technical scheme that: the utility model provides a vacuum circuit breaker is with a secondary degree of depth integration combination sensor which characterized in that: the energy-taking circuit comprises an A-phase, a B-phase and a C-phase sequence, a zero sequence and an energy-taking circuit, wherein a vacuum arc extinguish chamber is arranged in each phase circuit, an incoming line conducting rod is arranged at the upper end of the vacuum arc extinguish chamber, and a high-voltage end phase sequence polypropylene capacitor, a high-voltage end zero sequence polypropylene capacitor and a high-voltage end energy-taking polypropylene capacitor are arranged below the vacuum arc extinguish chamber; a capacitor support is arranged between the high-voltage end sequence polypropylene capacitor, the high-voltage end energy-taking polypropylene capacitor and the incoming line conducting rod; an outgoing conducting rod is arranged on the left side of the vacuum arc extinguish chamber, a current fixing block is arranged along the outer circumference of the outgoing conducting rod, a current coil is arranged on the current fixing block, the current coil is connected with a current part aviation connecting piece, and a current equalizing ring is arranged on the left side of the current fixing block; the current of each phase circuit is collected through a current part aviation connecting piece to output a current signal; the voltage of each phase circuit is collected through a voltage part aviation connecting piece to output a voltage signal; the current signal and the voltage signal enter the multifunctional sensor signal box simultaneously, eight signals are output through the sensor shielding bus, the current voltage and the zero sequence, and the three alternating current energy obtaining signals output direct current voltage power supply signals through the alternating current-direct current conversion device.
Preferably: the current parts in the A-phase circuit, the B-phase circuit and the C-phase circuit adopt low-temperature drift non-inductive metal film resistors to be connected in parallel to output phase zero-sequence voltage small signals.
Preferably: the high-voltage end and the low-voltage end of the voltage part in the circuits of the phase A, the phase B and the phase C are all axial polypropylene capacitors, and voltage division is carried out to output small voltage signals; each circuit independently outputs a voltage small signal, the output is linear in the whole measuring range, the phase sequence, the zero sequence and the energy taking voltage small signal are ensured to be separately output, the interference and the influence are avoided, and the measurement, the protection and the energy supply signals independently work.
Preferably: before the energy-taking voltage is output, the positive pole of the voltage is led out in series by adopting an inductor, and the current is reasonably distributed.
Preferably: the current, voltage and energy taking primary signals and the vacuum arc-extinguishing chamber are fixedly sealed in the pole, the multifunctional sensor signal box is a secondary voltage division part, and the AC-DC conversion device converts energy taking AC signals into DC signals for charging and discharging of the battery.
Preferably: the multifunctional signal box is internally provided with an axial secondary polypropylene film capacitor, and the ratio difference is adjusted at any time through the parallel secondary polypropylene film capacitor, so that the requirement of the ratio difference is met under different load conditions.
The invention has the beneficial effects; a first and second depth fusion combined sensor for a vacuum circuit breaker is disclosed, compared with the traditional structure: the invention has light weight, small volume, space saving in installation, simple and compact structure and excellent performance, and reduces field wiring; the method comprises the following steps of combining a single-phase zero-sequence current transformer, a single-phase voltage transformer and a single-phase power supply voltage transformer together; by designing an internal circuit and shielding an electromagnetic field, the online monitoring and self-diagnosis of all measurement and protection signals are completed while the accuracy and reliability of sampling data are ensured; simultaneously, the functions of zero sequence protection and power taking are added, and three-phase sequence (protection, measurement and metering) current signals, voltage signals, zero sequence current signals, zero sequence voltage signals and power taking signals are provided; the built-in vacuum arc-extinguishing chamber also plays the role of a breaker switch; the invention relates to a high-voltage, novel sensor for measurement, protection, power taking and switching, which is suitable for being matched with an outdoor ZW32 circuit breaker. The sensor has powerful functions, small signal output does not need secondary conversion, and the sensor can be directly connected into secondary equipment through A/D conversion, thereby meeting the development requirements of digitalization, intellectualization and networking in various fields of power industry, such as control and protection of power grid electrical equipment, state maintenance, electric energy metering, electric energy quality measurement and the like. The measurement range is wide, and the major fault hidden danger in the operation of the power system is fundamentally eliminated by sampling the small voltage signals, so that the safety of personnel and equipment is ensured to the greatest extent.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic circuit diagram of the current portion of the deep fusion combi sensor of the present invention;
FIG. 3 is a schematic diagram of a voltage and energy extraction circuit of a deep fusion combinational sensor according to the present invention.
In the figure: 1. leading in a wire conductive rod; 2. epoxy resin casting; 3. a capacitive support; 4. a vacuum arc-extinguishing chamber; 5. a high-voltage end phase sequence polypropylene capacitor; 6. a high-voltage end zero-sequence polypropylene capacitor; 7. the high-voltage end is provided with an energy-taking polypropylene capacitor; 8. a voltage section aircraft connection; 9. a current coil; 10. a current fixing block; 11. an outgoing line conductive rod; 12. a current grading ring; 13. a current section aeronautical connection piece; 14. a secondary connection shielded wire; 15. a multifunctional sensor signal box; 16. an AC/DC conversion device; 17. the sensor shields the bus.
Detailed Description
In order to make the objects, technical solutions and advantageous technical effects of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments;
in the drawings: the utility model provides a vacuum circuit breaker is with a secondary degree of depth integration combination sensor which characterized in that: the energy-taking circuit comprises an A-phase, a B-phase and a C-phase sequence, a zero sequence and an energy-taking circuit, wherein a vacuum arc extinguish chamber 4 is arranged in each phase circuit, an incoming wire conducting rod 1 is arranged at the upper end of the vacuum arc extinguish chamber 4, and a high-voltage end phase sequence polypropylene capacitor 5, a high-voltage end zero sequence polypropylene capacitor 6 and a high-voltage end energy-taking polypropylene capacitor 7 are arranged below the vacuum arc extinguish chamber 4; a capacitor support 3 is arranged between the high-voltage end sequence polypropylene capacitor 5, the high-voltage end sequence polypropylene capacitor 6, the high-voltage end energy-taking polypropylene capacitor 7 and the incoming line conducting rod 1; an outgoing conducting rod 11 is arranged on the left side of the vacuum arc-extinguishing chamber 4, a current fixing block 10 is arranged along the outer circumference of the outgoing conducting rod 11, a current coil 9 is arranged on the current fixing block 10, the current coil 9 is connected with a current part aviation connecting piece 13, and a current equalizing ring 12 is arranged on the left side of the current fixing block 10; the current of each phase circuit is collected through a current part aviation connecting piece 13 to output a current signal; the voltage of each phase circuit is collected through a voltage part aviation connecting piece 8 to output a voltage signal; the current signal and the voltage signal enter the multifunctional sensor signal box 15 through the primary and secondary connecting shielding wire 14, eight signals including current and voltage zero sequences are output through the sensor shielding bus 17, and the three alternating current energy-obtaining signals output direct current voltage power supply signals through the alternating current-direct current conversion device.
The current parts in the A-phase, B-phase and C-phase circuits adopt low-temperature drift non-inductive metal film resistors to be connected in parallel to output phase zero-sequence voltage small signals; the high-voltage end and the low-voltage end of the voltage part in the circuits of the phase A, the phase B and the phase C are all axial polypropylene capacitors, and voltage division is carried out to output small voltage signals; each circuit independently outputs a small voltage signal, the output is linear in the whole measurement range, the phase sequence, the zero sequence and the small energy taking voltage signal are ensured to be separately output, the interference and the influence are avoided, and the measurement, the protection and the energy supply signals independently work; before the energy-taking voltage is output, the positive pole of the voltage is led out in series by adopting an inductor, and the current is reasonably distributed; the current, voltage and energy-taking primary signals and the vacuum arc-extinguishing chamber are fixedly sealed in the pole, the multifunctional sensor signal box is a secondary voltage-dividing part, and the AC-DC conversion device converts energy-taking AC signals into DC signals for charging and discharging the battery; the multifunctional signal box is internally provided with an axial secondary polypropylene film capacitor, and the ratio difference is adjusted at any time through the parallel secondary polypropylene film capacitor, so that the requirement of the ratio difference is met under different load conditions.
The invention is implemented specifically as follows: 1. the principle of low-energy-consumption small iron core coils is adopted:
the small iron core coil type low-power current transformer is a development of the traditional electromagnetic current transformer, and comprises a primary winding small iron core and a secondary winding with extremely low loss. The secondary winding is connected to an integration element Ra, and thus its secondary output is a voltage signal. Secondary current I2The voltage drop Us generated across the integrated component Ra is proportional in magnitude to the primary current and in phase. Moreover, the smaller the secondary power required by the internal loss and load of the transformer, the wider the measurement range and the higher the accuracy.
2. The principle of capacitive voltage division is adopted:
the voltage sensor adopts a capacitance voltage division principle, the capacitance value of the internal capacitance is linear in the whole measurement range than the output of the internal capacitance, and the principle is as shown in the figure: in the figure 5, a high-voltage end sequence polypropylene capacitor 6, a high-voltage end zero sequence polypropylene capacitor 7, a high-voltage end energy-taking polypropylene capacitor 15, a low-voltage end sequence polypropylene capacitor, a low-voltage end zero sequence polypropylene capacitor and a low-voltage end energy-taking polypropylene capacitor in a multifunctional sensor signal box are used for voltage division. The principle converts the primary high voltage into the low voltage, and outputs the secondary voltage which meets the standard after being processed. In specific implementation, the high-voltage capacitor of the invention has nine paths, three paths of phase sequences, three paths of zero sequences and three paths of energy extraction. And respectively outputting three-phase, zero sequence and energy-taking primary voltage. Seven low-voltage capacitors are secondary capacitors of voltage, three phase sequences and one zero sequence are adopted, and three energy obtaining devices respectively output three-phase sequence secondary voltage, shared secondary zero sequence voltage and three-phase energy obtaining secondary voltage. Each primary capacitor is three-way, and is combined into a terminal input, the secondary capacitors are independently output, three ways of three capacitance ratios are formed, and three ways of small voltage signals are output; the three-phase nine-path output, another three-path zero-sequence output is combined into one-path zero-sequence output, namely seven-path output, namely three-phase sequence, one zero-sequence and three energy taking, namely three-path phase sequence is independent, three-path energy taking is independent, and because A, B, C-phase zero-sequence voltage is just 120 degrees of sine wave, the three-path zero-sequence is combined into one-path signal; the output signal of the invention adopts a shielding twisted pair bus to output the signal. The three paths of energy can enter 16 AC/DC conversion devices at the same time. And outputting a direct current voltage signal.
The outer ring whole shielding layer of the shielding twisted-pair bus is just grounded. The zero sequence polypropylene capacitor at the high-voltage end of the capacitor per se has no partial discharge when the zero sequence polypropylene capacitor is 14.4kV in the air, and after the epoxy resin is integrally injected, the partial discharge is avoided when the epoxy resin is bonded into a whole and then the zero sequence polypropylene capacitor is 14.4 kV. The partial discharge amount of the product is small, no discharge exists in the range specified internationally, the consistency of the material and the structure of the primary and secondary capacitors is reduced, the effect of distributed capacitance is reduced, and the phase difference of voltage output signals is small. The error range of the product is almost unchanged when the product works at the temperature of between 40 ℃ below zero and 70 ℃, the eight-core shielding twisted pair is used as output, and the anti-interference capability is strong.
The invention combines the multifunctional requirements of vacuum arc-extinguishing chamber, three-phase current, voltage, energy-taking sampling, measurement, protection, zero sequence and discharge through the intelligent combination of internal circuits. The vacuum circuit breaker switch is applied to the power distribution equipment ZW 32. Really achieves the effect of one-time and two-time deep fusion.
The invention integrates the functions of three-phase current sampling, measurement, protection, zero sequence, three-phase voltage measurement, protection, zero sequence, discharge, three-phase voltage electricity taking and vacuum arc extinguish chamber through the intelligent combination of internal circuits. The switch is applied to a primary and secondary fusion pole switch of distribution equipment. Really achieves the effect of one-time and two-time deep fusion.
The inside spare part of whole product is arranged in order, and the electromagnetic field interference is avoided in the intelligent combination, exports 11 way voltage small signals simultaneously, each other noninterference. Compared with three phase sequence mutual inductors, three zero sequence current transformers, three zero sequence voltage mutual inductors and three discharge coils, the function of the transformer is also more powerful than that of three power supply mutual inductors, and the performance is more superior.
The invention achieves the following service performances:
1. ambient temperature: -40 ℃ to +70 ℃.
2. Altitude: not exceeding the Under 1000 m.
3. No obvious dirt such as dust, smoke, corrosive gas, steam or salt and the like exists in the ambient air.
4. Relative humidity: the average value of the relative humidity measured within 24h must not exceed 95%.
5. The current-voltage integrated sensor allows long-term operation at 1.2 times rated current and voltage.
According to the built-in vacuum arc-extinguishing chamber of the primary and secondary depth fusion combined sensor for the ZW32 vacuum circuit breaker, all current sampling, voltage energy taking, temperature control display and linear switches are integrated together through the signal conditioner and the alternating current-direct current conversion device, and the functions of primary and secondary depth fusion and 'three remote' of a distribution network are really achieved.
The primary-secondary depth fusion combined sensor for the ZW32 vacuum circuit breaker integrates a vacuum arc extinguish chamber, phase zero sequence voltage, phase zero sequence current, phase sequence energy acquisition and temperature control monitoring, and meets the protection function of all measurement levels and energy acquisition at the same time.
The primary and secondary deep fusion combined sensor for the ZW32 vacuum circuit breaker is oriented to incremental equipment in power distribution network construction, aims at safety, reliability and high efficiency fusion, is designed to be standardized, independent in function module and flexible and active in equipment interchange, solves the problems of current and voltage signal remote signaling jitter, compatibility and expansibility of a primary and secondary interface, newly added terminal metering function and the like in power distribution automation construction, improves the operation level, operation and maintenance quality and efficiency of power distribution equipment, meets the technical requirements of line loss management, and serves a power distribution network construction action plan.
The foregoing examples are given solely for the purpose of illustrating the invention and are not to be construed as limiting the embodiments, and other variations and modifications in form thereof will be suggested to those skilled in the art upon reading the foregoing description, and it is not necessary or necessary to exhaustively enumerate all embodiments and all such obvious variations and modifications are deemed to be within the scope of the invention.
Claims (6)
1. The utility model provides a vacuum circuit breaker is with a secondary degree of depth integration combination sensor which characterized in that: the energy-taking circuit comprises an A-phase, a B-phase and a C-phase sequence, a zero sequence and an energy-taking circuit, wherein a vacuum arc extinguish chamber (4) is arranged in each phase circuit, an incoming line conducting rod (1) is arranged at the upper end of the vacuum arc extinguish chamber (4), and a high-voltage end phase sequence polypropylene capacitor (5), a high-voltage end zero sequence polypropylene capacitor (6) and a high-voltage end energy-taking polypropylene capacitor (7) are arranged below the vacuum arc extinguish chamber (4); a capacitor support (3) is arranged between the high-voltage end phase sequence polypropylene capacitor (5), the high-voltage end zero sequence polypropylene capacitor (6), the high-voltage end energy-taking polypropylene capacitor (7) and the incoming line conducting rod (1); an outgoing line conducting rod (11) is arranged on the left side of the vacuum arc-extinguishing chamber (4), a current fixing block (10) is arranged along the outer circumference of the outgoing line conducting rod (11), a current coil (9) is arranged on the current fixing block (10), the current coil (9) is connected with a current part aviation connecting piece (13), and a current equalizing ring (12) is arranged on the left side of the current fixing block (10); the current of each phase circuit is collected through a current part aviation connecting piece (13) to output a current signal; the voltage of each phase circuit is collected through a voltage part aviation connecting piece (8) to output a voltage signal; the current signal and the voltage signal enter a multifunctional sensor signal box (15) through a primary and secondary connection shielding wire (14), eight signals including a current phase and a voltage phase are output through a sensor shielding bus (17), and three alternating current energy-taking signals output a direct current voltage power supply signal through an alternating current-direct current conversion device.
2. The combination sensor of claim 1, wherein the depth fusion sensor comprises: the current parts in the A-phase circuit, the B-phase circuit and the C-phase circuit adopt low-temperature drift non-inductive metal film resistors to be connected in parallel to output phase zero-sequence voltage small signals.
3. The combination sensor of claim 1, wherein the depth fusion sensor comprises: the high-voltage end and the low-voltage end of the voltage part in the circuits of the phase A, the phase B and the phase C are all axial polypropylene capacitors, and voltage division is carried out to output small voltage signals; each circuit independently outputs a voltage small signal, the output is linear in the whole measuring range, the phase sequence, the zero sequence and the energy taking voltage small signal are ensured to be separately output, the interference and the influence are avoided, and the measurement, the protection and the energy supply signals independently work.
4. The combination sensor of claim 1, wherein the depth fusion sensor comprises: before the energy-taking voltage is output, the positive pole of the voltage is led out in series by adopting an inductor, and the current is reasonably distributed.
5. The combination sensor of claim 1, wherein the depth fusion sensor comprises: the current, voltage and energy taking primary signals and the vacuum arc-extinguishing chamber are fixedly sealed in the pole, the multifunctional sensor signal box is a secondary voltage division part, and the AC-DC conversion device converts energy taking AC signals into DC signals for charging and discharging of the battery.
6. The combination sensor of claim 1, wherein the depth fusion sensor comprises: the multifunctional signal box is internally provided with an axial secondary polypropylene film capacitor, and the ratio difference is adjusted at any time through the parallel secondary polypropylene film capacitor, so that the requirement of the ratio difference is met under different load conditions.
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| CN201911030519.3A CN110646663A (en) | 2019-10-28 | 2019-10-28 | Primary and secondary depth fusion combined sensor for vacuum circuit breaker |
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| CN201911030519.3A CN110646663A (en) | 2019-10-28 | 2019-10-28 | Primary and secondary depth fusion combined sensor for vacuum circuit breaker |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113777385A (en) * | 2021-11-10 | 2021-12-10 | 浙江华采科技有限公司 | High-voltage and current combined sensor integrated with capacitive power supply |
| CN114078654A (en) * | 2020-08-11 | 2022-02-22 | 南京南瑞继保电气有限公司 | Solid-sealed polar pole of annular capacitor |
| CN114078653A (en) * | 2020-08-11 | 2022-02-22 | 南京南瑞继保电气有限公司 | Solid-sealed polar pole of tubular capacitor |
| 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 |
| CN116500328A (en) * | 2023-06-06 | 2023-07-28 | 无锡市锡山湖光电器有限公司 | High-precision three-phase current sensor |
| US11996236B2 (en) | 2021-05-26 | 2024-05-28 | Eaton Intelligent Power Limited | Current balancing apparatus and methods for parallel connected circuit breakers |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3678339A (en) * | 1971-03-25 | 1972-07-18 | Westinghouse Electric Corp | Signal transmitting system for extra high voltage transmission line |
| CN201167024Y (en) * | 2008-03-12 | 2008-12-17 | 山东大学 | Self-generation device of a robot for polling a high tension power line |
| KR101324731B1 (en) * | 2013-02-01 | 2013-11-05 | 노신정 | Load breaker switchgear and package panel switchgear having the same |
| KR101325997B1 (en) * | 2012-05-15 | 2013-11-07 | 일진전기 주식회사 | Insulated housing with voltage detection and power switching apparatus using that |
| CN205984624U (en) * | 2016-07-27 | 2017-02-22 | 天安电气集团浙江电气有限公司 | Current inducer |
| CN206076034U (en) * | 2016-08-31 | 2017-04-05 | 山东泰开高压开关有限公司 | A kind of novel electromagnetic current transformer device |
| CN207703928U (en) * | 2017-12-29 | 2018-08-07 | 南京国高电气自动化有限公司 | A kind of voltage and current integral collecting module |
| CN207834190U (en) * | 2018-03-12 | 2018-09-07 | 沈阳汇鼎润达科技有限公司 | A kind of one or two fusion permanent magnetic vacuum breakers of Standard type fixed sealing type |
| CN208568115U (en) * | 2018-08-03 | 2019-03-01 | 珠海知更电气有限公司 | A kind of CT takes electric temperature measuring equipment |
| CN208672699U (en) * | 2018-08-16 | 2019-03-29 | 江苏靖江互感器股份有限公司 | A kind of capacitive built-in voltage sensor of killer switch |
| CN109686612A (en) * | 2019-02-20 | 2019-04-26 | 浙江法拉迪电力科技有限公司 | Breaker column support type pole on one or two fusion serial columns of one kind |
| CN109904032A (en) * | 2019-04-11 | 2019-06-18 | 数邦电力科技有限公司 | A kind of novel vacuum circuit breaker pole |
-
2019
- 2019-10-28 CN CN201911030519.3A patent/CN110646663A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3678339A (en) * | 1971-03-25 | 1972-07-18 | Westinghouse Electric Corp | Signal transmitting system for extra high voltage transmission line |
| CN201167024Y (en) * | 2008-03-12 | 2008-12-17 | 山东大学 | Self-generation device of a robot for polling a high tension power line |
| KR101325997B1 (en) * | 2012-05-15 | 2013-11-07 | 일진전기 주식회사 | Insulated housing with voltage detection and power switching apparatus using that |
| KR101324731B1 (en) * | 2013-02-01 | 2013-11-05 | 노신정 | Load breaker switchgear and package panel switchgear having the same |
| CN205984624U (en) * | 2016-07-27 | 2017-02-22 | 天安电气集团浙江电气有限公司 | Current inducer |
| CN206076034U (en) * | 2016-08-31 | 2017-04-05 | 山东泰开高压开关有限公司 | A kind of novel electromagnetic current transformer device |
| CN207703928U (en) * | 2017-12-29 | 2018-08-07 | 南京国高电气自动化有限公司 | A kind of voltage and current integral collecting module |
| CN207834190U (en) * | 2018-03-12 | 2018-09-07 | 沈阳汇鼎润达科技有限公司 | A kind of one or two fusion permanent magnetic vacuum breakers of Standard type fixed sealing type |
| CN208568115U (en) * | 2018-08-03 | 2019-03-01 | 珠海知更电气有限公司 | A kind of CT takes electric temperature measuring equipment |
| CN208672699U (en) * | 2018-08-16 | 2019-03-29 | 江苏靖江互感器股份有限公司 | A kind of capacitive built-in voltage sensor of killer switch |
| CN109686612A (en) * | 2019-02-20 | 2019-04-26 | 浙江法拉迪电力科技有限公司 | Breaker column support type pole on one or two fusion serial columns of one kind |
| CN109904032A (en) * | 2019-04-11 | 2019-06-18 | 数邦电力科技有限公司 | A kind of novel vacuum circuit breaker pole |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114078654A (en) * | 2020-08-11 | 2022-02-22 | 南京南瑞继保电气有限公司 | Solid-sealed polar pole of annular capacitor |
| CN114078653A (en) * | 2020-08-11 | 2022-02-22 | 南京南瑞继保电气有限公司 | Solid-sealed polar pole of tubular capacitor |
| US11996236B2 (en) | 2021-05-26 | 2024-05-28 | Eaton Intelligent Power Limited | Current balancing apparatus and methods for parallel connected circuit breakers |
| CN113777385A (en) * | 2021-11-10 | 2021-12-10 | 浙江华采科技有限公司 | High-voltage and current combined sensor integrated with capacitive power supply |
| 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 |
| CN116500328A (en) * | 2023-06-06 | 2023-07-28 | 无锡市锡山湖光电器有限公司 | High-precision three-phase current sensor |
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