CN106711944A - Reactive compensation protection device in power transmission and transformation system - Google Patents
Reactive compensation protection device in power transmission and transformation system Download PDFInfo
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- CN106711944A CN106711944A CN201710025949.0A CN201710025949A CN106711944A CN 106711944 A CN106711944 A CN 106711944A CN 201710025949 A CN201710025949 A CN 201710025949A CN 106711944 A CN106711944 A CN 106711944A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 53
- 230000009466 transformation Effects 0.000 title claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 30
- 230000003321 amplification Effects 0.000 claims abstract description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 13
- 238000012423 maintenance Methods 0.000 claims abstract description 8
- 238000004458 analytical method Methods 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000269400 Sirenidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
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- H02J13/0006—
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
Abstract
The invention discloses a reactive compensation protection device in a power transmission and transformation system, and relates to the technical field of protection devices. The reactive compensation protection device in the power transmission and transformation system comprises a central processing system, a voltage collection subsystem, a rated voltage setting unit, a fault protection subsystem and a transmission alarm subsystem, wherein the central processing system is arranged to receive data information, process the data information and send a command, and the voltage collection subsystem comprises a voltage collection processor, an A/D (Analog/Digital) conversion unit, a signal amplification unit, a signal collection unit, a voltage sensor and a digital information storage unit. The reactive compensation protection device in the power transmission and transformation system has the advantages of reasonable design, good application effect and capability of giving an alarm in time, so as to prevent a reactive power compensator from explosion and the like, avoid property damage, improve human safety and remind a maintainer of maintenance in time; and power supply of the reactive power compensator can be shut off automatically when voltage discharged by a discharging coil in the reactive power compensator exceeds a rated voltage value.
Description
Technical field
The present invention relates to protection device technical field, the protection device of reactive-load compensation in specially a kind of power transmission and transformation system.
Background technology
Reactive-load compensator is a kind of compensation device, and the effect undertaken in electronic power system is the power for improving power network
Factor, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves power supply environment.So reactive power is mended
Repay device and an indispensable very important position is in power supply system.Rational selection compensation device, can
To accomplish to reduce to greatest extent the loss of network, improve power grid quality.Conversely, such as selection or improper use, is likely to result in
The factors such as electric power system, voltage pulsation, harmonic wave increase, reactive-load compensator has three kinds of sample modes, power factor type, idle
Power-type, reactive current type.It is actually the selection to reactive power compensating controller to select a kind of that physical control mode.
Controller is the command system of reactive-load compensator, sampling, computing, sends switching signal, parameter setting, measurement, element protection etc.
Function is completed by compensating controller, at present extensively using reactive-load compensator in power transmission and transformation network system, to improve power network
Power factor, reduces the loss of supply transformer and conveying circuit, improves power supplying efficiency, improves power supply environment, but due to nothing
The discharge coil of work(compensator is often subjected to switching overvoltage, and working environment is more severe, and discharge coil in practical application
Do not monitor and safeguard measure, capacitor bank is exploded caused by discharge coil discharge voltage crosses major break down, is susceptible to
Accident potential, endangers personal safety and property safety, and how inventing one kind can monitor and protect reactive-load compensator, reduces accident
Hidden danger, improves the protection device of reactive-load compensation in the power transmission and transformation system of personal safety and property safety, is current the art
Personnel's problem demanding prompt solution.
The content of the invention
It is an object of the invention to provide a kind of protection device of reactive-load compensation in power transmission and transformation system, to solve above-mentioned background
The discharge coil of the general reactive-load compensator proposed in technology is not monitored and safeguard measure, discharge coil discharge voltage mistake
Greatly, capacitor bank is caused to be exploded, be prone to accidents hidden danger, the problem of harm personal safety and property safety.
To achieve the above object, the present invention provides following technical scheme：The protection of reactive-load compensation in a kind of power transmission and transformation system
Device, including：Central processing system, voltage acquisition subsystem, rated voltage setup unit, error protection subsystem and transmission police
Man who brings news of appointment's system；
The central processing system receives data message, processing data information, and sends instruction；
The voltage acquisition subsystem includes that voltage acquisition processor, A/D converting units, signal amplification unit, signal are adopted
Collection unit, voltage sensor and digital information memory cell, discharge coil in the voltage sensor collection reactive-load compensator
Discharge voltage, and the signal transmission that will be gathered, to signal gathering unit, the signal gathering unit gives the signal transmission of collection
Signal amplification unit, the signal amplification unit is transferred to A/D converting units after signal is amplified, the A/D converting units will
The voltage analog signal of collection is transferred to voltage acquisition processor, the voltage acquisition processor docking after being converted into data signal
By digital voltage information transfer to digital information memory cell after the digital voltage signal analysis and computing of receipts, digital voltage is believed
Breath storage, the digital information memory cell is connected with central processing system；
The rated voltage setup unit sets the critical voltage value of overvoltage protection；
The error protection subsystem include error protection processor, protection instruction reception unit, controlling switch unit and
Reactive-load compensator power supply, if the voltage of voltage acquisition subsystem collection exceedes the critical voltage of rated voltage setup unit setting
Value, then central processing system is to protection instruction reception unit transmission protection instruction, the guarantor that the protection instruction reception unit is received
Finger shield order is sent to error protection processor, and the error protection processor sends to controlling switch unit and switches off instruction,
After what the controlling switch unit reception error protection processor sent switches off instruction, the controlling switch unit cuts off nothing
Work(compensator power supply, makes reactive-load compensator power supply stop as reactive-load compensator is powered, described to protect instruction reception unit with center
Processing system is connected；
The transmission alarm sub-system is opened including transmitting alarm processor, alarm command receiving unit, being wirelessly transferred control
Pass, wireless transmission unit and siren, if the voltage of voltage acquisition subsystem collection exceedes the setting of rated voltage setup unit
Critical voltage value, then central processing system is to alarm command receiving unit transmission alarm command, the alarm command receiving unit
After receiving alarm signal, transmission alarm processor, the police that the transmission alarm processor analysis is received are given by alarm signal transport
After report instruction, switch closure command is sent to controlling switch is wirelessly transferred, the controlling switch that is wirelessly transferred makes to be wirelessly transferred list
Unit is powered, and the wireless transmission unit sends alarm command to siren, and the siren sends alarm, and the alarm command connects
Unit is received to be connected with central processing system.
Preferably, the controlling switch that is wirelessly transferred is for solenoid-operated switch.
Preferably, the siren is fixedly mounted in alarm room, and when siren sounds, the guard of alarm room knows
Road reactive-load compensator breaks down, and notifies that maintenance personal is repaired.
Preferably, the voltage sensor is fixedly mounted on around the discharge coil in reactive-load compensator.
Compared with prior art, the beneficial effects of the invention are as follows：The protection device of reactive-load compensation in this kind of power transmission and transformation system,
Reasonable in design, using effect is good, when the voltage that the discharge coil in reactive-load compensator is released exceedes load voltage value, can be certainly
Dynamic cut-out reactive-load compensator power supply, and alarm is timely sent, prevent reactive-load compensator from the harm such as blast occurring, it is to avoid property is damaged
Become estranged raising personal safety, and timely remind maintenance personal's maintenance.
Brief description of the drawings
Fig. 1 is present system theory diagram；
Fig. 2 is voltage acquisition subsystem diagram of the present invention；
Fig. 3 is error protection subsystem diagram of the present invention；
Fig. 4 is present invention transmission alarm sub-system block diagram.
In figure：1 central processing system, 2 voltage acquisition subsystems, 21 voltage acquisition processors, 22A/D converting units, 23
Signal amplification unit, 24 signal gathering units, 25 voltage sensors, 26 digital information memory cell, the setting of 3 rated voltages are single
It is unit, 4 error protection subsystems, 41 error protection processors, 42 protection instruction reception units, 43 controlling switch units, 44 idle
Compensator power supply, 5 transmission alarm sub-systems, 51 transmission alarm processors, 52 alarm command receiving units, 53 are wirelessly transferred control
Switch, 54 wireless transmission units, 55 sirens.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1-4 are referred to, the present invention provides a kind of technical scheme：A kind of protection dress of reactive-load compensation in power transmission and transformation system
Put, including：Central processing system 1, voltage acquisition subsystem 2, rated voltage setup unit 3, error protection subsystem 4 and transmission
Alarm sub-system 5；
The central processing system 1 receives data message, processing data information, and sends instruction；
The voltage acquisition subsystem 2 include voltage acquisition processor 21, A/D converting units 22, signal amplification unit 23,
Signal gathering unit 24, voltage sensor 25 and digital information memory cell 26, the collection reactive-load compensation of the voltage sensor 25
The discharge voltage of discharge coil in device, and the signal transmission that will be gathered is to signal gathering unit 24, the signal gathering unit 24
To signal amplification unit 23, the signal amplification unit 23 is transferred to A/D conversions to the signal transmission that will be gathered after signal is amplified
Unit 22, the A/D converting units 22 are transferred at voltage acquisition after the voltage analog signal of collection is converted into data signal
Reason device 21, by digital voltage information transfer after the digital voltage signal analysis and computing of 21 pairs of receptions of the voltage acquisition processor
To digital information memory cell 26, digital information of voltage is stored, the digital information memory cell 26 and central processing system 1
Connection；
The rated voltage setup unit 3 sets the critical voltage value of overvoltage protection；
The error protection subsystem 4 includes error protection processor 41, protection instruction reception unit 42, controlling switch list
Unit 43 and reactive-load compensator power supply 44, if the voltage of the collection of voltage acquisition subsystem 2 exceedes the setting of rated voltage setup unit 3
Critical voltage value, then central processing system 1 is to the protection transmission protection instruction of instruction reception unit 42, the protection command reception list
The protection instruction that unit 42 receives is sent to error protection processor 41, and the error protection processor 41 is to controlling switch unit 43
Transmission switches off instruction, after what the reception error protection of controlling switch unit 43 processor 41 sent switches off instruction,
The cut-out reactive-load compensator of controlling switch unit 43 power supply 44, stops reactive-load compensator power supply 44 for reactive-load compensator is supplied
Electricity, the protection instruction reception unit 42 is connected with central processing system 1；
The transmission alarm sub-system 5 includes transmission alarm processor 51, alarm command receiving unit 52, is wirelessly transferred control
System switch 53, wireless transmission unit 54 and siren 55, if the voltage of the collection of voltage acquisition subsystem 2 sets more than rated voltage
The critical voltage value of the setting of unit 3, then central processing system 1 is to the transmission alarm command of alarm command receiving unit 52, the police
After report instruction reception unit 52 receives alarm signal, transmission alarm processor 51, the transmission alarm are given by alarm signal transport
After the alarm command that the analysis of processor 51 is received, switch closure command, the wireless biography are sent to controlling switch 53 is wirelessly transferred
Defeated controlling switch 53 makes wireless transmission unit 54 be powered, and the wireless transmission unit 54 sends alarm command, institute to siren 55
State siren 55 and send alarm, the alarm command receiving unit 52 is connected with central processing system 1.
Wherein, for solenoid-operated switch, the siren 55 is fixedly mounted on alarm to the controlling switch 53 that is wirelessly transferred
Interior, when siren 55 sounds, the guard of alarm room knows that reactive-load compensator breaks down, and notifies that maintenance personal is carried out
Maintenance, the voltage sensor 25 is fixedly mounted on around the discharge coil in reactive-load compensator.
Operation principle：The discharge voltage of discharge coil in the collection reactive-load compensator of voltage sensor 25, and the letter that will be gathered
Signal gathering unit 24 number is transferred to, the signal transmission that signal gathering unit 24 will be gathered to signal amplification unit 23, put by signal
Big unit 23 is transferred to A/D converting units 22 after signal is amplified, the voltage analog signal conversion that A/D converting units 22 will be gathered
Be transferred to voltage acquisition processor 21 after into data signal, the digital voltage signals analysis of 21 pairs of receptions of voltage acquisition processor and
By digital voltage information transfer to digital information memory cell 26 after computing, digital information of voltage is stored, central processing system 1
Obtain the voltage digital information of the memory storage of digital information memory cell 26, and with the police obtained from rated voltage setup unit 3
Report critical voltage value contrast, if the voltage digital information of collection exceedes alarm critical voltage value, central processing system 1 is to protection
Instruction reception unit 42 sends protection instruction, and sends alarm command to alarm command receiving unit 52, protects command reception list
Unit 42 is sent to error protection processor 41 after receiving protection instruction, and error protection processor 41 sends to controlling switch unit 43
Instruction is switched off, after what the reception error protection of controlling switch unit 43 processor 41 sent switches off instruction, controlling switch
The cut-out reactive-load compensator of unit 43 power supply 44, makes reactive-load compensator power supply 44 stop being powered for reactive-load compensator, makes reactive-load compensation
Device is stopped, and after alarm command receiving unit 52 receives alarm signal, transmission alarm processor 51 is given by alarm signal transport,
After the alarm command that the transmission analysis of alarm processor 51 is received, switch closure command, nothing are sent to controlling switch 53 is wirelessly transferred
Line transmission controlling switch 53 makes wireless transmission unit 54 be powered, and wireless transmission unit 54 sends alarm command to siren 55, alert
Report device 55 sends alarm, and the guard of reminder alarm room, reactive-load compensator breaks down, and guard notifies maintenance personal couple
Reactive-load compensator is repaired.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding can carry out various changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (4)
1. in a kind of power transmission and transformation system reactive-load compensation protection device, it is characterised in that including：Central processing system (1), voltage
Acquisition subsystem (2), rated voltage setup unit (3), error protection subsystem (4) and transmission alarm sub-system (5)；
The central processing system (1) receives data message, processing data information, and sends instruction；
The voltage acquisition subsystem (2) includes voltage acquisition processor (21), A/D converting units (22), signal amplification unit
(23), signal gathering unit (24), voltage sensor (25) and digital information memory cell (26), the voltage sensor (25)
The discharge voltage of discharge coil in collection reactive-load compensator, and signal gathering unit (24) is given by the signal transmission for gathering, it is described
The signal transmission for gathering is given signal amplification unit (23) by signal gathering unit (24), and the signal amplification unit (23) is by signal
A/D converting units (22) are transferred to after amplification, the voltage analog signal of collection is converted into numeral by the A/D converting units (22)
Voltage acquisition processor (21), digital voltage signal analysis of the voltage acquisition processor (21) to receiving are transferred to after signal
With by digital voltage information transfer to digital information memory cell (26), digital information of voltage is stored, the numeral after computing
Information memory cell (26) is connected with central processing system (1)；
The rated voltage setup unit (3) sets the critical voltage value of overvoltage protection；
The error protection subsystem (4) includes error protection processor (41), protection instruction reception unit (42), controlling switch
Unit (43) and reactive-load compensator power supply (44), if the voltage of voltage acquisition subsystem (2) collection exceedes rated voltage and sets single
The critical voltage value of first (3) setting, then central processing system (1) is to protection instruction reception unit (42) transmission protection instruction, institute
The protection instruction for stating protection instruction reception unit (42) reception is sent to error protection processor (41), the error protection treatment
Device (41) sends to controlling switch unit (43) and switches off instruction, and the controlling switch unit (43) receives error protection treatment
After what device (41) sent switches off instruction, the controlling switch unit (43) cuts off reactive-load compensator power supply (44), makes idle
Compensator power supply (44) stops being powered for reactive-load compensator, described to protect instruction reception unit (42) and central processing system (1)
Connection；
Transmission alarm sub-system (5) is including transmitting alarm processor (51), alarm command receiving unit (52), being wirelessly transferred
Controlling switch (53), wireless transmission unit (54) and siren (55), if the voltage of voltage acquisition subsystem (2) collection exceedes volume
Determine the critical voltage value of voltage setup unit (3) setting, then central processing system (1) sends to alarm command receiving unit (52)
Alarm command, after the alarm command receiving unit (52) receives alarm signal, transmission alarm processing is given by alarm signal transport
Device (51), after the alarm command that transmission alarm processor (51) analysis is received, sends to controlling switch (53) is wirelessly transferred
Switch closure command, the controlling switch (53) that is wirelessly transferred makes wireless transmission unit (54) be powered, the wireless transmission unit
(54) alarm command is sent to siren (55), the siren (55) sends alarm, the alarm command receiving unit (52)
It is connected with central processing system (1).
2. in a kind of power transmission and transformation system according to claim 1 reactive-load compensation protection device, it is characterised in that：The nothing
It is solenoid-operated switch that line transmits controlling switch (53).
3. in a kind of power transmission and transformation system according to claim 1 reactive-load compensation protection device, it is characterised in that：The police
Report device (55) is fixedly mounted in alarm room, and when siren (55) sounds, the guard of alarm room knows reactive-load compensator
Break down, notify that maintenance personal is repaired.
4. in a kind of power transmission and transformation system according to claim 1 reactive-load compensation protection device, it is characterised in that：The electricity
Pressure sensor (25) is fixedly mounted on around the discharge coil in reactive-load compensator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025949.0A CN106711944A (en) | 2017-01-13 | 2017-01-13 | Reactive compensation protection device in power transmission and transformation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710025949.0A CN106711944A (en) | 2017-01-13 | 2017-01-13 | Reactive compensation protection device in power transmission and transformation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106711944A true CN106711944A (en) | 2017-05-24 |
Family
ID=58908444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710025949.0A Pending CN106711944A (en) | 2017-01-13 | 2017-01-13 | Reactive compensation protection device in power transmission and transformation system |
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| Country | Link |
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| CN (1) | CN106711944A (en) |
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| CN102508128A (en) * | 2011-10-24 | 2012-06-20 | 天津大学 | Switch cabinet local discharge transient-to-ground voltage detection system based on wireless network |
| CN102509431A (en) * | 2012-01-04 | 2012-06-20 | 上海大亚科技有限公司 | Wireless alarm terminal and method for realizing control on transmission of wireless alarm signals |
| CN202817707U (en) * | 2012-04-01 | 2013-03-20 | 杭州得诚电力科技有限公司 | A protective circuit of an intelligent low-voltage reactive compensation control system |
| CN204166671U (en) * | 2014-11-14 | 2015-02-18 | 天津银箭科技有限公司 | A kind of ZigBee wireless emergency alarm |
| CN104808085A (en) * | 2015-04-21 | 2015-07-29 | 诸暨市东白电力设备制造有限公司 | Low-voltage reactive compensation overvoltage protection test circuit and overvoltage protection test method |
| EP2899821A3 (en) * | 2013-09-12 | 2016-03-09 | Schneider Electric Industries SAS | Control device and electric protection device |
| CN205195288U (en) * | 2015-12-10 | 2016-04-27 | 杭州沃伦森电气有限公司 | Low pressure reactive compensation system with overvoltage protection |
-
2017
- 2017-01-13 CN CN201710025949.0A patent/CN106711944A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508128A (en) * | 2011-10-24 | 2012-06-20 | 天津大学 | Switch cabinet local discharge transient-to-ground voltage detection system based on wireless network |
| CN102509431A (en) * | 2012-01-04 | 2012-06-20 | 上海大亚科技有限公司 | Wireless alarm terminal and method for realizing control on transmission of wireless alarm signals |
| CN202817707U (en) * | 2012-04-01 | 2013-03-20 | 杭州得诚电力科技有限公司 | A protective circuit of an intelligent low-voltage reactive compensation control system |
| EP2899821A3 (en) * | 2013-09-12 | 2016-03-09 | Schneider Electric Industries SAS | Control device and electric protection device |
| CN204166671U (en) * | 2014-11-14 | 2015-02-18 | 天津银箭科技有限公司 | A kind of ZigBee wireless emergency alarm |
| CN104808085A (en) * | 2015-04-21 | 2015-07-29 | 诸暨市东白电力设备制造有限公司 | Low-voltage reactive compensation overvoltage protection test circuit and overvoltage protection test method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |