CN104391155A - Dedicated electronic instrument transformer for HGIS (Hybrid Gas Insulated Switchgear) - Google Patents
Dedicated electronic instrument transformer for HGIS (Hybrid Gas Insulated Switchgear) Download PDFInfo
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- CN104391155A CN104391155A CN201410774127.9A CN201410774127A CN104391155A CN 104391155 A CN104391155 A CN 104391155A CN 201410774127 A CN201410774127 A CN 201410774127A CN 104391155 A CN104391155 A CN 104391155A
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- hgis
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- mutual inductor
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Abstract
The invention discloses a dedicated electronic instrument transformer for an HGIS, and belongs to the technical field of instrument transformers. The dedicated electronic instrument transformer comprises a bush housing, an electric conductor, a sensing head component and a collector, wherein the electric conductor, the sensing head component and the collector are arranged in the bush housing; the sensing head component comprises a capacitance ring, a Rogowski coil and a low-power current transformer; meanwhile, the sensing head component is connected with the collector; a capacitance gas insulating medium is arranged between the capacitance ring and the bush housing; a cocurrent bus in the bush housing serves as a high voltage polar plate of a capacitance voltage divider of an electronic voltage transformer; the bush housing serves as a grounding polar plate of the capacitance voltage divider; the collector comprises a power supply module and a data processing module. The dedicated electronic instrument transformer for the HGIS has the benefits that the transformer is free of magnetic saturation, wide in frequency response range, high in precision, good in transient characteristics, free of high-voltage insulation, wide in range of temperature application and the like; the design is simplified; the transformer is connected through optical fibers, and the digital signals are transmitted through the optical fibers, so that the EMI (Electro-Magnetic Interference) resistance can be enhanced, and the data reliability is greatly increased.
Description
Technical field
The present invention relates to the technical field of mutual inductor, particularly relate to a kind of HGIS specialized electronic formula mutual inductor.
Background technology
Intelligent substation is one of important node of intelligent grid construction, and intelligent substationization can significantly improve grid stability and reliability, transport capacity.Intelligent HGIS combined electrical apparatus has adapted to intelligent substation construction requirements, information support function to optimal dispatch and operational management can be provided, for the intelligent scheduling of electrical network and the operational management of equipment provide optimization and decision-making foundation, promote transformer station's asset management and operation level.
Traditional traditional mutual inductor adopts oil or SF6, is difficult to avoid the phenomenons such as mutual inductor leakage of oil gas leakage; The shortcomings such as frequency response range is narrow, precision is low, transient characterisitics are poor, simultaneously because the scope that the change of temperature causes transformer error to float is comparatively large, poor reliability.
Summary of the invention
Problem to be solved by this invention is: provide one to avoid leakage of oil of leaking gas, frequency response range is large, precision is high and the electronic mutual inductor that transient characterisitics are good, and its Acclimation temperature scope is large simultaneously, and reliability is high.
To achieve the above object, the solution of the present invention is: a kind of HGIS specialized electronic formula mutual inductor, comprises the electric conductor in socket case, socket case and the sensor element in socket case; In this socket case, sensing head parts comprise electric capacity ring, Luo-coil and low power current transformer; Wherein be provided with electric capacity solid dielectric insulation between electric capacity ring and socket case, electric capacity ring set is located on electric conductor simultaneously, and is provided with insulating gas between electric capacity ring and electric conductor; And Luo-coil and low power current transformer are sheathed on electric conductor equally; Sensing head parts are connected with collector simultaneously; Collector comprises power module and data processing module.
Further, in order to the gas density of measuring unit tube shell inside, in socket case, Gas Density Sensor is provided with.
Further, in order to the temperature of measuring unit tube shell, socket case is provided with temperature sensor.
Further, in order to export the data that collector gathers, this collector is connected with a combiner.
Further, in order to strengthen anti-EMI filter performance, improve the reliability of data, this collector and combiner are by Fiber connection and transmit data.
Further, in order to avoid the appearance of High-Voltage Insulation problem, this collector and combiner adopt DC low voltage power supply to power.
Further, in order to improve insulating property, the insulating medium between electric capacity ring and socket case adopts the fat that insulate exhausted.
Beneficial aspects of the present invention is: realize the big current progress of disease by Rogowski coil, the advantage such as has without magnetic saturation, frequency response range is wide, precision is high, transient characterisitics are good, is conducive to the realization of novel protected principle and improves protective value; HGIS specialized electronic formula current/voltage mutual inductor principle belongs to low-voltage electrical apparatus, there is not High-Voltage Insulation problem; The working power of collector unit is by the direct-current power supply in convergence control cabinet; Instead of oil or the SF6 of traditional mutual inductor with the fat that insulate, avoid the phenomenon phenomenons such as mutual inductor leakage of oil gas leakage; Current protection accuracy of instrument transformers reaches 5TPE, and Verification of Measuring Current Transformer accuracy can meet 0.1 grade and 0.2S level simultaneously; Voltage measuring transformer accuracy can reach 0.2 grade, realizes protection function simultaneously; Within the scope of total temperature, transformer error all maintains within the scope of corresponding class of accuracy; Directly can provide the various failure messages such as such as broken string, lockable protection after secondary device receives, simplified design; Can receive the analog input of traditional mutual inductor, the machine is completed analog to digital conversion and is exported by fiber optic Ethernet, completes the used in combination of electronic mutual inductor and traditional mutual inductor; Collector is connected by optical fiber with combiner, and digital signal is by Optical Fiber Transmission, and enhance anti-EMI filter performance, data reliability improves greatly.The self-checking function that electronic mutual inductor is complete, if there is communication failure or electronic mutual inductor fault, protective device or will can not receive the correct data of check code and directly can judge that mutual inductor is abnormal because of mistake mark; Solid-filling ensure that the stability of mutual inductor mechanical property and electric property, without the need to the leak detection of inspection pressure, non-maintaining in operational process.Export as digital signal, without traditional secondary load concept; Phototube Coupling makes Current Transformer Secondary open circuit, voltage transformer secondary short circuit may cause jeopardizing the problem such as equipment or personal safety and not exist.The application of cheap optical fiber cable, greatly reduces the comprehensive use cost of electronic mutual inductor.In high pressure and UHV (ultra-high voltage), the manufacturing cost of electronic mutual inductor has clear superiority, and high performance-price ratio embodies especially remarkable.
accompanying drawing is described
1. HGIS specialized electronic formula mutual inductor structural principle schematic diagram in Fig. 1 the present invention;
2. the broken section structural representation of HGIS specialized electronic formula mutual inductor in Fig. 2 the present invention;
3. Fig. 3 is the external structure schematic diagram of the embodiment of the present invention;
4. Fig. 4 is inner partial structurtes schematic diagram in the embodiment of the present invention;
In figure: 1-sensing head parts, 4-housing, 5-collector, 6-combiner, 8-insulating gas, 9-electric conductor, 11-Luo-coil, 12-low power current transformer, 13-electric capacity ring, 41-Gas Density Sensor, 42-temperature sensor.
Specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figures 1 to 4, a kind of HGIS specialized electronic formula mutual inductor, comprises the electric conductor 9 in socket case 4, socket case 4 and the sensor element 1 in socket case 4;
In described socket case 4, sensing head parts 1 comprise electric capacity ring 13, Luo-coil 11 and low power current transformer 12; Between electric capacity ring 13 and socket case 4, be provided with electric capacity solid dielectric insulation, insulating medium adopts the insulation of insulation fat.Electric capacity ring 13 is sheathed on electric conductor 9 simultaneously, and is provided with insulating gas 8 between electric capacity ring 13 and electric conductor 9; Luo-coil 11 and low power current transformer 12 are sheathed on electric conductor 9 equally; Sensing head parts 1 are connected with collector 5; Collector 5 comprises power module and data processing module.Collector 5 and combiner 6 are by Fiber connection and transmit data.Collector 5 and combiner 6 adopt DC low voltage power supply to power.
Gas Density Sensor 41 is also provided with in socket case 4; Socket case 4 is provided with temperature sensor 42.
The progress of disease of system voltage current signal is that small voltage Signal transmissions is to collector 5 by sensing head parts 1; collector 5 to convert to after digital signal by Optical Fiber Transmission to combiner 6 again; by fiber optic Ethernet interface for electric testing instrument and protective relaying device; cover all application scenarios of traditional mutual inductor, wherein to ac high-voltage, UHV (ultra-high voltage) and require that high occasion is especially applicable to precision, transient characterisitics.Wherein collector 5 and combiner 6 adopt DC low voltage power supply to power; Mutual inductor adopts the insulation of insulation fat.
Achieve the big current progress of disease with Luo-coil 11, the advantage such as there is without magnetic saturation, frequency response range is wide, precision is high, transient characterisitics are good, be conducive to the realization of novel protected principle and improve protective value; HGIS specialized electronic formula current/voltage mutual inductor principle belongs to low-voltage electrical apparatus, there is not High-Voltage Insulation problem; The working power of collector 5 unit is by the direct-current power supply in convergence control cabinet; Instead of oil or the SF6 of traditional mutual inductor with the fat that insulate, avoid the phenomenon phenomenons such as mutual inductor leakage of oil gas leakage; Current protection accuracy of instrument transformers reaches 5TPE, and Verification of Measuring Current Transformer accuracy can meet 0.1 grade and 0.2S level simultaneously; Voltage measuring transformer accuracy can reach 0.2 grade, realizes protection function simultaneously; Within the scope of total temperature, transformer error all maintains within the scope of corresponding class of accuracy; Directly can provide the various failure messages such as such as broken string, lockable protection after secondary device receives, simplified design; Can receive the analog input of traditional mutual inductor, the machine is completed analog to digital conversion and is exported by fiber optic Ethernet, completes the used in combination of electronic mutual inductor and traditional mutual inductor; Collector 5 is connected by optical fiber with combiner 6, and digital signal is by Optical Fiber Transmission, and enhance anti-EMI filter performance, data reliability improves greatly; The self-checking function that electronic mutual inductor is complete, if there is communication failure or electronic mutual inductor fault, protective device or will can not receive the correct data of check code and directly can judge that mutual inductor is abnormal because of mistake mark; Solid-filling ensure that the stability of mutual inductor mechanical property and electric property, without the need to the leak detection of inspection pressure, non-maintaining in operational process.Export as digital signal, without traditional secondary load concept; Phototube Coupling makes Current Transformer Secondary open circuit, voltage transformer secondary short circuit may cause jeopardizing the problem such as equipment or personal safety and not exist.The application of cheap optical fiber cable, greatly reduces the comprehensive use cost of electronic mutual inductor.In high pressure and UHV (ultra-high voltage), the manufacturing cost of electronic mutual inductor has clear superiority, and high performance-price ratio embodies especially remarkable.
Claims (7)
1. a HGIS specialized electronic formula mutual inductor, is characterized in that: comprise the electric conductor (9) in socket case (4), socket case (4) and the sensor element (1) in socket case (4); The interior sensing head parts (1) of described socket case (4) comprise electric capacity ring (13), Luo-coil (11) and low power current transformer (12); Be provided with electric capacity solid dielectric insulation between described electric capacity ring (13) and socket case (4), described electric capacity ring (13) is sheathed on electric conductor (9) simultaneously, and is provided with insulating gas (8) between described electric capacity ring (13) and electric conductor (9); Described Luo-coil (11) and low power current transformer (12) are sheathed on electric conductor (9) equally; Described sensing head parts (1) are connected with collector (5); Described collector (5) comprises power module and data processing module.
2. a kind of HGIS specialized electronic formula mutual inductor according to claim 1, is characterized in that: be provided with Gas Density Sensor (41) in described socket case (4).
3. a kind of HGIS specialized electronic formula mutual inductor according to claim 1, is characterized in that: described socket case (4) is provided with temperature sensor (42).
4. a kind of HGIS specialized electronic formula mutual inductor according to claim 1, is characterized in that: described collector (5) is connected with a combiner (6).
5. a kind of HGIS specialized electronic formula mutual inductor according to claim 2, is characterized in that: described collector (5) and combiner (6) are by Fiber connection and transmit data.
6. a kind of HGIS specialized electronic formula mutual inductor according to claim 2, is characterized in that: described collector (5) and combiner (6) adopt DC low voltage power supply to power.
7. a kind of HGIS specialized electronic formula mutual inductor according to claim 1, is characterized in that: the insulating medium between described electric capacity ring (13) and socket case (4) adopts the fat that insulate to insulate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410774127.9A CN104391155A (en) | 2014-12-16 | 2014-12-16 | Dedicated electronic instrument transformer for HGIS (Hybrid Gas Insulated Switchgear) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410774127.9A CN104391155A (en) | 2014-12-16 | 2014-12-16 | Dedicated electronic instrument transformer for HGIS (Hybrid Gas Insulated Switchgear) |
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| CN104391155A true CN104391155A (en) | 2015-03-04 |
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| CN201410774127.9A Pending CN104391155A (en) | 2014-12-16 | 2014-12-16 | Dedicated electronic instrument transformer for HGIS (Hybrid Gas Insulated Switchgear) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU210597U1 (en) * | 2021-12-13 | 2022-04-21 | Общество с ограниченной ответственностью Научно-производственное объединение "Цифровые измерительные трансформаторы" (ООО НПО "ЦИТ") | DIGITAL CURRENT AND VOLTAGE TRANSFORMER |
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| CN101615502A (en) * | 2009-05-07 | 2009-12-30 | 国网电力科学研究院 | A kind of double layered bell jar type voltage and current sensor |
| US20110141644A1 (en) * | 2009-12-15 | 2011-06-16 | Hastings Jerome K | Direct current arc fault circuit interrupter, direct current arc fault detector, noise blanking circuit for a direct current arc fault circuit interrupter, and method of detecting arc faults |
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| CN203465335U (en) * | 2013-08-22 | 2014-03-05 | 常州博瑞电力自动化设备有限公司 | GIS-type electronic mutual inductor housing |
| CN204269707U (en) * | 2014-12-16 | 2015-04-15 | 国家电网公司 | A kind of HGIS specialized electronic formula mutual inductor |
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2014
- 2014-12-16 CN CN201410774127.9A patent/CN104391155A/en active Pending
Patent Citations (6)
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| CN101615502A (en) * | 2009-05-07 | 2009-12-30 | 国网电力科学研究院 | A kind of double layered bell jar type voltage and current sensor |
| US20110141644A1 (en) * | 2009-12-15 | 2011-06-16 | Hastings Jerome K | Direct current arc fault circuit interrupter, direct current arc fault detector, noise blanking circuit for a direct current arc fault circuit interrupter, and method of detecting arc faults |
| CN203465335U (en) * | 2013-08-22 | 2014-03-05 | 常州博瑞电力自动化设备有限公司 | GIS-type electronic mutual inductor housing |
| CN103558440A (en) * | 2013-10-22 | 2014-02-05 | 江苏靖江互感器厂有限公司 | Intelligent electronic type voltage transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU210597U1 (en) * | 2021-12-13 | 2022-04-21 | Общество с ограниченной ответственностью Научно-производственное объединение "Цифровые измерительные трансформаторы" (ООО НПО "ЦИТ") | DIGITAL CURRENT AND VOLTAGE TRANSFORMER |
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Application publication date: 20150304 |
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