CN107275934B - A kind of electric power system power distribution protective device, application and method - Google Patents
A kind of electric power system power distribution protective device, application and method Download PDFInfo
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- CN107275934B CN107275934B CN201710463989.3A CN201710463989A CN107275934B CN 107275934 B CN107275934 B CN 107275934B CN 201710463989 A CN201710463989 A CN 201710463989A CN 107275934 B CN107275934 B CN 107275934B
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- 230000001681 protective effect Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000005611 electricity Effects 0.000 claims abstract description 25
- 238000007689 inspection Methods 0.000 claims abstract description 8
- 230000008439 repair process Effects 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 230000006798 recombination Effects 0.000 claims description 4
- 238000005215 recombination Methods 0.000 claims description 4
- 230000000737 periodic effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of electric power system power distribution protective device, application and methods; including distribution cabinet body, travel switch, three electromagnetic relays, signal lamp, controlled switch; wherein three electromagnetic relays all pass through signal lamp and act on controlled switch; wherein two electromagnetic relay electromagnetic coil circuits mutually control; and it is acted on respectively in normal power supply and ad hoc inspection and repair; when another electromagnetic relay does delay meter and auxiliary standby; and also by enabling outer two electromagnetic relays be controlled, they form three control loops and act on to controlled switch.The present invention may be implemented in the case where uninterrupted power supply, is overhauled, is transformed to the controller switching equipment in power distribution cabinet (case), the work such as rotation and periodic inspection；When law-breaker illegally opens, such as be still not inserted into private key within the set time, then system can power off, and only be inserted into private key the case where can just restore electricity.
Description
Technical field
The present invention relates to a kind of electric power system power distribution protective device, application and methods.
Background technique
The equipment such as power distribution device such as power distribution cabinet, batch meter are protection load tap changers, mutual inductor, electric energy meter at present
The most direct barrier of equal important equipments after law-breaker opens, after the operation such as being bridged, being transformed to its internal unit, then closes
Cabinet (case) door is closed, power distribution equipment is restored as former state, it is easy to cause stealing.And electricity filching means are more and more hidden, and stealing occurs
Afterwards, it is difficult to find in the short time, is all often power utility check personnel by line loss per unit, platform area loss on transmission rate, in one period of user
Electricity consumption variation etc. data analyzed, then carry out field investigation, evidence obtaining.Electricity is carried out in accordance with the law again after confirmation electricity stealing
It remedies, the post-processings such as electricity charge recovery and punishment.The work of electricity anti-stealing of such formula of looking for a needle in a haystack is i.e. time-consuming and laborious, and anti-
The purpose emphasis that stealing is investigated and prosecuted is preventing electricity stealing further occurrence not in economic penalties.It is necessary to counterweights thus
Controller switching equipment is wanted to be transformed.
Controller switching equipment such as transformer, mutual inductor etc. are bridged privately, around more metering device；Or to mutual inductor, electric energy meter etc.
It divided, shunted, causing electric energy to be counted less all is common electricity filching means.And both electricity filching means require to open power distribution cabinet
(case) could operate its inside, if adding a special protecting equipment to power distribution cabinet (case), increase at cabinet (case) door
One stroke switch, when unlatching, touch protective device, are such as inserted into private key, then start second switching circuitry, still keep sending
Electricity；It is such as not inserted into private key, the auxiliary switch loop-delay of design disconnects afterwards for a period of time, system cut-off, does not insert still such as
Enter private key, then system power supply can not restore.
Such power distribution protective device can make work of electricity anti-stealing become preventing in advance from post-survey, by passively becoming actively,
The working strength for mitigating power utility check personnel, improves labor efficiency, while ensureing that power resource is not illegally stolen.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes a kind of electric power system power distribution protective device, application and method, this hair
It is bright to may be implemented in the case where uninterrupted power supply, the controller switching equipment in power distribution cabinet (case) is overhauled, is transformed, rotation and week
The work such as phase inspection；When law-breaker illegally opens, it is still such as not inserted into private key within the set time, then system meeting
The case where powering off, and being only inserted into private key can just restore electricity.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of electric power system power distribution protective device, including control power supply, travel switch, private key and three electromagnetism relays
Device, wherein the control power supply is travel switch, private key and three electromagnetic relays provide power supply, three electromagnetism
Relay includes main electromagnetic relay, from electromagnetic relay and auxiliary selenoid relay, and three electromagnetic relays all contain electromagnetism
Coil, main electromagnetic relay are mutually controlled from electromagnetic relay electromagnetic coil circuit, and respectively in normal power supply and ad hoc inspection and repair
Shi Zuoyong is provided with private key from electromagnetic relay electromagnetic coil circuit, when auxiliary selenoid relay is for delay meter and auxiliary
Help it is spare, with realize when being not inserted into private key, carry out delay power-off and only insertion private key the case where could restore
Power supply.
The master and slave electromagnetic relay has an access combination switch and an assisted recombination switch respectively, and access is compound
Switch is connected with assisted recombination switch by mechanical column, and each combination switch has a pair of normally opened and normally closed interlock.
Only one channel selector of auxiliary selenoid relay.
Electromagnetic coil and travel switch, the main electromagnetic relay of the main electromagnetic relay assist normally closed interlock and control
Power supply forms series loop；From the electromagnetic coil and private key of electromagnetic relay, main electromagnetic relay auxiliary normally open contact with
It controls power supply and forms series loop.
The main electromagnetic relay auxiliary normally closed interlock and in parallel from electromagnetic relay auxiliary normally open contact；Main electromagnetism relay
Device access normally closed interlock and in parallel from electromagnetic relay access normally open contact.
The coil of the auxiliary selenoid relay is connected by transistor controls, and transistor base is after two phase inverters by electricity
Hold and is controlled with the voltage of auxiliary resistance tie point；The voltage swing after diode and another phase inverter by any master,
It is closed and controls from electromagnetic relay auxiliary contact, when contact closure, auxiliary selenoid relay channel selector closure.
After the auxiliary selenoid relay channel selector and two master and slave electromagnetic relay access combination switches are in parallel by
Signal lamp acts on controlled switch.
The main electromagnetic relay channel selector is the control switch of normal electric power thus supplied, from electromagnetic relay channel selector
Closure again for the control switch of spare condition, main electromagnetic relay channel selector is needed from electromagnetic relay auxiliary switch.
The closure of master and slave electromagnetic relay switch contact needs certain electromagnetic force, there is certain stroke distances.
Power distribution cabinet, using above-mentioned power distribution protective device, power distribution protective device is set in cabinet door.
Working method based on the above power distribution cabinet, comprising the following steps:
(1) prepare before opening power distribution cabinet, be inserted into private key；
(2) cabinet door is opened, and travel switch movement, main electromagnetic relay coil circuit disconnects, and channel selector normally closed interlock is beaten
It opens, auxiliary switch normally open contact starts to be closed, and at the same time, the control capacitor of transistor base discharges, i.e. auxiliary selenoid relay
Device disconnects timing and starts, and controlled switch still remains closed under the effect of auxiliary selenoid relay at this time, and distribution system is powered not
It interrupts；
(3) in the case where being inserted into private key, after main electromagnetic relay auxiliary switch normally open contact closure, from electromagnetism after
Electric apparatus coil circuit closed all will from the normally open contact of electromagnetic relay channel selector and auxiliary switch under the influence of a magnetic field
Closure, after closure, controlled switch is remained closed by under the effect of electromagnetic relay channel selector, at the same time, due to from
Electromagnetic relay auxiliary switch normally open contact is also closed, and the control capacitor discharge off of transistor base is simultaneously recharged,
Auxiliary selenoid relay channel selector still remains closed；
(4) complete in power distribution cabinet power equipment carry out operation after, close cabinet door, travel switch closure, at this time by
In being closure from electromagnetic relay auxiliary switch normally open contact, main electromagnetic relay coil circuit is formed, the effect in magnetic field
Under, the normally closed interlock of main electromagnetic relay channel selector and auxiliary switch will be all closed, with main electromagnetic relay auxiliary switch
Normally open contact disconnect, from electromagnetic relay coil circuit disconnect, from the channel selector contact and auxiliary switch of electromagnetic relay
Contact all restPoses, distribution system service restoration original state.
In the step (3), such as start to disconnect in timing time and being inserted into auxiliary selenoid relay there is no private key
Private key can still make all to be closed from the normally open contact of electromagnetic relay channel selector and auxiliary switch, and distribution system is still
Uninterrupted power supply.
In the step (3), such as always all without private key, after the timing period, auxiliary selenoid relay access
Switch disconnects, distribution system power failure.
In the step (4), it is such as not inserted into private key, that is, turns off cabinet door, since main electromagnetic relay coil returns
Road is not formed, and the normally closed interlock of main electromagnetic relay channel selector and auxiliary switch cannot be all closed, and distribution system power supply can not
Restore.
In (1)-(4), if customers dial call request restores electricity, Utilities Electric Co. personnel can be dedicated by being inserted into
Key, electromagnetic relay coil closed circuit re-form, and the normally-closed contact of channel selector and auxiliary switch re-closes, distribution
System restPoses.And the client of this unnormal unlocking cabinet door is stealing suspicion client, needs emphasis detection, checks distribution
Equipment.
Compared with prior art, the invention has the benefit that
(1) present invention provides double loop by main electromagnetic relay and auxiliary selenoid relay under normal circumstances for client and supplies
Electricity can improve powered stable by providing double circuit power supply from electromagnetic relay and auxiliary selenoid relay in opening
Property；
(2) controller switching equipment is overhauled, is transformed, rotation or when periodic inspection, it can be achieved that uninterrupted power supply, improves and supplies
Electric service level.
(3) when illegally opening power distribution cabinet (case), it can automatically power off, and non-electricity associate can not restore, prevent from stealing
The occurrence of electric.
(4) when there is such power failure client to report for repairment, it is doubtful stealing client, opposes electricity-stealing and check work and reduce investigation model
It encloses, the investigation efficiency of raising.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the workflow schematic diagram of electric power system power distribution protective device of the invention；
Fig. 2 is structural schematic diagram of the invention；
Fig. 3 is performance loop schematic diagram of the present invention；
Fig. 4 is the control waveform diagram in the various situations of the present invention；
Wherein: 1. power distribution cabinets (case) body, 2. control power supplys, 3. travel switches, 4. private keys, 5. main electromagnetic relays,
6. 7. auxiliary selenoid relays, 8. phase inverters, 9. diodes, 10 auxiliary resistances, 11. capacitors, 12. is brilliant from electromagnetic relay
Body pipe, 13. signal lamps, 14. controlled switch.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, exist in the prior art after law-breaker opens, to its internal unit carry out across
After the operation such as connecing, being transformed, cabinet (case) door is turned off, power distribution equipment is restored as former state, it is easy to caused stealing and should not find
Deficiency, in order to solve technical problem as above, present applicant proposes a kind of electric power system power distribution protective device, the present apparatus can be real
In the case where present uninterrupted power supply, the controller switching equipment in power distribution cabinet (case) is overhauled, is transformed, rotation and periodic inspection etc.
Work；When law-breaker illegally opens, being such as still not inserted into private key within the set time, then system can power off, and
Only the case where insertion private key, can just restore electricity.
As shown in Fig. 2, the present invention includes distribution cabinet body 1, control power supply 2, travel switch 3, private key 4, main electromagnetism after
Electric appliance 5 and from electromagnetic relay 6, master and slave relay all includes channel selector composite contact and auxiliary switch composite contact, the two
Channel selector all act on controlled switch 14 after signal lamp 13, main electromagnetic relay electromagnetic coil passes through travel switch 3
It is formed back with the normally-closed contact (or normally opened contact from electromagnetic relay auxiliary switch) and control power supply 3 of itself auxiliary switch
Road, from electromagnetic relay electromagnetic coil by the normally opened contact and control electricity of private key 4 and main electromagnetic relay auxiliary switch
Source 3 is formed into a loop, and electromagnetic coil is powered, then two electromagnetic relay channel selector lower contacts are closed.
Simultaneously the invention also includes auxiliary selenoid relay 7, auxiliary selenoid relay 7 includes a channel selector, this is logical
Way switch acts on controlled switch 14 after signal lamp 13, and the electromagnetic coil of auxiliary selenoid relay 7 is after transistor 12
With control power supply forming circuit.There are auxiliary resistance 10 and three phase inverters 8 before the base stage of transistor 12, in No. II phase inverter and I
Series diode closes 9 between number phase inverter, connects control power cathode through auxiliary resistance under contact, on through capacitor connecing control power supply just
Pole.Control positive pole, the lower normally closed touching through main electromagnetic relay auxiliary switch are connect through auxiliary resistance on No. I inverter input
Point (or normally opened contact from electromagnetic relay auxiliary switch) connects control power cathode.
In the case where control loop is connected (i.e. the bright situation of signal lamp 13), distribution line can be supplied externally controlled switch 14
Electricity, control loop is obstructed, then can not supplying power for outside, normal operation is as follows:
Main electromagnetic relay channel selector and auxiliary switch normally-closed contact and travel switch are controlled to open all in closed state
The main electromagnetic relay channel selector of Guan Jing completes closure, supplying power for outside.
Auxiliary selenoid relay is since No. I phase inverter input section is through the main normally closed touching of electromagnetic relay auxiliary switch at the same time
Point is followed by control power cathode, is low level, is high level after reverse phase, and diode 9 is connected, the charging of 11 lower end of capacitor, accumulation
Positive charge.After two phase inverters, 12 base stage high level of transistor, transistor turns, auxiliary selenoid relay channel selector closed
It closes, controlled switch can also be completed to be closed through this channel selector, supplying power for outside, as shown in figure 3 by the solid lines with electric control loop.
Distribution cabinet door, travel switch movement, main electromagnetic relay access are opened in the case where being not inserted into private key
The circuit of switch control disconnects immediately, while its auxiliary switch normally-closed contact is also opened, and No. I inverter input is high electricity
Flat, output end is low level, and diode is not turned on, and 11 lower end of capacitor starts to discharge, and is such as being set in discharge time, always
It is not inserted into key, then it is still low level, transistor is no longer led after two-stage reverse phase that No. II inverter input, which is low level,
Logical, auxiliary selenoid relay channel selector is also opened, to power failure, control waveform such as Fig. 4 of the access of specific controlled switch
Middle t1-t2It is shown.
At this point, cabinet door is turned off, travel switch closure, but passed through as needed for main electromagnetic relay electromagnetic coil
The normally-closed contact of itself auxiliary switch be in an open state (or from the normally opened contact of electromagnetic relay auxiliary switch be also open shape
State), power supply can not still restore, and to restore electricity, need Utilities Electric Co. personnel by plug private key, be just able to achieve electromagnetism
Coil is connected, t in the control waveform such as Fig. 4 of the access of controlled switch3-t4It is shown.
Distribution cabinet door is opened in the case where being not inserted into private key, such as within the power-off delay time of setting, insertion
Private key, due to auxiliary selenoid relay channel selector act on, system still will not interruption of power supply, control the control of the access of switch
T in waveform such as Fig. 4 processed5-t6It is shown, hereafter load tap changer, mutual inductor, the electric energy meter in distribution electric cabinet can be examined
It repairs, be transformed, the work such as rotation or periodic inspection, after the completion of work, closing cabinet door, distribution system service restoration to original state is controlled
T in the control waveform such as Fig. 4 of the access of switch7-t8It is shown.
Such as before opening cabinet door, it is inserted into private key, then carries out relevant service work again, such as with electric control loop
Shown in Fig. 3 dotted line, t in the control waveform such as Fig. 4 of controlled switch access9-t12It is shown.
Auxiliary selenoid relay channel selector acts on specific delay time by the threshold size of condenser capacity and phase inverter
It is related, it can be according to length of time needs, regulating allocation.
Either in normal operating conditions or overhaul of the equipments state, the controlled switch of distribution line is all by two-way control
Signal function processed, improves power supply reliability.
Having a power failure as Utilities Electric Co. personnel are connected to caused by this device is illegally opened, then the user is included in doubtful stealing user,
The data such as user's early period and rear electricity consumption need to be reinforced paying attention to analysis.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (8)
1. a kind of electric power system power distribution protective device, it is characterized in that: including control power supply, travel switch, private key and three
Electromagnetic relay, wherein the control power supply is travel switch, private key and three electromagnetic relays provide power supply, described
Three electromagnetic relays include main electromagnetic relay, from electromagnetic relay and auxiliary selenoid relay, and three electromagnetic relays are all
Containing electromagnetic coil, main electromagnetic relay is mutually controlled from electromagnetic relay electromagnetic coil circuit, and respectively in normal power supply and
It is acted on when ad hoc inspection and repair, the master and slave electromagnetic relay has an access combination switch and an assisted recombination switch, access
Combination switch is switched with assisted recombination to be connected by mechanical column, and each combination switch has a pair of normally opened and normally closed interlock；
Only one channel selector of auxiliary selenoid relay；
Electromagnetic coil and travel switch, the main electromagnetic relay of the main electromagnetic relay assist normally closed interlock and control power supply
Form series loop；From the electromagnetic coil and private key of electromagnetic relay, main electromagnetic relay auxiliary normally open contact and control
Power supply forms series loop；
The main electromagnetic relay auxiliary normally closed interlock and in parallel from electromagnetic relay auxiliary normally open contact；Main electromagnetic relay is logical
Road normally closed interlock and in parallel from electromagnetic relay access normally open contact；
Electromagnetic relay electromagnetic coil circuit is provided with private key, when auxiliary selenoid relay is used for delay meter and assists standby
With, with realize when being not inserted into private key, carry out power-off and only be inserted into private key the case where can just restore electricity.
2. a kind of electric power system power distribution protective device as described in claim 1, it is characterized in that: the auxiliary selenoid relay
Coil is connected by transistor controls, and transistor base is after two phase inverters by the voltage control of capacitor and auxiliary resistance tie point
System；The voltage swing is being controlled after diode and another phase inverter by any master and slave electromagnetic relay auxiliary contact closure
System, when contact closure, auxiliary selenoid relay channel selector closure.
3. a kind of electric power system power distribution protective device as described in claim 1, it is characterized in that: the auxiliary selenoid relay is logical
Controlled switch is acted on by signal lamp after way switch and two master and slave electromagnetic relay access combination switches are in parallel.
4. a kind of electric power system power distribution protective device as described in claim 1, it is characterized in that: the main electromagnetic relay access
Switch is the control switch of normal electric power thus supplied, is the control switch of spare condition, main electromagnetism from electromagnetic relay channel selector
The closure again of relay channel selector needs to close, closing from electromagnetic relay switch contact from electromagnetic relay auxiliary switch
It closes and needs certain electromagnetic force, there is certain stroke distances.
5. power distribution cabinet, it is characterized in that: application such as power distribution protective device of any of claims 1-4, power distribution protection dress
It installs and is placed in cabinet door.
6. based on the working method of power distribution cabinet as claimed in claim 5, it is characterized in that: the following steps are included:
(1) prepare before opening power distribution cabinet, enter and leave private key；
(2) cabinet door is opened, and travel switch movement, main electromagnetic relay coil circuit disconnects, and channel selector normally closed interlock is opened, auxiliary
Switch normally open contact is helped to start to be closed, at the same time, the control capacitor of transistor base discharges, i.e., auxiliary selenoid relay disconnects
Timing starts, and controlled switch still remains closed under the effect of auxiliary selenoid relay at this time, and distribution system power supply is not interrupted；
(3) in the case where being inserted into private key, after main electromagnetic relay auxiliary switch normally open contact closure, from electromagnetic relay
Coil closure, under the influence of a magnetic field, is closed since the normally open contact of electromagnetic relay channel selector and auxiliary switch is all, to
After closure, controlled switch by from electromagnetic relay channel selector effect under remain closed, at the same time, due to from electromagnetism after
Electric appliance auxiliary switch normally open contact is also closed, and the control capacitor discharge off of transistor base is simultaneously recharged, auxiliary electricity
Magnetic relay channel selector still remains closed；
(4) complete in power distribution cabinet power equipment carry out operation after, close cabinet door, travel switch closure, at this time due to from
Electromagnetic relay auxiliary switch normally open contact is closure, and main electromagnetic relay coil circuit is formed, under the influence of a magnetic field, main
The normally closed interlock of electromagnetic relay channel selector and auxiliary switch is all closed, normal with main electromagnetic relay auxiliary switch
Open contact disconnects, and disconnects from electromagnetic relay coil circuit, from the channel selector contact and auxiliary switch contact of electromagnetic relay
All restPose, distribution system service restoration original state.
7. working method as claimed in claim 6, it is characterized in that: such as start in the step (3) there is no private key,
It is disconnected in timing time in auxiliary selenoid relay and is inserted into private key, can still made from electromagnetic relay channel selector and auxiliary
The normally open contact of switch is all closed, distribution system still uninterrupted power supply；
Or, such as always all without private key, after the timing period, auxiliary selenoid relay access is opened in the step (3)
Shutdown is opened, distribution system power failure.
8. working method as claimed in claim 6, it is characterized in that: being such as not inserted into private key, i.e., in the step (4)
Turn off cabinet door, since main electromagnetic relay coil circuit is not formed, main electromagnetic relay channel selector and auxiliary switch it is normal
Closing contact cannot all be closed, and distribution system power supply can not restore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463989.3A CN107275934B (en) | 2017-06-19 | 2017-06-19 | A kind of electric power system power distribution protective device, application and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463989.3A CN107275934B (en) | 2017-06-19 | 2017-06-19 | A kind of electric power system power distribution protective device, application and method |
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| Publication Number | Publication Date |
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| CN107275934A CN107275934A (en) | 2017-10-20 |
| CN107275934B true CN107275934B (en) | 2019-02-15 |
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| CN201710463989.3A Active CN107275934B (en) | 2017-06-19 | 2017-06-19 | A kind of electric power system power distribution protective device, application and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109067435B (en) * | 2018-07-12 | 2021-12-14 | 徐正兴 | Apparatus for near field communication device |
| CN114844727B (en) * | 2022-07-01 | 2022-09-23 | 北京智芯微电子科技有限公司 | Switch and protection circuit, protection system thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364355Y (en) * | 2009-03-12 | 2009-12-16 | 河南省电力公司开封供电公司 | Intelligent monitoring and control device for electric energy metering box |
| CN201852868U (en) * | 2010-08-09 | 2011-06-01 | 河南省电力公司南阳供电公司 | Metering box capable of preventing electricity from being stolen |
| CN104833830A (en) * | 2015-04-24 | 2015-08-12 | 国家电网公司 | Plug-in type electricity larceny prevention metering box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204515895U (en) * | 2015-04-07 | 2015-07-29 | 国网山东夏津县供电公司 | Transformer station's finger-print type emergency release key management box |
-
2017
- 2017-06-19 CN CN201710463989.3A patent/CN107275934B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364355Y (en) * | 2009-03-12 | 2009-12-16 | 河南省电力公司开封供电公司 | Intelligent monitoring and control device for electric energy metering box |
| CN201852868U (en) * | 2010-08-09 | 2011-06-01 | 河南省电力公司南阳供电公司 | Metering box capable of preventing electricity from being stolen |
| CN104833830A (en) * | 2015-04-24 | 2015-08-12 | 国家电网公司 | Plug-in type electricity larceny prevention metering box |
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| CN107275934A (en) | 2017-10-20 |
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Address after: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Applicant after: Electric Power Research Institute of State Grid Shandong Electric Power Company Applicant after: Jinan Power Supply Company, State Grid Shandong Electric Power Company Applicant after: State Grid Corporation of China Address before: 250002 Wang Yue Road, Ji'nan City, Shandong Province, No. 2000 Applicant before: Electric Power Research Institute of State Grid Shandong Electric Power Company Applicant before: Jinan Power Supply Company, State Grid Shandong Electric Power Company Applicant before: State Grid Corporation of China |
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Inventor after: Li Fucun Inventor after: Guo Hongxia Inventor after: Guo Liang Inventor after: Li Hao Inventor after: Wang Zhaojun Inventor after: Liu Lijun Inventor after: Wang Zhelong Inventor after: Wang Zhenhua Inventor after: Ren Dawei Inventor before: Li Fucun Inventor before: Ren Dawei Inventor before: Ji Feng Inventor before: Guo Hongxia Inventor before: Guo Liang Inventor before: Li Hao Inventor before: Wang Zhaojun Inventor before: Liu Lijun Inventor before: Wang Zhelong Inventor before: Wang Zhenhua |
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