CN203673279U - High-voltage integrated breaker controller - Google Patents
High-voltage integrated breaker controller Download PDFInfo
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- CN203673279U CN203673279U CN201420019583.8U CN201420019583U CN203673279U CN 203673279 U CN203673279 U CN 203673279U CN 201420019583 U CN201420019583 U CN 201420019583U CN 203673279 U CN203673279 U CN 203673279U
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Abstract
The utility model discloses a high-voltage integrated breaker controller. The high-voltage integrated breaker controller comprises a controller main body, a proximitor and a stroke detection circuit, wherein the controller main body comprises a first microprocessor circuit and a switching-closing control circuit and is connected with a power source, a distribution voltage transformer, a current transformer loaded by a breaker, and a switching-closing operation assembly disposed in the breaker through electrical connecting lines; the power source, the distribution voltage transformer, the current transformer and the switching-closing operation assembly are arranged outside the controller main body; the controller main body is connected with the proximitor through a communication channel; the stroke detection circuit is connected with the first microprocessor circuit; the first microprocessor circuit is connected with the switching-closing control circuit; and the controller main body is connected with the switching-closing operation assembly of the breaker. The high-voltage integrated breaker controller provided by the utility model is complete in function, strong in resistance to electromagnetic interference, reliable in protection during short-circuit faults of a load, and accurate in control of the breaker.
Description
Technical field
The utility model relates to power technology field, is specially the integrated breaker controller of a kind of high pressure.
Background technology
The at present domestic control module that is used as distribution or electric motor protecting in industry spot, has reached international the nineties level substantially, can process in real time various signals, realizes kinds of protect characteristic and numerous subsidiary functions.Isolating switch is one of protective device main in distribution system, is also the protective device that function is the most perfect.In recent years, the miniaturization of isolating switch has become a kind of trend, but what is more important, in order to adapt to the growth requirement of intelligent grid, the intelligent level of isolating switch is constantly upgraded.As the intelligent controller of isolating switch brain, its function is more and more abundanter, becomes increasingly complex.Particularly defencive function, has not only realized traditional three section protection and earth-fault protection, has also realized current imbalance protection, needs with current protection, has crossed the multi-protective functions such as low-voltage protection, reverse-power protection, can meet well the application of various occasions.
Existing breaker controller major defect is that structural design is unreasonable, circuit design is also unreasonable, the integrated result of isolating switch is undesirable, have anti-strong electromagnetic ability, the large electric current producing in the time that load end is short-circuited fault may make intelligent protection function lose efficacy and expand fault coverage; Function is incomplete, is applied to after isolating switch the poor practicability of isolating switch; Automatically control performance imperfection, can not accurately control the moving contact motion of isolating switch, therefore can not realize electric current speed and cut phase selection separating brake and phase selection reclosing, cause electric current speed cutting lock, reclosing itself to cause serious impact, harm to electrical network, load and equipment.
Therefore, on market, lack a kind of multiple functional, anti-electromagnetic interference capability strong, in the time there is load short circuits fault reliably protecting, and to the killer switch moving contact integrated breaker controller of high pressure that can accurately control that moves.
Utility model content
The purpose of this utility model be to provide a kind of multiple functional, anti-electromagnetic interference capability strong, in the time there is load short circuits fault reliably protecting, and to the killer switch moving contact integrated breaker controller of high pressure that can accurately control that moves.
For realizing above-mentioned technical purpose, the technical scheme that the utility model provides is: the integrated breaker controller of a kind of high pressure, comprise controller main body, fore-lying device and stroke detection circuit, described controller main body comprises first microprocessor circuit and divide-shut brake control circuit;
Described controller main body is connected by the current transformer of the electric connection line power supply outside with it, distribution voltage mutual inductor, isolating switch load and the breaking-closing operating assembly being arranged in isolating switch;
Described controller main body is connected with fore-lying device by communication port; Described stroke detection circuit is connected with first microprocessor circuit; Described first microprocessor circuit is connected with divide-shut brake control circuit; Described controller main body is connected with the breaking-closing operating assembly of isolating switch.
Further, described controller main body also comprise three-phase alternating voltage phase detecting circuit, electric current pre-process circuit, electric current back-up protection circuit, working power circuit, working power circuit for subsequent use and or door character circuit;
Described three-phase alternating voltage phase detecting circuit, electric current pretreater circuit and electric current back-up protection circuit are connected with first microprocessor circuit respectively by electric connection line;
Described electric current pre-process circuit is connected with described breaking-closing operating assembly by divide-shut brake control circuit via first microprocessor circuit;
Described electric current back-up protection circuit is connected with described breaking-closing operating assembly by divide-shut brake control circuit;
The power supply of described outside is connected with working power circuit, and distribution voltage mutual inductor is connected with working power circuit for subsequent use; Described working power circuit and working power circuit for subsequent use by or a door character circuit be connected with described micro-processor interface circuit;
The input end of described three-phase alternating voltage phase detecting circuit is connected with outside distribution voltage mutual inductor, and output terminal is connected with microcontroller circuit;
Described electric current pre-process circuit is connected with current transformer respectively with electric current back-up protection circuit.
Further, described fore-lying device is also provided with the second microcontroller circuit and the second electrical isolation device; In described controller main body, be provided with the first electrical isolation device;
Described communication port is connected with first microprocessor circuit by the first electrical isolation device; Described communication port is connected with the second microcontroller circuit by the second electrical isolation device.
Further, described fore-lying device also comprises fore-lying device front panel and fore-lying device rear panel;
Described fore-lying device is with being provided with liquid crystal touch screen, function pressing plate, human body infrared induction pick-up, breaking-closing operating button, a distant place and body operation switch, more than one pilot lamp and the first Temperature Humidity Sensor on front panel; Described fore-lying device is with being provided with the second Temperature Humidity Sensor on rear panel;
Described liquid crystal touch screen, function pressing plate, human body infrared induction pick-up, breaking-closing operating button, a distant place are connected with the second microcontroller circuit respectively with body operation switch, more than one pilot lamp, the first Temperature Humidity Sensor, the second Temperature Humidity Sensor.
Further, on described fore-lying device, be also provided with GPRS communication module and RF radio-frequency communication module;
Described GPRS communication module is connected with the second microcontroller circuit respectively with RF radio-frequency communication module.
Further, described breaking-closing operating assembly comprises the first opening and closing state contact, the second opening and closing state contact, switching winding, closing coil, divide-shut brake power supply, closes a floodgate and control outlet device, separating brake control outlet device, divide-shut brake control driving circuit, the first anti-trip relay and the second anti-trip relay;
Described divide-shut brake control driving circuit, separating brake control outlet device, the second anti-trip relay, the first opening and closing state contact, switching winding and divide-shut brake electric power generating composition sub-gate circuit;
Described divide-shut brake control driving circuit is connected with the control end of separating brake control outlet device; Described separating brake control outlet device, the second anti-trip relay, the first opening and closing state contact, switching winding are connected successively with divide-shut brake power supply;
Described divide-shut brake control driving circuit, the control of closing a floodgate export device, the first anti-trip relay, the second opening and closing state contact, closing coil and divide-shut brake electric power generating composition closing circuit;
Described divide-shut brake control driving circuit is connected with the control end of the control outlet device that closes a floodgate; Described combined floodgate control outlet device, the first anti-trip relay, the second opening and closing state contact, closing coil are connected successively with divide-shut brake power supply;
Close a floodgate control outlet device and separating brake control outlet device for can turn-off power electronic devices.
Further, described power electronic devices is IGBT pipe or metal-oxide-semiconductor or large power triode or turn-off thyristor;
On described closing circuit, be provided with the first break-make testing circuit, described the first break-make testing circuit is connected with the first photoelectric isolating device;
On described sub-gate circuit, be provided with the second break-make testing circuit, described the second break-make testing circuit is connected with the second photoelectric isolating device;
The output terminal of described the first photoelectric isolating device and the second photoelectric isolating device is connected with first microprocessor circuit respectively.
Further, described first microprocessor circuit is sent to successively divide-shut brake control outlet by separating brake command signal and drives interface circuit, separating brake control outlet device, switching winding and the first opening and closing state contact; Separating brake command signal is sent to divide-shut brake control circuit and first microprocessor circuit by described the first opening and closing state contact;
First microprocessor circuit is sent to successively divide-shut brake control outlet by reclosing command signal and drives interface circuit, closes a floodgate and control outlet device, closing coil and the second opening and closing state contact; Reclosing command signal is sent to divide-shut brake control circuit and first microprocessor circuit by described the second opening and closing state contact.
Further, described breaking-closing operating assembly also comprises the current detection circuit for monitoring divide-shut brake process switching winding or closing coil current value;
Described current detection circuit is arranged between the point and divide-shut brake power supply of sub-gate circuit and closing circuit;
Described current detection circuit is connected with described first microprocessor circuit.
Further, described current transformer is sent to first microprocessor circuit by the current signal detecting through electric current pre-process circuit, and separating brake command signal is sent to successively divide-shut brake control circuit, breaking-closing operating assembly and switching winding by described first microprocessor circuit.
Further, described electric current back-up protection circuit comprises the first potentiometer, the second potentiometer, the 3rd potentiometer, the first photoelectric isolating device, the second photoelectric isolating device, the 3rd photoelectric isolating device, working power and current testing web member;
Described the first photoelectric isolating device is connected with the current transformer of the load end of isolating switch via the first potentiometer; Described the second photoelectric isolating device is connected with the current transformer of the load end of isolating switch via the second potentiometer; Described photoelectric isolating device is connected with the current transformer of the load end of isolating switch via the 3rd potentiometer;
Described the first potentiometer, the second potentiometer, the 3rd potentiometer are connected with current testing web member respectively;
The output terminal of described the first photoelectric isolating device, the second photoelectric isolating device, the 3rd photoelectric isolating device is connected with working power, first microprocessor circuit and divide-shut brake control circuit respectively.
Further, described controller main body is outside equipped with electromagnetic screen and electric connection line,
Described electromagnetic screen comprises all around panel, front panel, electromagnetic screen rear panel for electromagnetic screen; Described electromagnetic screen is connected by fixture with panel all around respectively with front panel and electromagnetic screen rear panel;
Described all around panel, electromagnetic screen are double-deck or double-deck above sheet metal with front panel and electromagnetic screen rear panel;
On described electromagnetic screen, be provided with antidetonation web member and wiring board;
Described wiring board is motherboard and plate; On described motherboard and plate, be provided with connector; Described plate is suitable by connector and motherboard; Described electromagnetic screen is with being provided with cable hole on rear panel, and described electric connection line is directly connected with motherboard after by cable hole.
Further, described sheet metal is double-deck, and internal layer is aluminium sheet, and skin is iron plate;
In described divide-shut brake power supply, be provided with capacitor;
Described electric connection line is the cable with metal screen layer, and the screen layer of described cable is connected with electromagnetic screen via motherboard ground plane.
The electric current back-up protection circuit of the integrated breaker controller of a kind of high pressure of the present utility model, described electric current back-up protection circuit comprises the first potentiometer, the second potentiometer, the 3rd potentiometer, the first photoelectric isolating device, the second photoelectric isolating device, the 3rd photoelectric isolating device, working power and current testing web member;
Described the first photoelectric isolating device is connected with the current transformer of the load end of isolating switch via the first potentiometer; Described the second photoelectric isolating device is connected with the current transformer of the load end of isolating switch via the second potentiometer; Described photoelectric isolating device is connected with the current transformer of the load end of isolating switch via the 3rd potentiometer;
Described the first potentiometer, the second potentiometer, the 3rd potentiometer are connected with current testing web member respectively;
Described working power, first microprocessor circuit and divide-shut brake control circuit are connected with the output terminal of the first photoelectric isolating device, the second photoelectric isolating device, the 3rd photoelectric isolating device respectively.
Further, the A utmost point of described the first photoelectric isolating device is connected with the A end of the current transformer of the load end of breaking-closing operating assembly via the first potentiometer, and the K utmost point of described the first photoelectric isolating device is connected with the N of described current transformer end;
The A utmost point of described the second photoelectric isolating device is connected with the B end of the load end current transformer of isolating switch via the second potentiometer, and the K utmost point of described the second photoelectric isolating device is connected with the N of described current transformer end;
The A utmost point of described the 3rd photoelectric isolating device is connected with the C end of the load end current transformer of isolating switch via the 3rd potentiometer, and the K utmost point of described the 3rd photoelectric isolating device is connected with the N of described current transformer end.
The beneficial effects of the utility model: the utility model is simple in structure, easy to use, multiple functional, anti-electromagnetic interference capability is strong, in the time there is load short circuits fault reliably protecting, and can accurately control the switch movable contact motion of isolating switch.The isolating switch recording according to the switch movable contact displacement detecting circuit of isolating switch divides, closing time, control killer switch divides, close a floodgate, killer switch is divided, the time point closing a floodgate is just in time at the zero crossing of short trouble cross streams voltage, realize current mode emergency protection phase selection separating brake and Fault Phase Selection reclosing, compared with prior art, greatly reduce current mode fault separating brake and reclosing to electrical network, the serious impact that load and equipment cause itself and harm, breaker controller is realized the main circuit parts on-line monitoring of isolating switch, find ahead of time fault, process in time, avoid the generation of power grid accident.
Brief description of the drawings
Fig. 1 is the generalized schematic of the utility model circuit;
Fig. 2 is the schematic diagram of breaker circuit of the present utility model;
Fig. 3 is the schematic diagram of electric current back-up protection circuit of the present utility model;
Fig. 4 is the structural representation of shell of the present utility model;
Fig. 5 is the infrared induction detection circuit on fore-lying device of the present utility model;
Fig. 6 is the optical fiber communication receiving circuit on fore-lying device of the present utility model;
Fig. 7 is the optical fiber communication transtation mission circuit on fore-lying device of the present utility model;
Wherein: 1 controller body; 2 fore-lying devices; 3 first microprocessor circuit; 4 divide-shut brake control circuits; 5 stroke detection circuit; 6 first electrical isolation circuit; 7 electric current back-up protection circuit; 8 working power circuits for subsequent use; 9 working power circuits; 10 breaking-closing operating assemblies; 11 first opening and closing state contacts; 12 switching windings; 13 closing coils; 14 or door character circuit; 15 power supplys; 16 distribution voltage mutual inductors; 17 three-phase alternating voltage phase detecting circuits; 18 second microcontroller circuits; 19 second electrical isolation circuit; 20 liquid crystal touch screens; 21 function pressing plates; 22 human body infrared induction pick-ups; 23 first Temperature Humidity Sensors; 24 current transformers; 25 electric current pretreater circuit; 26 close a floodgate controls outlet device; 27 separating brake control outlet devices; 28 first anti-trip relay; 29 second anti-trip relay; 30 current detection circuits; 31 divide-shut brake control driving circuits; 32 first photoelectric isolating devices; 33 second photoelectric isolating devices; 34 first break-make testing circuits; 35 second break-make testing circuits; 36 first potentiometers; 37 second potentiometers; 38 the 3rd potentiometers; 39 first photoelectric isolating devices; 40 second photoelectric isolating devices; 41 the 3rd photoelectric isolating devices; 42 divide-shut brake power supplys; 43 current testing web members; 44 electromagnetic screen front panels; 45 electromagnetic screen rear panels; 46 iron plates; 47 aluminium sheets; 48 antidetonation web members; 49 motherboards; 50 panels all around; 51 connectors; 52 cables; 53 communication ports; 54 second Temperature Humidity Sensors; 55GPRS communication module; 56RF radio-frequency communication module; 57 points; 58 plates; 59 working powers; 60 second opening and closing state contacts; 61 second filtering circuits; 62 feedback circuits; 63 signal processing circuits; 64 output circuits; 65 optical fiber Receivers; 66 first filtering circuits; 67 first amplifying circuits; 68 first signal modulate circuits; 69 first central processing unit communication ports; 70 second central processing unit communication ports; 71 second amplifying circuits; 72 secondary signal modulate circuits; 73 driving circuits; 74 optical fiber emitting heads.
Embodiment
In order to illustrate the technical solution of the utility model and technical purpose, below in conjunction with the drawings and the specific embodiments, the utility model is described further.
Embodiment 1
As shown in Figures 1 to 4, the integrated breaker controller of a kind of high pressure of the present utility model, comprises controller main body 1, fore-lying device 2 and stroke detection circuit 5, and described controller main body 1 comprises first microprocessor circuit 3 and divide-shut brake control circuit 4;
Described controller main body 1 is connected by the current transformer 24 of the electric connection line power supply 15 outside with it, distribution voltage mutual inductor 16, isolating switch load and the breaking-closing operating assembly 10 being arranged in isolating switch;
Described controller main body 1 is connected with fore-lying device 2 by communication port 53; Described stroke detection circuit 5 is connected with first microprocessor circuit 3; Described first microprocessor circuit 3 is connected with divide-shut brake control circuit 4; Described controller main body 1 is connected with the breaking-closing operating assembly 10 of isolating switch.Described controller main body 1 packs isolating switch into, short with the line of circuit breaker electric connecting line, strong interference immunity, fore-lying device 2 is loaded on safety and is convenient to and observes, man-machine interface is carried out in the place of operation, stroke detection circuit 5 is loaded on the moving contact driving stem of killer switch, for monitoring the mechanical motion parameter opening circuit, electrical isolation circuit, shielded cable, the measures such as screening can are used for strengthening Electro Magnetic Compatibility, overcome the poor anti jamming capability existing in existing product, cause intelligent protection function in the time that load end is short-circuited fault to lose efficacy and the problem of generation power grid security accident.
Described controller main body 1 also comprise three-phase alternating voltage phase detecting circuit 17, stroke detection circuit 5, electric current pre-process circuit 25, electric current back-up protection circuit 7, working power circuit 9, working power circuit for subsequent use 8 and or door character circuit 14; An or working power that character circuit 14 is exported as circuit in controller main body 1; working power circuit 8 for subsequent use and working power circuit 9 all when normal or one of them fault or a door character circuit 14 all have output; thereby the power supply reliability of controller main body 1 is improved; as being 99% originally, bring up to 99.99%.
Described three-phase alternating voltage phase detecting circuit 17, electric current pretreater circuit 25, stroke detection circuit 5 and electric current back-up protection circuit 7 are connected with first microprocessor circuit 3 respectively by electric connection line;
Described electric current pre-process circuit 25 is connected with described breaking-closing operating assembly 10 by divide-shut brake control circuit 4 via first microprocessor circuit 3;
Described electric current back-up protection circuit 7 is connected with described breaking-closing operating assembly 10 by divide-shut brake control circuit 4;
The power supply 15 of described outside is connected with working power circuit 9; Distribution voltage mutual inductor 16 is connected with working power circuit 8 for subsequent use;
Described working power circuit 9 and working power circuit 8 for subsequent use by or a door character circuit 14 be connected with described micro-processor interface circuit 3;
The input end of described three-phase alternating voltage phase detecting circuit 17 is connected with outside distribution voltage mutual inductor 16, and output terminal is connected with microcontroller circuit 3;
Described electric current pre-process circuit 25 is connected with current transformer 24 respectively with electric current back-up protection circuit 7.
The branch wire time of the isolating switch that the stroke detection circuit 5 of isolating switch records; control the switch divide-shut brake of isolating switch; the zero crossing of the time point that makes killer switch divide-shut brake in short trouble cross streams voltage; realize current mode emergency protection phase selection separating brake and Fault Phase Selection reclosing; circuit is simple, algorithm is simple, greatly reduces serious impact, harm that current mode fault separating brake and reclosing itself cause electrical network, load and equipment.
Electric current back-up protection circuit 7 is made up of non intelligent element, strong interference immunity, and the interference of ultrahigh current while not being subject to fault, thereby greatly improved the reliability of circuit protection.
Described fore-lying device 2 is also provided with the second microcontroller circuit 18 and the second electrical isolation device 19; In described controller main body 1, be provided with the first electrical isolation device 6;
Described communication port 53 is connected with first microprocessor circuit 3 by the first electrical isolation device 6; Described communication port 53 is connected with the second microcontroller circuit 18 by the second electrical isolation device 19.
Described fore-lying device 2 also comprises fore-lying device front panel and fore-lying device rear panel;
Described fore-lying device is with being provided with liquid crystal touch screen 20, function pressing plate 21, human body infrared induction pick-up 22, breaking-closing operating button, a distant place and body operation switch, more than one pilot lamp and the first Temperature Humidity Sensor 23 on front panel; Described fore-lying device is with being provided with the second Temperature Humidity Sensor 54 on rear panel;
Described liquid crystal touch screen 20, function pressing plate 21, human body infrared induction pick-up 22, breaking-closing operating button, a distant place are connected with the second microcontroller circuit 18 respectively with body operation switch, more than one pilot lamp, the first Temperature Humidity Sensor 23, the second Temperature Humidity Sensor 54.
On described fore-lying device 2, be also provided with GPRS communication module 55 and RF radio-frequency communication module 56;
Described GPRS communication module 55 is connected with the second microcontroller circuit 18 respectively with RF radio-frequency communication module 56; Described GPRS communication module 55 has realized the radio remote square tube reason of product, online with the set of equipments with RF radio communication function when RF radio-frequency communication module 56 is applied for product, saves a lot of switching devices.Overcome fore-lying device 2 because of the short integrity problem of liquid crystal touch screen 20 mission lives.
Fore-lying device 2 is generally installed on the cabinet face of switch cubicle, be installed on the first Temperature Humidity Sensor 23 of fore-lying device 2 front panels for monitoring cabinet external environment, be installed on 54 of second Temperature Humidity Sensors of fore-lying device 2 rear panels for monitoring environment in cabinet, adjunct circuit is few, the quantity of set of equipments while having reduced product application.Liquid crystal touch screen 20 is for information demonstration and setting operation keyboard, and function pressing plate 21 arranges or cancel the critical function of fore-lying device 2 intuitively and easily for scene, avoid occurring mistake, produces serious consequence.
The functional module of fore-lying device 2 comprises information display function module, controls functional module, statistical function module and diagnostic function module.Described information display function module comprises:
(1) electric current, voltage, power, the electric parameters information such as power factor show; (2) temperature, humidity, the position of the switch, the non-electric quantity information such as energy storage position show; (3) contact temperature shows; (4) primary connection figure state shows; (5) voltage, electric current, power, power factor curve shows; (6) protection information shows and warning message demonstration;
Described control functional module comprises:
(1) local a, distant place is controlled; (2) handcart advance and retreat are controlled; (3) control divides, closes a floodgate; (4) door lock control: the electromagnetic lock of switch board door; (5) heating, fan control: automatically carry out thermostatic control in cabinet according to the temperature range of setting;
Described statistical function module comprises:
(1) close a floodgate, separating brake event statistics: record point, closing moment, coil current, point, closing time, point, closing speed, point, closing frequencies; (2) handcart advance and retreat event statistics: record the handcart operation moment, run duration, flow currents, times of exercise; (3) cutter divide, combined floodgate event statistics: record ground cutter action moment, actuation time, current of electric, movement velocity, times of exercise; (4) alert event statistics: with limit value moment and the value at that time of reporting to the police that exceed standard of comparing is set; (5) power consumption statistics: electric energy metrical function, is divided into peak, paddy, section metering at ordinary times;
Described diagnostic function module comprises:
(1) circuit breaker characteristic diagnosis: judge that whether circuit breaker characteristic is normal; (2) complex automatic system diagnosis: judge that whether breaker controller function is normal; (3) complete equipment diagnosis: judge that in cabinet, whether measure and control device is normal; (4) distribution and load diagnosis: judge that whether loop is normal; (5) divide, combined floodgate event record ripple: record point, combined floodgate immediate current, voltage, moving contact stroke curve;
Described parameter setting function comprises:
(1) system parameter setting: system clock is set, communication protocol, speed etc.; (2) complete parameter setting: humiture warning limit value is set; (3) Protection parameters setting: overvoltage is set, under-voltage, quick-break, overcurrent, the parameters such as pressing plate; (4) alarm parameters setting: the electrical specification that sets up an organization warning limit value; (5) interlocked operation parameter arranges: the interlocked operation logical relation that isolating switch is set.
As shown in Figure 5, be the infrared induction detection circuit on fore-lying device 2 of the present utility model, fore-lying device 2 perception human body signals, open liquid crystal display; for operator, people leaves rear output circuit 64 and closes, and reduces power consumption; saves energy, protection LCDs, increases the service life.Human body infrared induction pick-up 22 converts electric signal to after receiving human body infrared ripple signal, after the second filtering circuit 61 filtering, send signal processing circuit 63 to process, in order to improve the stability of system, increase feedback circuit 62, receive only the signal of particular range wavelength, finally export one by output circuit 64 and drive signal, connect the power supply of liquid crystal touch screen 20.
As shown in Figure 6 and Figure 7, the upper optical fiber communication circuit of fore-lying device 2 comprises following ingredient:
Optical fiber communication receiving circuit:
Optical fiber communication transtation mission circuit:
The second central processing unit communication port 70 is transferred to secondary signal modulate circuit 72 by transmitted signal after the second amplifying circuit 71 amplifies, the signal after conditioning is sent overdrive circuit 73 by secondary signal modulate circuit 72, driving circuit 73 converts voltage signal to current signal, convert the electrical signal to light signal through optical fiber emitting head 74 again, transmit through optical fiber cable.
Described breaking-closing operating assembly 10 comprises the first opening and closing state contact 11, the second opening and closing state contact 60, switching winding 12, closing coil 13, divide-shut brake power supply 42, closes a floodgate and control outlet device 26, separating brake control outlet device 27, divide-shut brake control driving circuit 31, the first anti-trip relay 28 and the second anti-trip relay 29;
Described divide-shut brake control driving circuit 31, separating brake control outlet device 27, the second anti-trip relay 29, the first opening and closing state contact 11, switching winding 12 form sub-gate circuit with divide-shut brake power supply 42;
Described divide-shut brake control driving circuit 31 is connected with the control end of separating brake control outlet device 27; Described separating brake control outlet device 27, the second anti-trip relay 29, the first opening and closing state contact 11, switching winding 12 are connected successively with divide-shut brake power supply 42;
Described divide-shut brake control driving circuit 31, the control outlet device 26 that closes a floodgate, the first anti-trip relay 28, the second opening and closing state contact 60, closing coil 13 form closing circuit with divide-shut brake power supply 42;
Described divide-shut brake control driving circuit 31 is connected with the control end of the control outlet device 26 that closes a floodgate; Described combined floodgate control outlet device 26, the first anti-trip relay 28, the second opening and closing state contact 60, closing coil 13 are connected successively with divide-shut brake power supply 42;
Close a floodgate control outlet device 26 and separating brake control outlet device 27 for can turn-off power electronic devices.Use can be turn-offed power electronic devices, can shorten and accurately control branch wire time, make branch wire time be reduced to 40ms from the 100ms of prior art, make opening time be reduced to 15ms from the 60ms of prior art, realize Fault Phase Selection separating brake and phase selection reclosing accurately.
Described power electronic devices is IGBT pipe or metal-oxide-semiconductor or large power triode or turn-off thyristor;
On described closing circuit, be provided with the first break-make testing circuit 34, described the first break-make testing circuit 34 is connected with the first photoelectric isolating device 32;
On described sub-gate circuit, be provided with the second break-make testing circuit 35, described the second break-make testing circuit 35 is connected with the second photoelectric isolating device 33;
The output terminal of described the first photoelectric isolating device 32 and the second photoelectric isolating device 33 is connected with first microprocessor circuit 3 respectively.
Described first microprocessor circuit 3 is sent to successively divide-shut brake control outlet by separating brake command signal and drives interface circuit 31, separating brake control outlet device 27, switching winding 12 and the first opening and closing state contact 11; Separating brake command signal is sent to divide-shut brake control circuit 4 and first microprocessor circuit 3 by described the first opening and closing state contact 11;
Described breaking-closing operating assembly 10 also comprises the current detection circuit 30 for monitoring divide-shut brake process switching winding 12 or closing coil 13 current values;
Described current detection circuit 30 is arranged between the point 57 and divide-shut brake power supply 42 of sub-gate circuit and closing circuit;
Described current detection circuit 30 is connected with described first microprocessor circuit 3.The break-make monitoring of microcontroller circuit 3 to switching winding 12 and closing coil 13, and the electric current of closing coil 13 in electric current and the making process of switching winding 12 in separating brake process is measured and is diagnosed and upload, circuit is simple, logic is reasonable, realize isolating switch main circuit parts on-line monitoring, find ahead of time fault, process in time, avoid the generation of power grid accident.
Described current transformer 24 is sent to first microprocessor circuit 3 by the current signal detecting through electric current pre-process circuit 25, and separating brake command signal is sent to successively divide-shut brake control circuit 4, breaking-closing operating assembly 10 and switching winding 12 by described first microprocessor circuit 3.
Described electric current back-up protection circuit 7 comprises the first potentiometer 36, the second potentiometer 37, the 3rd potentiometer 38, the first photoelectric isolating device 39, the second photoelectric isolating device 40, the 3rd photoelectric isolating device 41, working power 59 and current testing web member 43;
Described the first photoelectric isolating device 39 is connected with the current transformer 24 of the load end of isolating switch via the first potentiometer 36; Described the second photoelectric isolating device 40 is connected with the current transformer 24 of the load end of isolating switch via the second potentiometer 37; Described photoelectric isolating device 41 is connected with the current transformer 24 of the load end of isolating switch via the 3rd potentiometer 38;
Described the first potentiometer 36, the second potentiometer 37, the 3rd potentiometer 38 are connected with current testing web member 43 respectively;
The output terminal of described the first photoelectric isolating device 39, the second photoelectric isolating device 40, the 3rd photoelectric isolating device 41 is connected with working power 59, first microprocessor circuit 3 and divide-shut brake control circuit 4 respectively.
Described controller main body 1 is outside equipped with electromagnetic screen and electric connection line,
Described electromagnetic screen comprises all around panel 50, front panel 44 for electromagnetic screen, rear panel 45 for electromagnetic screen; Described electromagnetic screen is connected by fixture with panel 50 all around respectively with front panel 44 and electromagnetic screen rear panel 45;
Described all around panel 50, electromagnetic screen are double-deck or double-deck above sheet metal with front panel 44 and electromagnetic screen rear panel 45;
On described electromagnetic screen, be provided with antidetonation web member 48 and wiring board;
Described wiring board is motherboard 49 and plate 58; On described motherboard 49 and plate 58, be provided with connector 51; Described plate 58 is suitable by connector 51 and motherboard 49; Described electromagnetic screen is with being provided with cable hole on rear panel 45, and described electric connection line is directly connected with motherboard 49 after by cable hole.
Described sheet metal is double-deck, and internal layer is aluminium sheet 47, and skin is iron plate 46; The thickness of described aluminium sheet 47 is not less than 3mm; Skin is iron plate 46, and the thickness of described iron plate 46 is for being not less than 1mm; Iron plate 46 has very strong shielding action to magnetic field, and aluminium sheet 47 disturbs and has very strong shielding action electric field, and the two has certain thickness combination, makes controller main body 1 have good Electro Magnetic Compatibility, and guaranteeing can reliably working in situations such as load short circuits.
In described divide-shut brake power supply 42, be provided with capacitor; Capacitor is for energy storage, and the degree of stability that reduces the capacity of external power source 15 and improve working power circuit 9 with this, makes branch wire time point control more accurate accurately.
Described electric connection line is the cable 52 with metal screen layer, and the screen layer of described cable 52 is connected with electromagnetic screen via motherboard 49 ground planes.Metallic shield cable 52, for preventing the introducing of undesired signal, improves Electro Magnetic Compatibility; One-piece construction of the present utility model is simple, installs, debugs, keeps in repair also very convenient.
The electric current back-up protection circuit of the integrated breaker controller of a kind of high pressure of the present utility model, described electric current back-up protection circuit 7 comprises the first potentiometer 36, the second potentiometer 37, the 3rd potentiometer 38, the first photoelectric isolating device 39, the second photoelectric isolating device 40, the 3rd photoelectric isolating device 41, working power 59 and current testing web member 43;
Described the first photoelectric isolating device 39 is connected with the current transformer 24 of the load end of isolating switch via the first potentiometer 36; Described the second photoelectric isolating device 40 is connected with the current transformer 24 of the load end of isolating switch via the second potentiometer 37; Described photoelectric isolating device 41 is connected with the current transformer 24 of the load end of isolating switch via the 3rd potentiometer 38;
Described the first potentiometer 36, the second potentiometer 37, the 3rd potentiometer 38 are connected with current testing web member 43 respectively;
Described working power 59, first microprocessor circuit 3 and divide-shut brake control circuit 4 are connected with the output terminal of the first photoelectric isolating device 39, the second photoelectric isolating device 40, the 3rd photoelectric isolating device 41 respectively.
The A utmost point of described the first photoelectric isolating device 39 is connected with the A end of the current transformer 24 of the load end of breaking-closing operating assembly 10 via the first potentiometer 36, and the K utmost point of described the first photoelectric isolating device 39 is connected with the N of described current transformer 24 end;
The A utmost point of described the second photoelectric isolating device 40 is connected with the B end of the load end current transformer 24 of isolating switch via the second potentiometer 37, and the K utmost point of described the second photoelectric isolating device 40 is connected with the N of described current transformer 24 end;
The A utmost point of described the 3rd photoelectric isolating device 41 is connected with the C end of the load end current transformer 24 of isolating switch via the 3rd potentiometer 38, and the K utmost point of described the 3rd photoelectric isolating device 41 is connected with the N of described current transformer 24 end.
The present embodiment is with the difference of embodiment 1, and described closing circuit is connected with the first photoelectric isolating device 32 with the first break-make testing circuit 34 by electric connection line at A2 point.
Described sub-gate circuit is connected with the second photoelectric isolating device 33 with the second break-make testing circuit 35 by electric connection line at B2 point.
Described power electronic devices is large power triode or turn-off thyristor or metal-oxide-semiconductor.
The present embodiment is with the difference of embodiment 1, and described closing circuit is connected with the first photoelectric isolating device 32 with the first break-make testing circuit 34 by electric connection line at A2 point.Described sub-gate circuit is connected with the second photoelectric isolating device 33 with the second break-make testing circuit 35 by electric connection line at B1 point.Described power electronic devices is turn-off thyristor or metal-oxide-semiconductor.
The present embodiment is with the difference of embodiment 1, and described closing circuit is connected with the first photoelectric isolating device 32 with the first break-make testing circuit 34 by electric connection line at A1 point.Described sub-gate circuit is connected with the second photoelectric isolating device 33 with the second break-make testing circuit 35 by electric connection line at B2 point.Described power electronic devices is large power triode.
The utility model is simple in structure, easy to use, multiple functional, anti-electromagnetic interference capability is strong, in the time there is load short circuits fault reliably protecting, and can accurately control the switch movable contact motion of isolating switch.The isolating switch recording according to the switch movable contact displacement detecting circuit of isolating switch divides, closing time, control killer switch divides, close a floodgate, killer switch is divided, the time point closing a floodgate is just in time at the zero crossing of short trouble cross streams voltage, realize current mode emergency protection phase selection separating brake and Fault Phase Selection reclosing, compared with prior art, greatly reduce current mode fault separating brake and reclosing to electrical network, the serious impact that load and equipment cause itself and harm, breaker controller is realized the main circuit parts on-line monitoring of isolating switch, find ahead of time fault, process in time, avoid the generation of power grid accident.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and instructions, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and the claimed scope of the utility model is defined by appending claims, instructions and equivalent thereof.
Claims (15)
1. the integrated breaker controller of high pressure, comprise controller main body (1), fore-lying device (2) and stroke detection circuit (5), it is characterized in that: described controller main body (1) comprises first microprocessor circuit (3) and divide-shut brake control circuit (4);
Described controller main body (1) is connected by the current transformer (24) of the electric connection line power supply outside with it (15), distribution voltage mutual inductor (16), isolating switch load and the breaking-closing operating assembly (10) being arranged in isolating switch;
Described controller main body (1) is connected with fore-lying device (2) by communication port (53); Described stroke detection circuit (5) is connected with first microprocessor circuit (3); Described first microprocessor circuit (3) is connected with divide-shut brake control circuit (4); Described controller main body (1) is connected with the breaking-closing operating assembly (10) of isolating switch.
2. the integrated breaker controller of high pressure according to claim 1, is characterized in that: described controller main body (1) also comprise three-phase alternating voltage phase detecting circuit (17), electric current pre-process circuit (25), electric current back-up protection circuit (7), working power circuit (9), working power circuit for subsequent use (8) and or door character circuit (14);
Described three-phase alternating voltage phase detecting circuit (17), electric current pretreater circuit (25) and electric current back-up protection circuit (7) are connected with first microprocessor circuit (3) respectively by electric connection line;
Described electric current pre-process circuit (25) is connected with described breaking-closing operating assembly (10) by divide-shut brake control circuit (4) via first microprocessor circuit (3);
Described electric current back-up protection circuit (7) is connected with described breaking-closing operating assembly (10) by divide-shut brake control circuit (4);
The power supply (15) of described outside is connected with working power circuit (9); Distribution voltage mutual inductor (16) is connected with working power circuit for subsequent use (8);
Described working power circuit (9) and working power circuit for subsequent use (8) by or a door character circuit (14) be connected with described micro-processor interface circuit (3);
The input end of described three-phase alternating voltage phase detecting circuit (17) is connected with outside distribution voltage mutual inductor (16), and output terminal is connected with microcontroller circuit (3);
Described electric current pre-process circuit (25) is connected with current transformer (24) respectively with electric current back-up protection circuit (7).
3. the integrated breaker controller of high pressure according to claim 1, is characterized in that:
Described fore-lying device (2) is also provided with the second microcontroller circuit (18) and the second electrical isolation device (19); In described controller main body (1), be provided with the first electrical isolation device (6);
Described communication port (53) is connected with first microprocessor circuit (3) by the first electrical isolation device (6); Described communication port (53) is connected with the second microcontroller circuit (18) by the second electrical isolation device (19).
4. the integrated breaker controller of high pressure according to claim 3, is characterized in that: described fore-lying device (2) also comprises fore-lying device front panel and fore-lying device rear panel;
Described fore-lying device is with being provided with liquid crystal touch screen (20), function pressing plate (21), human body infrared induction pick-up (22), breaking-closing operating button, a distant place and body operation switch, more than one pilot lamp and the first Temperature Humidity Sensor (23) on front panel; Described fore-lying device is with being provided with the second Temperature Humidity Sensor (54) on rear panel;
Described liquid crystal touch screen (20), function pressing plate (21), human body infrared induction pick-up (22), breaking-closing operating button, a distant place are connected with the second microcontroller circuit (18) respectively with body operation switch, more than one pilot lamp, the first Temperature Humidity Sensor (23), the second Temperature Humidity Sensor (54).
5. the integrated breaker controller of high pressure according to claim 4, is characterized in that: on described fore-lying device (2), be also provided with GPRS communication module (55) and RF radio-frequency communication module (56);
Described GPRS communication module (55) is connected with the second microcontroller circuit (18) respectively with RF radio-frequency communication module (56).
6. the integrated breaker controller of high pressure according to claim 1, is characterized in that: described breaking-closing operating assembly (10) comprises the first opening and closing state contact (11), the second opening and closing state contact (60), switching winding (12), closing coil (13), divide-shut brake power supply (42), closes a floodgate and control outlet device (26), separating brake control outlet device (27), divide-shut brake control driving circuit (31), the first anti-trip relay (28) and the second anti-trip relay (29);
Described divide-shut brake control driving circuit (31), separating brake control outlet device (27), the second anti-trip relay (29), the first opening and closing state contact (11), switching winding (12) form sub-gate circuit with divide-shut brake power supply (42);
Described divide-shut brake control driving circuit (31) is connected with the control end of separating brake control outlet device (27); Described separating brake control outlet device (27), the second anti-trip relay (29), the first opening and closing state contact (11), switching winding (12) are connected successively with divide-shut brake power supply (42);
Described divide-shut brake control driving circuit (31), close a floodgate control outlet device (26), the first anti-trip relay (28), the second opening and closing state contact (60), closing coil (13) form closing circuit with divide-shut brake power supply (42);
Described divide-shut brake control driving circuit (31) is connected with the control end of the control outlet device (26) that closes a floodgate; Described combined floodgate control outlet device (26), the first anti-trip relay (28), the second opening and closing state contact (60), closing coil (13) are connected successively with divide-shut brake power supply (42);
Close a floodgate control outlet device (26) and separating brake control outlet device (27) for can turn-off power electronic devices.
7. the integrated breaker controller of high pressure according to claim 6, is characterized in that: described power electronic devices is IGBT pipe or metal-oxide-semiconductor or large power triode or turn-off thyristor;
On described closing circuit, be provided with the first break-make testing circuit (34), described the first break-make testing circuit (34) is connected with the first photoelectric isolating device (32);
On described sub-gate circuit, be provided with the second break-make testing circuit (35), described the second break-make testing circuit (35) is connected with the second photoelectric isolating device (33);
The output terminal of described the first photoelectric isolating device (32) and the second photoelectric isolating device (33) is connected with first microprocessor circuit (3) respectively.
8. the integrated breaker controller of high pressure according to claim 3, is characterized in that: described first microprocessor circuit (3) is sent to successively divide-shut brake control outlet by separating brake command signal and drives interface circuit (31), separating brake control outlet device (27), switching winding (12) and the first opening and closing state contact (11); Separating brake command signal is sent to divide-shut brake control circuit (4) and first microprocessor circuit (3) by described the first opening and closing state contact (11);
First microprocessor circuit (3) is sent to successively divide-shut brake control outlet by reclosing command signal and drives interface circuit (31), closes a floodgate and control outlet device (26), closing coil (13) and the second opening and closing state contact (60); Reclosing command signal is sent to divide-shut brake control circuit (4) and first microprocessor circuit (3) by described the second opening and closing state contact (60).
9. the integrated breaker controller of high pressure according to claim 6, is characterized in that: described breaking-closing operating assembly (10) also comprises the current detection circuit (30) for monitoring divide-shut brake process switching winding (12) or closing coil (13) current value;
Described current detection circuit (30) is arranged between the point (57) and divide-shut brake power supply (42) of sub-gate circuit and closing circuit;
Described current detection circuit (30) is connected with described first microprocessor circuit (3).
10. the integrated breaker controller of high pressure according to claim 2, it is characterized in that: described current transformer (24) is sent to first microprocessor circuit (3) by the current signal detecting through electric current pre-process circuit (25), separating brake command signal is sent to successively divide-shut brake control circuit (4), breaking-closing operating assembly (10) and switching winding (12) by described first microprocessor circuit (3).
The integrated breaker controller of 11. high pressure according to claim 2, is characterized in that: described electric current back-up protection circuit (7) comprises the first potentiometer (36), the second potentiometer (37), the 3rd potentiometer (38), the first photoelectric isolating device (39), the second photoelectric isolating device (40), the 3rd photoelectric isolating device (41), working power (59) and current testing web member (43);
Described the first photoelectric isolating device (39) is connected with the current transformer (24) of the load end of isolating switch via the first potentiometer (36); Described the second photoelectric isolating device (40) is connected with the current transformer (24) of the load end of isolating switch via the second potentiometer (37); Described photoelectric isolating device (41) is connected with the current transformer (24) of the load end of isolating switch via the 3rd potentiometer (38);
Described the first potentiometer (36), the second potentiometer (37), the 3rd potentiometer (38) are connected with current testing web member (43) respectively;
The output terminal of described the first photoelectric isolating device (39), the second photoelectric isolating device (40), the 3rd photoelectric isolating device (41) is connected with working power (59), first microprocessor circuit (3) and divide-shut brake control circuit (4) respectively.
The integrated breaker controller of 12. high pressure according to claim 1, is characterized in that: described controller main body (1) is outside equipped with electromagnetic screen and electric connection line,
Described electromagnetic screen comprises all around panel (50), front panel (44) for electromagnetic screen, rear panel (45) for electromagnetic screen; Described for electromagnetic screen front panel (44) and rear panel for electromagnetic screen (45) be connected by fixture with panel (50) all around respectively;
Described all around panel (50), for electromagnetic screen front panel (44) and for electromagnetic screen rear panel (45) be double-deck or double-deck above sheet metal;
On described electromagnetic screen, be provided with antidetonation web member (48) and wiring board;
Described wiring board is motherboard (49) and plate (58); On described motherboard (49) and plate (58), be provided with connector (51); Described plate (58) is suitable by connector (51) and motherboard (49); Describedly for electromagnetic screen, on rear panel (45), be provided with cable hole, described electric connection line is directly connected with motherboard (49) after by cable hole.
The integrated breaker controller of 13. high pressure according to claim 12, is characterized in that: described sheet metal is for double-deck, and internal layer is aluminium sheet (47), and skin is iron plate (46);
In described divide-shut brake power supply (42), be provided with capacitor;
Described electric connection line is the cable (52) with metal screen layer, and the screen layer of described cable (52) is connected with electromagnetic screen via motherboard (49) ground plane.
The electric current back-up protection circuit of 14. 1 kinds of integrated breaker controllers of high pressure, is characterized in that: described electric current back-up protection circuit (7) comprises the first potentiometer (36), the second potentiometer (37), the 3rd potentiometer (38), the first photoelectric isolating device (39), the second photoelectric isolating device (40), the 3rd photoelectric isolating device (41), working power (59) and current testing web member (43);
Described the first photoelectric isolating device (39) is connected with the current transformer (24) of the load end of isolating switch via the first potentiometer (36); Described the second photoelectric isolating device (40) is connected with the current transformer (24) of the load end of isolating switch via the second potentiometer (37); Described photoelectric isolating device (41) is connected with the current transformer (24) of the load end of isolating switch via the 3rd potentiometer (38);
Described the first potentiometer (36), the second potentiometer (37), the 3rd potentiometer (38) are connected with current testing web member (43) respectively;
Described working power (59), first microprocessor circuit (3) and divide-shut brake control circuit (4) are connected with the output terminal of the first photoelectric isolating device (39), the second photoelectric isolating device (40), the 3rd photoelectric isolating device (41) respectively.
15. electric current back-up protection circuit according to claim 14, it is characterized in that: the A utmost point of described the first photoelectric isolating device (39) is connected with the A end of the current transformer (24) of the load end of breaking-closing operating assembly (10) via the first potentiometer (36), the K utmost point of described the first photoelectric isolating device (39) is connected with the N end of described current transformer (24);
The A utmost point of described the second photoelectric isolating device (40) is connected with the B end of the load end current transformer (24) of isolating switch via the second potentiometer (37), and the K utmost point of described the second photoelectric isolating device (40) is connected with the N end of described current transformer (24);
The A utmost point of described the 3rd photoelectric isolating device (41) is connected with the C end of the load end current transformer (24) of isolating switch via the 3rd potentiometer (38), and the K utmost point of described the 3rd photoelectric isolating device (41) is connected with the N end of described current transformer (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019583.8U CN203673279U (en) | 2014-01-13 | 2014-01-13 | High-voltage integrated breaker controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420019583.8U CN203673279U (en) | 2014-01-13 | 2014-01-13 | High-voltage integrated breaker controller |
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| CN203673279U true CN203673279U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420019583.8U Expired - Fee Related CN203673279U (en) | 2014-01-13 | 2014-01-13 | High-voltage integrated breaker controller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015103883A1 (en) * | 2014-01-13 | 2015-07-16 | 江苏现代电力科技股份有限公司 | Integrated high-voltage alternating-current circuit breaker controller |
| CN106410619A (en) * | 2016-08-28 | 2017-02-15 | 安徽普天电力科技有限公司 | Opening prevention type quick switch cabinet |
| CN106877226A (en) * | 2017-03-24 | 2017-06-20 | 郑州祥和集团电气设备有限公司 | The AC metal closed switching device of novel intelligent |
| CN109188263A (en) * | 2018-09-18 | 2019-01-11 | 湖南长高高压开关有限公司 | High voltage isolator alternating current-direct current voltage regulation power supply test operation secondary circuit system |
-
2014
- 2014-01-13 CN CN201420019583.8U patent/CN203673279U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015103883A1 (en) * | 2014-01-13 | 2015-07-16 | 江苏现代电力科技股份有限公司 | Integrated high-voltage alternating-current circuit breaker controller |
| CN106410619A (en) * | 2016-08-28 | 2017-02-15 | 安徽普天电力科技有限公司 | Opening prevention type quick switch cabinet |
| CN106877226A (en) * | 2017-03-24 | 2017-06-20 | 郑州祥和集团电气设备有限公司 | The AC metal closed switching device of novel intelligent |
| CN109188263A (en) * | 2018-09-18 | 2019-01-11 | 湖南长高高压开关有限公司 | High voltage isolator alternating current-direct current voltage regulation power supply test operation secondary circuit system |
| CN109188263B (en) * | 2018-09-18 | 2024-03-26 | 湖南长高高压开关有限公司 | High-voltage isolating switch AC/DC voltage regulation power supply test operation secondary circuit system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20190113 |