CN206628890U - Emergency power supply control system based on sequential control - Google Patents
Emergency power supply control system based on sequential control Download PDFInfo
- Publication number
- CN206628890U CN206628890U CN201720060644.9U CN201720060644U CN206628890U CN 206628890 U CN206628890 U CN 206628890U CN 201720060644 U CN201720060644 U CN 201720060644U CN 206628890 U CN206628890 U CN 206628890U
- Authority
- CN
- China
- Prior art keywords
- control system
- power supply
- emergency
- start circuit
- bavin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
-
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
-
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
-
- 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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
Abstract
The utility model provides a kind of emergency power supply control system based on sequential control, it is single to solve prior art power control system function, the shortcomings such as efficiency is low, it includes the dead electricity self-start circuit and emergency start circuit being connected with security personnel's section, dead electricity self-start circuit is connected with stand-by power supply, and dead electricity self-start circuit includes the PLC control system for failover and routine test and the ECS control systems switched for normal operating mode, emergency start circuit switchs including emergency start, and emergency start switch is connected to the bavin with bavin hair unit and sends out control system, for controlling bavin hair control system to be directly powered to security personnel's section, the utility model has being capable of inlet wire remote monitoring and emergency start function, and there is stability height simultaneously, the advantages that safe operation.
Description
Technical field
It the utility model is related to a kind of security power control system, more particularly to a kind of emergency power supply based on sequential control
Control system.
Background technology
When thermal power plant's generation exchange station service loses, in order to ensure generating set energy safe shutdown, installing is generally required
Quick diesel generating set is as alternating accidemt security power supply.The quick emergency type diesel generating set that starts is not by extraneous power network
The most strong alternating accidemt security power supply of interference, independence.It is different from general industry field, application of the diesel-driven generator in thermal power plant
There is its particularity, it is necessary to adapt to the mode of connection and the control requirement of different 380V security personnel's PC sections, control logic complexity.
In the prior art to the research of emergency power supply system aspects, in technical field of circuit design, concern security personnel are electric mostly
The design and optimization of source system primary connection mode.It is in Operation of Electric Systems field, then mainly each in research emergency power supply system
The switching of interlocking and the method for operation between power supply.
And in the specific implementation that control requires, people have carried out long-term exploration, such as Chinese patent discloses one kind
Power plant is standby to throw protective device [application number：CN201520242301.5], including work PCA sections, public PCA sections, work PCB
Section, public PCB sections, security personnel's EMCCA sections, security personnel EMCCB sections, security personnel EMCCC sections, diesel-driven generator, PLC device, sampling apparatus,
First busbar voltage, the second busbar voltage, triple bus-bar voltage, diesel-driven generator gate out switch, security personnel's section working power feeder line
The public PC sections side switch of switch, security personnel's section stand-by power supply, security personnel's section diesel-generator power sources service entrance switch, security personnel's section working power
Service entrance switch and security personnel's section stand-by power supply service entrance switch；Described work PC A sections pass through described security personnel's section working power feeder line
Switch is connected with the first described busbar voltage and security personnel's section working power service entrance switch respectively, and described public PC A sections pass through
The public PC sections side switch of described security personnel's section stand-by power supply enters with the second described busbar voltage and security personnel's section stand-by power supply respectively
Wiretap connects；Described triple bus-bar voltage, security personnel's section working power service entrance switch and security personnel's section stand-by power supply service entrance switch
Be connected respectively with described security personnel's EMCC A sections, the both ends of described security personnel's section diesel-generator power sources service entrance switch respectively with institute
The security personnel's EMCC A sections and security personnel's EMCC C sections stated connect with PLC devices；Described work PC B sections pass through described security personnel's section
Working power feeder switch is connected with the first described busbar voltage and security personnel's section working power service entrance switch respectively, described public affairs
With PC B sections by the public PC sections side switch of described security personnel's section stand-by power supply respectively with the second described busbar voltage and security personnel
The service entrance switch connection of section stand-by power supply；Described triple bus-bar voltage, security personnel's section working power service entrance switch and security personnel's section are standby
Electric power incoming line switch is connected with described security personnel's EMCCB sections respectively, described security personnel's section diesel-generator power sources service entrance switch
Both ends are connected with described security personnel's EMCC B sections and security personnel's EMCC C sections and PLC device respectively；Described sampling apparatus respectively with
Described diesel-driven generator, PLC device, diesel-driven generator gate out switch, security personnel's section working power feeder switch and security personnel's section are standby
With the public PC sections side switch connection of power supply.
Such scheme is controlled using PLC, PLC modules can not according to the specific requirement swap modules of user,
Design efficiency is low, and such scheme will be switched and completed in dcs with judging accident, depend on alternating accidemt security power supply unduly
In DCS system, the emergency start and judging accident function when DCS failures can not be realized；Single switching device does not adapt to
Complicated electrical primary wiring, diesel-driven generator regularly no-load test function can not be realized, band load test function limitation is big,
The primary connection of complexity can not be adapted to, and function is opened certainly to dead electricity during experiment and had an impact.
Utility model content
The purpose of this utility model be in view of the above-mentioned problems, provide a kind of high stability and security based on sequential control
Emergency power supply control system.
To reach above-mentioned purpose, the utility model employs following technical proposal：It is of the present utility model to be based on sequential control
Emergency power supply control system include with security personnel's section the dead electricity self-start circuit and emergency start circuit that are connected, described dead electricity
Self-start circuit is connected with stand-by power supply, and dead electricity self-start circuit is included for the PLC of failover and routine test controls
System and the ECS control systems switched for normal operating mode, the emergency start circuit switch including emergency start, and should
Emergency start switch is connected to the bavin with bavin hair unit and sends out control system, for controlling bavin hair control system directly to section of ensuring public security
It is powered.
In the above-mentioned emergency power supply control system based on sequential control, described PLC control systems control with ECS
System is connected with bavin hair control system, and stand-by power supply is the bavin hair unit that bavin sends out control system.
Pass through above-mentioned technical proposal, the normal operating mode for realizing emergency power supply system is switched, failover and periodically
That tests is full-automatic, and is not entirely dependent on PLC control system and ECS control systems, and emergency start switch has highest preferential
Level, enable emergency start switch directly can be powered to security personnel's section, avoid fortuitous event.
In the above-mentioned emergency power supply control system based on sequential control, described bavin is sent out control system and opened certainly with dead electricity
It is connected between dynamic circuit for controlling the failure of dead electricity self-start circuit or effective interlocking switch.
In the above-mentioned emergency power supply control system based on sequential control, in addition to in emergency power supply control system
The protective loop that bus connects with inlet wire and bus, primary voltage can be monitored and be protected.
In the above-mentioned emergency power supply control system based on sequential control, described protective loop includes can be to mother
Line, primary voltage have pressure to judge, the overvoltage relay of under-voltage judgement and PT breaking protections, under-voltage relay and it is middle after
Electrical equipment.
In the above-mentioned emergency power supply control system based on sequential control, described PLC control systems include main program
Module, no-load test module, band carry tentative module, dead electricity and open module, switchback standby power supply module and switchback working power mould certainly
Block.
In the above-mentioned emergency power supply control system based on sequential control, described PLC control systems, ECS controls system
System and bavin hair control system are all connected to the DCS system for carrying out remote monitoring to emergency power supply control system.
Pass through above-mentioned technical proposal, each running situation, the result of the action, alarm and the failure of each step sequence are sent to enter in DCS
Row remote monitoring, it is easy to grasp emergency power supply system running state in real time.
Compared with prior art, the utility model has the advantage of：1st, remote control is carried out, security personnel can be grasped in real time
The running status of power-supply system；2nd, voltage monitoring and protection are carried out to bus and inlet wire using protective loop, solves conventional adopt
When being monitored and protected with voltage transmitter output signal, to transmitter and its Dependence Problem of power supply reliability；3rd, it is automatic
Change degree is high, mitigates the workload of staff, while has emergency start function, prevents maloperation；4th, PLC control system
Each functional unit uses modular mode, and applicability is wide, while strengthens the reliability of electrical apparatus control system.
Brief description of the drawings
Fig. 1 is the theory diagram of the utility model embodiment one；
Fig. 2 is the theory diagram of the utility model embodiment two.
In figure, section 1 of ensuring public security；Security personnel A sections 11；Security personnel B sections 12；Dead electricity self-start circuit 2；PLC control system 21；ECS is controlled
System 22 processed；Emergency start circuit 3；Emergency start switch 31；Bavin launching control system 4；Bavin sends out unit 41；Protective loop 5；Interlocking is opened
Close 6；DCS system 7.
Embodiment
Embodiment one
As shown in figure 1, the emergency power supply control system of the present utility model based on sequential control include with ensure public security the phase of section 1
Dead electricity self-start circuit 2 and emergency start circuit 3 even, wherein security personnel's section 1 includes security personnel A sections 11 and security personnel B sections 12, ensure public security A
Dead electricity self-start circuit 2 and emergency start circuit 3 are connected between section 11 and security personnel B sections 12 in a manner of parallel with one another, dead electricity is certainly
Start-up circuit 2 is connected with stand-by power supply, and wherein dead electricity self-start circuit 2 is included for the PLC of failover and routine test controls
System 21 processed and the ECS control systems 22 switched for normal operating mode, emergency start circuit 3 switch including emergency start
31, and emergency start switch 31 is connected to the bavin with bavin hair unit 41 and sends out control system 4, for controlling bavin to send out control system
4 are directly powered to security personnel's section 1, and wherein PLC control system 21 is connected with ECS control systems 22 with bavin hair control system 4
Connect, bavin hair control system 4 receives the same period order from PLC or emergency start switch, realizes the control and simultaneously to bavin hair unit
Net, and the running situation of unit is detected and protected, and in the present embodiment, stand-by power supply and the bavin of bavin hair control system
Unit is sent out to be same, in the present embodiment, when one section of dead electricity in ensure public security A sections or B sections of ensuring public security, PLC control system 21 is controlled
System closes this section of safety cout off power switch, dead electricity section is restored electricity, when ensure public security A sections or security personnel's B sections equal dead electricity when, to prevent
Two sections of buses recover the unstable situation that may trigger simultaneously, take priority combined floodgate mode, certainly, if the switch first to close a floodgate closes
Lock fails, then immediately closes another emergency power supply switch.
Further, based on sequential control emergency power supply control system also include with emergency power supply control system
The protective loop 5 that bus connects with inlet wire and bus, primary voltage can be monitored and be protected, and bus includes security personnel A
Section bus and security personnel's B section buses, inlet wire include security personnel's A sections inlet wire by B section inlet wires of ensuring public security, and the protective loop 5 includes can be right
Bus, primary voltage have pressure to judge, the overvoltage relay of under-voltage judgement and PT breaking protections, under-voltage relay and it is middle after
Electrical equipment, solving can to transmitter and its power supply when being monitored and protected using voltage transmitter output signal in the prior art
By the Dependence Problem of property.
Further, bavin, which is generated, is connected between control system 4 and dead electricity self-start circuit 2 for controlling dead electricity self-starting electric
Road is failed or effective interlocking switch 6, certain interlocking switch can also be placed between security personnel's section and dead electricity self-start circuit, when
Interlocking switch 6 is placed in when exiting state, then it is assumed that the section need not restore electricity, and the dead electricity self-starting function is i.e. in other
Line state, self-starting action will not be also carried out under power failure state；Certainly, due to emergency start switch and bavin hair control system
System is directly connected to, it is not necessary to by interlocking switch, even if interlocking switch is in the state that exits and nor affects on the hair control of emergency start bavin
System processed is powered to security personnel's section.
Further, PLC control system 21 includes main program module, no-load test module, band load tentative module, dead electricity certainly
Module, switchback standby power supply module and switchback working power module are opened, each functional module of PLC control system is individually set
Put, be easy to according to the specific requirement swap modules of the change of the mode of connection and user, applicability are more extensive successively.
Embodiment two
As shown in Fig. 2 the present embodiment is similar with embodiment one, difference is, the PLC controls system in the present embodiment
System, ECS control systems and Chai Fa control systems with radio connection and/or wired connection connected mode be connected in for
The DCS system 7 of remote monitoring is carried out to emergency power supply control system, makes each running situation, the result of the action, the report of each step sequence
Alert and failure is sent carries out remote monitoring in DCS system 7, is easy to grasp emergency power supply system running state in real time.
The normal operating mode that the utility model realizes emergency power supply system is switched, failover and routine test it is complete
Automatically, and PLC control system 21 and ECS control systems 22 are not entirely dependent on, emergency start switch 31 has highest preferential
Level, enable emergency start switch 31 directly can be powered to security personnel's section, avoid fortuitous event.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although security personnel's section 1 has more been used herein；Security personnel A sections 11；Security personnel B sections 12；Dead electricity self-start circuit 2；PLC is controlled
System 21 processed；ECS control systems 22；Emergency start circuit 3；Emergency start switch 31；Bavin launching control system 4；Bavin sends out unit 41；Protect
Protect loop 5；Interlocking switch 6；The grade term of DCS system 7, but it is not precluded from the possibility using other terms.Use these terms
Just for the sake of more easily describing and explaining essence of the present utility model；It is construed as any additional limitation all
Disagreed with the utility model spirit.
Claims (7)
1. a kind of emergency power supply control system based on sequential control, it is characterised in that including the mistake being connected with security personnel's section (1)
Electric self-start circuit (2) and emergency start circuit (3), described dead electricity self-start circuit (2) are connected with stand-by power supply, and dead electricity
Self-start circuit (2) includes the PLC control system (21) for failover and routine test and fallen for normal operating mode
The ECS control systems (22) changed, the emergency start circuit (3) includes emergency start switch (31), and the emergency start switchs
(31) the bavin hair control system (4) with bavin hair unit (41) is connected to, for controlling bavin to send out control system (4) directly to security personnel
Section (1) is powered.
2. the emergency power supply control system according to claim 1 based on sequential control, it is characterised in that described PLC
Control system (21) is connected with ECS control systems (22) with bavin hair control system (4), and stand-by power supply is bavin hair control system
The bavin hair unit (41) of system (4).
3. the emergency power supply control system according to claim 2 based on sequential control, it is characterised in that described bavin hair
It is connected between control system (4) and dead electricity self-start circuit (2) for controlling dead electricity self-start circuit (2) failure or effective
Interlocking switch (6).
4. the emergency power supply control system based on sequential control according to claim 1 or 2 or 3, it is characterised in that also wrap
Include the guarantor for being connected with the bus in emergency power supply control system and inlet wire and bus, primary voltage being monitored and be protected
Protect loop (5).
5. the emergency power supply control system according to claim 4 based on sequential control, it is characterised in that described protection
Loop (5) includes can carrying out having pressure to judge to bus, primary voltage, the overvoltage relay of under-voltage judgement and PT breaking protections,
Under-voltage relay and auxiliary reclay.
6. the emergency power supply control system according to claim 1 based on sequential control, it is characterised in that described PLC
Control system (21) includes main program module, no-load test module, band load tentative module, dead electricity and opens module, switchback standby electricity certainly
Source module and switchback working power module.
7. the emergency power supply control system according to claim 1 based on sequential control, it is characterised in that described PLC
Control system (21), ECS control systems (22) and bavin hair control system (4) are all connected to be used to enter emergency power supply control system
The DCS system (7) of row remote monitoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720060644.9U CN206628890U (en) | 2017-01-18 | 2017-01-18 | Emergency power supply control system based on sequential control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720060644.9U CN206628890U (en) | 2017-01-18 | 2017-01-18 | Emergency power supply control system based on sequential control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206628890U true CN206628890U (en) | 2017-11-10 |
Family
ID=60213306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720060644.9U Expired - Fee Related CN206628890U (en) | 2017-01-18 | 2017-01-18 | Emergency power supply control system based on sequential control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206628890U (en) |
-
2017
- 2017-01-18 CN CN201720060644.9U patent/CN206628890U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106655478B (en) | Low-voltage emergency safety power supply system of household garbage power plant and control method thereof | |
| WO2010078303A2 (en) | Electrical safety shutoff system and devices for photovoltaic modules | |
| CN107276052B (en) | A kind of DC protection system and its control method | |
| KR101306772B1 (en) | A protection system of solar power generation facility | |
| CN102447298B (en) | Mobile intelligent direct current power supply device | |
| CN107425808A (en) | It is a kind of to rapidly switch off system applied to photovoltaic generation | |
| CN102280864B (en) | Post-failure live treatment method for protection device of distribution network system and portable protection device | |
| CN106533148A (en) | Photovoltaic inverter having emergency stop function and emergency stop method for photovoltaic inverter | |
| CN103885410A (en) | Power monitoring system for firefighting device | |
| CN106160440A (en) | A kind of straight-flow system and control unit thereof and detection method | |
| CN103715757A (en) | Back-up type redundant low-voltage power distribution system used for nuclear power station | |
| CN208890467U (en) | A kind of thermal power plant security personnel three power supply of section switching wiring construction | |
| CN109038805B (en) | Method for realizing automatic switching between medium-voltage commercial power and diesel generator set | |
| CN107910855B (en) | A kind of connection applied to intelligent substation cuts small power supply device | |
| CN205846863U (en) | A kind of power plant special remote monitoring system for diesel generator set of black starting-up | |
| CN206628890U (en) | Emergency power supply control system based on sequential control | |
| CN210074867U (en) | Control circuit of standby power supply | |
| CN114400791B (en) | Intelligent photovoltaic power generation monitoring device based on Internet of things and automatic turn-off method | |
| CN106169806B (en) | Prevent power plant from starting the switching locking limiter of spare transformer overload | |
| CN109066604B (en) | Generator low-voltage protection system of million-kilowatt nuclear power station | |
| CN107196407A (en) | A kind of two sections of mutually redundant electric power systems of dc bus and its control method | |
| CN209329687U (en) | A kind of traction substation emergency protection system | |
| CN202488200U (en) | Mobile intelligent DC power supply device | |
| CN205335904U (en) | Modularization fire control emergency power source | |
| CN220019840U (en) | Portable secondary circuit fault detector for diesel generator system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20171110 Termination date: 20190118 |