CN104901299A - Resonant grounding system automatic tracking and compensating device and method - Google Patents
Resonant grounding system automatic tracking and compensating device and method Download PDFInfo
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Abstract
The invention discloses a resonant grounding system automatic tracking and compensating device and method. The device includes a grounding transformer, an arc suppression coil, an arc suppression coil controlled winding, and an MCU, an upper end of the arc suppression coil is connected with a neutral point of the grounding transformer, a lower end of the arc suppression coil is connected to the ground through the arc suppression coil controlled winding, a damping resistor and a current transformer in sequence, and an arc suppression coil controlled winding put-into or exiting-from operation control circuit is connected with the arc suppression coil controlled winding in parallel. According to the method provided by the invention, the arc suppression coil controlled winding is additional mounted on the lower end of the arc suppression coil, and switching-on and switching-off of two bidirectional silicon controlled rectifiers are controlled through the MCU, thereby controlling the arc suppression coil controlled winding to be put into or exit from operation, and capacitive current of the circuit is calculated in real time according to zero sequence current, compensating current and neutral point voltage which are measured before and after the arc suppression coil controlled winding exits from and is put into operation, thereby reducing adjustment of a load switch, and prolonging the service life of the load switch.
Description
Technical field
The present invention relates to tracing compensation device field, specifically a kind of resonant earthed system automatic tracking compensating device and method.
Background technology
China's distrbution network many employings neutral point resonance neutral grounding, when there is single phase ground fault, effectively can suppress arc grounding over-voltage by the compensating action of arc suppression coil, and reducing earth fault current.Now widely used turn-adjusting arc-extinguishing winding, all be operated in the state of overcompensation, in order to reduce ground connection residual flow, it is smaller that its tuning-off degree is all arranged, and for current automatic tracking compensating device, its foundation followed the tracks of and compensate is all capacitance currents of electrical network, in the system of reality, the operational mode of system constantly changes, and the capacitance current in electrical network is also constantly change, so just seem particularly important to the Real-Time Monitoring of electric network capacitance and current.The method of measurement of now widely used capacitance current is tuning method and estimation algorithm, tuning method is the tap by regulating arc suppression coil, suitable compensation point is found according to displacement voltage curve, this method has two shortcomings: the first, too frequent to the adjustment of loaded switch, the life-span of meeting serious curtailment loaded switch, second, this method is inapplicable for the system of special balance, and be difficult to find the compensation point that suitable, the change for system operation mode is also difficult to follow the tracks of.Estimation algorithm is the tap by regulating arc suppression coil, by the zero-sequence current before and after measuring and adjusting, offset current, neutral point voltage, estimates the capacitance current of electrical network according to two-point method, and the subject matter of this method is the life-span very difficult guarantee of loaded switch.
summary of the inventionthe object of this invention is to provide a kind of resonant earthed system automatic tracking compensating device and method, to solve prior art Problems existing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of resonant earthed system automatic tracking compensating device, it is characterized in that: comprise the grounding transformer S1 that resonant earthed system neutral point is provided, arc suppression coil L1, the controlled winding L 2 of arc suppression coil, MCU, the upper end of arc suppression coil L1 is connected with the neutral point of grounding transformer S1, arc suppression coil L1 lower end is connected with arc suppression coil controlled winding L 2 upper end, arc suppression coil controlled winding L 2 lower end is in series with damping resistance R1 successively, ground connection after Current Transmit, the voltage transformer pt measuring neutral point voltage is had access between the neutral point of arc suppression coil L1 and grounding transformer S1, voltage transformer pt, Current Transmit accesses MCU respectively, described MCU is by loaded switch K1 and arc suppression coil L1 control connection, described damping resistance R1 is parallel with damping resistance short circuit loop, the controlled winding L of arc suppression coil 2 is parallel with the controlled winding L of arc suppression coil 2 to drop into or control circuit out of service.
Described a kind of resonant earthed system automatic tracking compensating device, is characterized in that: the controlled winding L of described arc suppression coil 2 is core inductances of material same with arc suppression coil L1.
Described a kind of resonant earthed system automatic tracking compensating device, it is characterized in that: described damping resistance short circuit loop comprises bidirectional triode thyristor SCR1, SCR2, damping resistance R1 is connected in parallel between the T1 pole of bidirectional triode thyristor SCR1 and T2 pole, also piezo-resistance RV5 is connected with between the T1 pole of bidirectional triode thyristor SCR1 and T2 pole, bidirectional triode thyristor SCR1 one of them control pole and between self T2 pole, be connected with the triggering current-limiting resistance R3 mutually connected, piezo-resistance RV1, bidirectional triode thyristor SCR2 another control pole and between self T1 pole, be connected with the triggering current-limiting resistance R4 mutually connected, piezo-resistance RV2, the T1 pole of bidirectional triode thyristor SCR2, T2 pole respectively with the T1 pole of bidirectional triode thyristor SCR1, T2 is extremely corresponding to be connected, and be connected with piezo-resistance RV6 between the T1 pole of bidirectional triode thyristor SCR2 and T2 pole, bidirectional triode thyristor SCR2 one of them control pole and between self T2 pole, be connected with the triggering current-limiting resistance R5 mutually connected, piezo-resistance RV3, bidirectional triode thyristor SCR2 another control pole and between self T1 pole, be connected with the triggering current-limiting resistance R6 mutually connected, piezo-resistance RV4.
Described a kind of resonant earthed system automatic tracking compensating device, it is characterized in that: the controlled winding L of described arc suppression coil 2 drops into or control circuit out of service comprises bidirectional triode thyristor SCR3, SCR4, the controlled winding L 2 of arc suppression coil is connected in parallel between the T1 pole of bidirectional triode thyristor SCR4 and T2 pole, the T1 pole of bidirectional triode thyristor SCR3, T2 pole respectively with the T1 pole of bidirectional triode thyristor SCR4, T2 is extremely corresponding to be connected, MCU is accessed to receive triggering signal by resistance R8 in the control pole of bidirectional triode thyristor SCR3, MCU is accessed to receive triggering signal by resistance R7 in the control pole of bidirectional triode thyristor SCR4.
A kind of resonant earthed system automatic tracking and compensating method, it is characterized in that: under system normal running (operation) conditions, now system is the same with normal resonant earthed system, damping resistance R1 according to arc suppression coil controlled winding L 2 lower end provides damping, prevents system resonance and suppresses neutral point voltage below 15% phase voltage; When intermittent ground connection occurs system, the offset current provided according to arc suppression coil L1, to realize arc extinguishing, prevents system resonance at the damping resistance R1 of arc suppression coil L1 lower end serial connection, and suppresses neutral point voltage to be no more than 15% phase voltage, to meet the requirement of extinguishing arc code; By controlling bidirectional triode thyristor SCR3, SCR4 realizes the input or out of service of the controlled winding of arc suppression coil, exits and the zero-sequence current of the fore-and-aft survey that puts into operation, offset current and neutral point voltage just can calculate the capacitance current of circuit in real time according to arc suppression coil controlled winding L 2., specifically comprise the following steps:
(1), system normally runs, and busbar voltage is normal, and MCU controller provides triggering signal, and control bidirectional triode thyristor SCR3, SCR4 conducting, arc suppression coil controlled winding L 2 is out of service;
(2), when needing the capacitance current measuring electrical network, MCU controller controls bidirectional triode thyristor SCR3, SCR4 open circuit, the controlled winding L 2 of arc suppression coil is put into operation, exits and the zero-sequence current of the fore-and-aft survey that puts into operation, offset current and neutral point voltage just can calculate the capacitance current of circuit in real time according to arc suppression coil controlled winding L 2;
(3), according to the capacitance current Ic recorded, regulate arc suppression coil to suitable gear by controlling loaded switch, suitable offset current is provided;
(4), when system generation single-phase earthing, the adjustment of locking loaded switch, the damping resistance R1 of short circuit arc suppression coil L1 series connection simultaneously, arc suppression coil L1 puts into operation and the electric current that affords redress, and reduces earth current, effectively can prevent arc reignition, after ground connection disappears, System recover is normal.
The present invention proposes a kind of resonant earthed system automatic tracking compensating device and method, by installing the controlled winding L 2 of arc suppression coil additional in arc suppression coil lower end, and the break-make of bidirectional triode thyristor SCR3, SCR4 is controlled by MCU controller, and then control the input or out of service of the controlled winding L of arc suppression coil 2, by the real-time measurement that the zero-sequence current of the input and front and back out of service that gather arc suppression coil controlled winding L 2, offset current, neutral point voltage realize electric network capacitance and current according to estimation algorithm, thus the dynamic tracking realized system and real-Time Compensation.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structured flowchart;
Fig. 2 is damping resistance short-circuit figure in the present invention;
Fig. 3 is that in the present invention, the controlled winding L of arc suppression coil 2 drops into or control circuit figure out of service.
Embodiment
As shown in Figure 1, a kind of resonant earthed system automatic tracking compensating device, comprise the grounding transformer S1 that resonant earthed system neutral point is provided, arc suppression coil L1, the controlled winding L 2 of arc suppression coil, MCU, the upper end of arc suppression coil L1 is connected with the neutral point of grounding transformer S1, arc suppression coil L1 lower end is connected with arc suppression coil controlled winding L 2 upper end, arc suppression coil controlled winding L 2 lower end is in series with damping resistance R1 successively, ground connection after Current Transmit, the voltage transformer pt measuring neutral point voltage is had access between the neutral point of arc suppression coil L1 and grounding transformer S1, voltage transformer pt, Current Transmit accesses MCU respectively, described MCU is by loaded switch K1 and arc suppression coil L1 control connection, described damping resistance R1 is parallel with damping resistance short circuit loop, the controlled winding L of arc suppression coil 2 is parallel with the controlled winding L of arc suppression coil 2 to drop into or control circuit out of service.
The controlled winding L of arc suppression coil 2 is core inductances of material same with arc suppression coil L1.
As shown in Figure 2, damping resistance short circuit loop comprises bidirectional triode thyristor SCR1, SCR2, damping resistance R1 is connected in parallel between the T1 pole of bidirectional triode thyristor SCR1 and T2 pole, also piezo-resistance RV5 is connected with between the T1 pole of bidirectional triode thyristor SCR1 and T2 pole, bidirectional triode thyristor SCR1 one of them control pole and between self T2 pole, be connected with the triggering current-limiting resistance R3 mutually connected, piezo-resistance RV1, bidirectional triode thyristor SCR2 another control pole and between self T1 pole, be connected with the triggering current-limiting resistance R4 mutually connected, piezo-resistance RV2, the T1 pole of bidirectional triode thyristor SCR2, T2 pole respectively with the T1 pole of bidirectional triode thyristor SCR1, T2 is extremely corresponding to be connected, and be connected with piezo-resistance RV6 between the T1 pole of bidirectional triode thyristor SCR2 and T2 pole, bidirectional triode thyristor SCR2 one of them control pole and between self T2 pole, be connected with the triggering current-limiting resistance R5 mutually connected, piezo-resistance RV3, bidirectional triode thyristor SCR2 another control pole and between self T1 pole, be connected with the triggering current-limiting resistance R6 mutually connected, piezo-resistance RV4.
As shown in Figure 3, the controlled winding L of arc suppression coil 2 drops into or control circuit out of service comprises bidirectional triode thyristor SCR3, SCR4, the controlled winding L 2 of arc suppression coil is connected in parallel between the T1 pole of bidirectional triode thyristor SCR4 and T2 pole, the T1 pole of bidirectional triode thyristor SCR3, T2 pole respectively with the T1 pole of bidirectional triode thyristor SCR4, T2 is extremely corresponding connects, MCU is accessed to receive triggering signal by resistance R8 in the control pole of bidirectional triode thyristor SCR3, and MCU is accessed to receive triggering signal by resistance R7 in the control pole of bidirectional triode thyristor SCR4.
A kind of resonant earthed system automatic tracking and compensating method, under system normal running (operation) conditions, now system is the same with normal resonant earthed system, and the damping resistance R1 according to arc suppression coil controlled winding L 2 lower end provides damping, prevents system resonance and suppresses neutral point voltage below 15% phase voltage; When intermittent ground connection occurs system, the offset current provided according to arc suppression coil L1, to realize arc extinguishing, prevents system resonance at the damping resistance R1 of arc suppression coil L1 lower end serial connection, and suppresses neutral point voltage to be no more than 15% phase voltage, to meet the requirement of extinguishing arc code; By controlling bidirectional triode thyristor SCR3, SCR4 realizes the input or out of service of the controlled winding of arc suppression coil, exits and the zero-sequence current of the fore-and-aft survey that puts into operation, offset current and neutral point voltage just can calculate the capacitance current of circuit in real time according to arc suppression coil controlled winding L 2., specifically comprise the following steps:
(1), system normally runs, and busbar voltage is normal, and MCU controller provides triggering signal, and control bidirectional triode thyristor SCR3, SCR4 conducting, arc suppression coil controlled winding L 2 is out of service;
(2), when needing the capacitance current measuring electrical network, MCU controller controls bidirectional triode thyristor SCR3, SCR4 open circuit, the controlled winding L 2 of arc suppression coil is put into operation, exits and the zero-sequence current of the fore-and-aft survey that puts into operation, offset current and neutral point voltage just can calculate the capacitance current of circuit in real time according to arc suppression coil controlled winding L 2;
(3), according to the capacitance current Ic recorded, regulate arc suppression coil to suitable gear by controlling loaded switch, suitable offset current is provided;
(4), when system generation single-phase earthing, the adjustment of locking loaded switch, the damping resistance R1 of short circuit arc suppression coil L1 series connection simultaneously, arc suppression coil L1 puts into operation and the electric current that affords redress, and reduces earth current, effectively can prevent arc reignition, after ground connection disappears, System recover is normal.
Claims (5)
1. a resonant earthed system automatic tracking compensating device, it is characterized in that: comprise the grounding transformer S1 that resonant earthed system neutral point is provided, arc suppression coil L1, the controlled winding L 2 of arc suppression coil, MCU, the upper end of arc suppression coil L1 is connected with the neutral point of grounding transformer S1, arc suppression coil L1 lower end is connected with arc suppression coil controlled winding L 2 upper end, arc suppression coil controlled winding L 2 lower end is in series with damping resistance R1 successively, ground connection after Current Transmit, the voltage transformer pt measuring neutral point voltage is had access between the neutral point of arc suppression coil L1 and grounding transformer S1, voltage transformer pt, Current Transmit accesses MCU respectively, described MCU regulates arc suppression coil L1 to suitable gear by regulating loaded switch, described damping resistance R1 is parallel with damping resistance short circuit loop, the controlled winding L of arc suppression coil 2 is parallel with the controlled winding L of arc suppression coil 2 to drop into or control circuit out of service.
2. a kind of resonant earthed system automatic tracking compensating device according to claim 1, is characterized in that: the controlled winding L of described arc suppression coil 2 is core inductances of material same with arc suppression coil L1.
3. a kind of resonant earthed system automatic tracking compensating device according to claim 1, it is characterized in that: described damping resistance short circuit loop comprises bidirectional triode thyristor SCR1, SCR2, damping resistance R1 is connected in parallel between the T1 pole of bidirectional triode thyristor SCR1 and T2 pole, also piezo-resistance RV5 is connected with between the T1 pole of bidirectional triode thyristor SCR1 and T2 pole, bidirectional triode thyristor SCR1 one of them control pole and between self T2 pole, be connected with the triggering current-limiting resistance R3 mutually connected, piezo-resistance RV1, bidirectional triode thyristor SCR2 another control pole and between self T1 pole, be connected with the triggering current-limiting resistance R4 mutually connected, piezo-resistance RV2, the T1 pole of bidirectional triode thyristor SCR2, T2 pole respectively with the T1 pole of bidirectional triode thyristor SCR1, T2 is extremely corresponding to be connected, and be connected with piezo-resistance RV6 between the T1 pole of bidirectional triode thyristor SCR2 and T2 pole, bidirectional triode thyristor SCR2 one of them control pole and between self T2 pole, be connected with the triggering current-limiting resistance R5 mutually connected, piezo-resistance RV3, bidirectional triode thyristor SCR2 another control pole and between self T1 pole, be connected with the triggering current-limiting resistance R6 mutually connected, piezo-resistance RV4.
4. a kind of resonant earthed system automatic tracking compensating device according to claim 1, it is characterized in that: the controlled winding L of described arc suppression coil 2 drops into or control circuit out of service comprises bidirectional triode thyristor SCR3, SCR4, the controlled winding L 2 of arc suppression coil is connected in parallel between the T1 pole of bidirectional triode thyristor SCR4 and T2 pole, the T1 pole of bidirectional triode thyristor SCR3, T2 pole respectively with the T1 pole of bidirectional triode thyristor SCR4, T2 is extremely corresponding to be connected, MCU is accessed to receive triggering signal by resistance R8 in the control pole of bidirectional triode thyristor SCR3, MCU is accessed to receive triggering signal by resistance R7 in the control pole of bidirectional triode thyristor SCR4.
5. the resonant earthed system automatic tracking and compensating method based on device described in claim 1, it is characterized in that: under system normal running (operation) conditions, now system is the same with normal resonant earthed system, damping resistance R1 according to arc suppression coil controlled winding L 2 lower end provides damping, prevents system resonance and suppresses neutral point voltage below 15% phase voltage; When intermittent ground connection occurs system, the offset current provided according to arc suppression coil L1, to realize arc extinguishing, prevents system resonance at the damping resistance R1 of arc suppression coil L1 lower end serial connection, and suppresses neutral point voltage to be no more than 15% phase voltage, to meet the requirement of extinguishing arc code; By controlling bidirectional triode thyristor SCR3, SCR4 realizes the input or out of service of the controlled winding of arc suppression coil, to exit according to arc suppression coil controlled winding L 2 and the zero-sequence current of the fore-and-aft survey that puts into operation, offset current and neutral point voltage just can calculate the capacitance current of circuit in real time, specifically comprise the following steps:
(1), system normally runs, and busbar voltage is normal, and MCU controller provides triggering signal, and control bidirectional triode thyristor SCR3, SCR4 conducting, arc suppression coil controlled winding L 2 is out of service;
(2), when needing the capacitance current measuring electrical network, MCU controller controls bidirectional triode thyristor SCR3, SCR4 open circuit, the controlled winding L 2 of arc suppression coil is put into operation, exits and the zero-sequence current of the fore-and-aft survey that puts into operation, offset current and neutral point voltage just can calculate the capacitance current of circuit in real time according to arc suppression coil controlled winding L 2;
(3), according to the capacitance current Ic recorded, regulate arc suppression coil to suitable gear by controlling loaded switch, suitable offset current is provided;
(4), when system generation single-phase earthing, the adjustment of locking loaded switch, the damping resistance R1 of short circuit arc suppression coil L1 series connection simultaneously, arc suppression coil L1 puts into operation and the electric current that affords redress, and reduces earth current, effectively can prevent arc reignition, after ground connection disappears, System recover is normal.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106208106A (en) * | 2016-08-31 | 2016-12-07 | 丹东德元电力电器有限公司 | A kind of paralleling compensating device based on compensation/current-limiting reactor |
| CN107796989A (en) * | 2017-10-23 | 2018-03-13 | 国网山东省电力公司济宁供电公司 | A kind of capacitance current of distribution network On-line Measuring Method |
| CN108964001A (en) * | 2018-08-24 | 2018-12-07 | 国网河北省电力有限公司电力科学研究院 | Arc suppression coil of power distribution network tuning methods, terminal device and system |
| CN109596932A (en) * | 2018-11-08 | 2019-04-09 | 杭州求是电力技术有限公司 | Resonant earthed system zero sequence parameter measurement and ground voltage control method based on virtual ground principle |
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| CN111786373A (en) * | 2020-06-30 | 2020-10-16 | 徐华 | Arc suppression coil control system |
| EP3605768A4 (en) * | 2017-07-06 | 2020-12-30 | Changsha University of Science and Technology | Safe processing method for active voltage reduction of ground fault phase of non-effective grounding system |
| CN112909911A (en) * | 2021-01-18 | 2021-06-04 | 长沙理工大学 | Single-phase earth fault current full-compensation device and method |
| CN113097970A (en) * | 2021-05-24 | 2021-07-09 | 广东科瑞德电气科技有限公司 | Novel distribution safety power consumption device |
| CN116632770A (en) * | 2023-01-09 | 2023-08-22 | 国网陕西省电力有限公司电力科学研究院 | Series resonance judgment and suppression method and device for automatic tracking compensation arc suppression coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1272707A (en) * | 2000-05-23 | 2000-11-08 | 上海思源电气有限公司 | Total-state compensating arc-extinguishing coil automatic tuning device |
| CN2406403Y (en) * | 2000-01-04 | 2000-11-15 | 上海思源电气有限公司 | Arc-extinguishing coil with limiting function to series resonance over-voltage |
| CN103384066A (en) * | 2013-06-25 | 2013-11-06 | 合肥天海电气技术有限公司 | Automatic tracking compensation system of turns adjusting type arc suppression coil |
| CN103532125A (en) * | 2013-09-09 | 2014-01-22 | 合肥天海电气技术有限公司 | Secondary damping method for shortening response time of arc suppression coil |
| CN203895978U (en) * | 2014-05-22 | 2014-10-22 | 姜谷兵 | Neutral ground protection system used for medium-voltage power grid |
-
2015
- 2015-06-19 CN CN201510344682.2A patent/CN104901299A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406403Y (en) * | 2000-01-04 | 2000-11-15 | 上海思源电气有限公司 | Arc-extinguishing coil with limiting function to series resonance over-voltage |
| CN1272707A (en) * | 2000-05-23 | 2000-11-08 | 上海思源电气有限公司 | Total-state compensating arc-extinguishing coil automatic tuning device |
| CN103384066A (en) * | 2013-06-25 | 2013-11-06 | 合肥天海电气技术有限公司 | Automatic tracking compensation system of turns adjusting type arc suppression coil |
| CN103532125A (en) * | 2013-09-09 | 2014-01-22 | 合肥天海电气技术有限公司 | Secondary damping method for shortening response time of arc suppression coil |
| CN203895978U (en) * | 2014-05-22 | 2014-10-22 | 姜谷兵 | Neutral ground protection system used for medium-voltage power grid |
Non-Patent Citations (1)
| Title |
|---|
| 张方军等: "配电系统自动跟踪补偿装置的研究", 《工矿自动化》 * |
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| EP3605768A4 (en) * | 2017-07-06 | 2020-12-30 | Changsha University of Science and Technology | Safe processing method for active voltage reduction of ground fault phase of non-effective grounding system |
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| CN109596932A (en) * | 2018-11-08 | 2019-04-09 | 杭州求是电力技术有限公司 | Resonant earthed system zero sequence parameter measurement and ground voltage control method based on virtual ground principle |
| CN109596932B (en) * | 2018-11-08 | 2020-10-16 | 杭州求是电力技术有限公司 | Zero sequence parameter measurement and grounding voltage control method for resonance grounding system |
| CN109873413A (en) * | 2019-04-02 | 2019-06-11 | 云南电网有限责任公司电力科学研究院 | A kind of method that earth current is fully compensated in controllable current source cooperation arc suppression coil |
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| CN111786373A (en) * | 2020-06-30 | 2020-10-16 | 徐华 | Arc suppression coil control system |
| CN112909911A (en) * | 2021-01-18 | 2021-06-04 | 长沙理工大学 | Single-phase earth fault current full-compensation device and method |
| CN112909911B (en) * | 2021-01-18 | 2024-03-15 | 长沙理工大学 | Single-phase grounding fault current full compensation device and method |
| CN113097970A (en) * | 2021-05-24 | 2021-07-09 | 广东科瑞德电气科技有限公司 | Novel distribution safety power consumption device |
| CN116632770A (en) * | 2023-01-09 | 2023-08-22 | 国网陕西省电力有限公司电力科学研究院 | Series resonance judgment and suppression method and device for automatic tracking compensation arc suppression coil |
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Application publication date: 20150909 |