CN107834498A - Substation secondary automation equipment power supply smart managing and control system and management-control method - Google Patents
Substation secondary automation equipment power supply smart managing and control system and management-control method Download PDFInfo
- Publication number
- CN107834498A CN107834498A CN201711063663.8A CN201711063663A CN107834498A CN 107834498 A CN107834498 A CN 107834498A CN 201711063663 A CN201711063663 A CN 201711063663A CN 107834498 A CN107834498 A CN 107834498A
- Authority
- CN
- China
- Prior art keywords
- automation equipment
- power supply
- secondary automation
- spaced apart
- intelligent
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0061—Details of emergency protective circuit arrangements concerning transmission of signals
- H02H1/0084—Details of emergency protective circuit arrangements concerning transmission of signals by means of pilot wires or a telephone network; watching of these wires
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0092—Details of emergency protective circuit arrangements concerning the data processing means, e.g. expert systems, neural networks
-
- 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
- H02H7/22—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 for distribution gear, e.g. bus-bar systems; for switching devices
-
- 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
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
Landscapes
- Engineering & Computer Science (AREA)
- Artificial Intelligence (AREA)
- Evolutionary Computation (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of substation secondary automation equipment power supply smart managing and control system and management-control method, managing and control system includes management server, remote-controlled power supply is spaced apart, the management program module in management server；Management program module includes database, preposition communication module, intelligent analysis module, configuration instrument；Management program module can be by reading expert tactics storehouse information, with reference to secondary automation equipment actual motion state, infer corresponding secondary automation equipment self- recoverage treating method, and by way of management and control substation secondary automation equipment power switch, the fast self-recovery of secondary automation equipment temporary fault is realized, being capable of fast positioning and the secondary automation equipment failure of processing.
Description
Technical field
The invention belongs to electrical technology field, more particularly to power supply management and control technical field.
Background technology
In recent years, with the fast development of State Grid's system, Intelligent transformer station, regulation and control integration, extra-high voltage project,
Increase on a large scale in the quantity of unattended station.Run greatly for realization, general overhaul System Construction, secondary automation in transformer station
Equipment requirement realizes the highly integrated and information sharing of whole system, meets flattening, the monitoring requirement of integration, for production
Operation, safety supervision management, scheduling decision personnel provide each required auxiliary information support.Power transformation O＆M station operator on duty connects at present
The United Dispatching commander of scheduled control centre, while to unattended substation in terms of power supply area, geographical position, traffic
Give centralized maintenance management.With the increase of transformer station's number, the increase of operation maintenance personnel does not catch up with grid equipment development much
Speed, the pressure of O＆M is increasing.
Secondary automation equipment in transformer station is continuously run for a long time, can be because component temperature is too high, internal memory overflows, abnormal
The reason such as network congestion or equipment design defect that network message causes causes secondary automation equipment deadlock, communicating interrupt, program
The temporary fault of endless loop etc, make transformer station can not be to the primary equipment state effective monitoring at scene.Most of such failures,
Only need can solve temporary transient failure to secondary automation equipment power-off restarting.For unattended station, need often
Operation maintenance personnel, which takes a long time to drive to rush to the scene, completes the power-off restarting work of simple secondary automation equipment, both shadow
The speed for ringing troubleshooting consumes substantial amounts of manpower and materials again, is unfavorable for the stable operation of power network.
Therefore, it is necessary to which a kind of new technical scheme is to solve the above problems.
The content of the invention
It is an object of the invention to provide a kind of substation secondary automation equipment Intelligent management of power system, pass through management and control
The mode of substation secondary automation equipment power switch, realize the fast self-recovery of secondary automation equipment temporary fault.
The present invention also provides a kind of management-control method based on above-mentioned managing and control system.
To reach above-mentioned purpose, the present invention can adopt the following technical scheme that：
A kind of substation secondary automation equipment power supply smart managing and control system, it is characterised in that including management server, can
Remote circuit is spaced apart；The management server includes management program module；At least possess 4 tunnels on intelligent electric power management server
Ethernet interface and 20 road serial ports；Remote-controlled power supply, which is spaced apart, supports RS485 communications；
Intelligent electric power management server forms star-like Power Supply Monitoring network using RS485 connections, and power supply, which is spaced apart, to be passed through
Communicated on RS485 connections with intelligent electric power management server；The power supply concatenated on every RS485 connection, which is spaced apart, must not exceed
8；Remote-controlled power supply, which is spaced apart, is serially connected in transformer station each on the electric power loop of secondary automation equipment, what remote-controlled power supply was spaced apart
Division directly controls the break-make of secondary automation equipment power supply；
The management program module include database, preposition communication module, intelligent analysis module, configuration instrument, database,
Preposition communication module, intelligent analysis module, configuration instrument pass through data/address bus interactive information between each other；
Database is depositing secondary running state of automated equipment information, remote-controlled power switch location status information, each
Secondary automation equipment and remote-controlled power switch communication protocol and address, intelligent expert storehouse policy information, operation note and auxiliary
Inferred results；
Preposition communication module is handed over to complete the data of the secondary automation equipment intelligent power management system of whole transformer station
Mutually；
Intelligent analysis module is to by reading expert tactics storehouse information, with reference to secondary automation equipment actual motion shape
State, infer corresponding secondary automation equipment self- recoverage treating method；
Configuration instrument is used to carry out database configuration, including the information such as configuration preposition required communication protocol, address, expert
Intellectual analysis strategy, all kinds of status informations, user management authority.
Wherein, substation secondary automation equipment includes comprehensive automation system of transformer substation monitoring backstage, telecontrol communication machine, cell
Master control and station in data switching exchane, i.e., remote circuit be spaced apart be connected on comprehensive automation system of transformer substation monitoring backstage, telecontrol communication machine,
In cell master control and station on the electric power loop of data switching exchane, power supply smart control is participated in.
Wherein, preposition communication module supports Ethernet and serial port, support RS485, IEC61850, IEC103,
All kinds of communication protocols such as IEC104.
Beneficial effect：The substation secondary automation equipment Intelligent management of power system of the present invention passes through management and control transformer station two
The mode of secondary automation equipment power switch, the fast self-recovery of secondary automation equipment temporary fault is realized, can quickly be determined
Position and the secondary automation equipment failure of processing.
Management-control method provided by the invention using above-mentioned managing and control system can adopt the following technical scheme that：
Detection substation secondary device running situation in real time, with reference to expert tactics information, infers that secondary automation equipment is
It is no to be in temporary failed state；When judging that temporary fault occurs in equipment, trial jump mode is taken to carry out failure to secondary device certainly
Recovery is handled；
Secondary device self- recoverage tupe includes：Prompting-type and automatic execution type；
Prompting-type refers to that processing information is pushed to a distant place by substation secondary automation equipment intelligent power management system
Operation maintenance personnel, operation maintenance personnel is prompted to be remotely controlled the distant place point, closing operation that power supply is spaced apart manually；
Automatic perform refers to that substation secondary automation equipment intelligent power management system is handled according to intelligent analysis module
As a result, be spaced apart automatically for the remote circuit in transformer station carry out point, closing operation, and giving distant place fortune on operation final result
Dimension personnel.
Wherein, trial jump refers to when secondary automation equipment intelligent power management system judges that certain secondary automation equipment may
When there is transitory device failure, make the device powers down by the way of disconnecting remote circuit and being spaced apart, after determining device powers down,
Again remote circuit is closed to be spaced apart, after secondary automation equipment normal operation, failure judgement whether self-healing one kind side
Formula.
Brief description of the drawings
Fig. 1 is substation secondary automation equipment intelligent power management system Organization Chart.
Fig. 2 is substation secondary automation equipment intelligent power management system configuration configuration interface figure.
Fig. 3 is prompting-type operational flowchart.
Fig. 4 is automatic type operational flowchart.
Embodiment
To be easy to understand the technical means, the inventive features, the objects and the advantages of the present invention, with reference to
Embodiment, the present invention is expanded on further.
It will be seen from figure 1 that system tray of the substation secondary automation equipment intelligent power management system in transformer station
Structure deployment scenarios, intelligent electric power management server are arranged in station level, each secondary automatic makeup of access station level Ethernet collection
The relevant operational state information and substation secondary monitoring system monitoring host computer put and scheduling telecontrol communication machine communication.Remote circuit is empty
Open string is connected on the installation's power source loop of all secondary automation equipments of transformer station, passes through RS458 connections and substation secondary
Automation equipment intelligent power management system communicates.
Fig. 2 is substation secondary automation equipment intelligent power management system configuration configuration interface figure, utilizes configuration instrument
Configure the communications parameter that the device communications parameter of each secondary automation equipment and its remote circuit are spaced apart；Secondary automation equipment fortune
Row status information records；Expert intelligence policy information records；All records are stored in database.Wherein expert intelligence strategy
In information configuration, the same equipment that is spaced apart can have a plurality of strategy record, be between each condition in every strategy and logical relation,
It is between each bar strategy or logical relation.Every record can select different processing modes, substation secondary automation equipment
Intelligent power management system automatically controls, or distally transports inspection personnel's push operation prompt message.
Fig. 3 is prompting-type operational flowchart, substation secondary automation equipment intelligent power management system Timing Processing from
The field device running state data of preposition module collection, carry out plant failure with reference to the corresponding strategy in experts database and study and judge.When
When meeting policy condition, distally O＆M sends control and opens faulty equipment power supply and opens secondary automation equipment intelligent power management system
The prompt message of pass, sends guidance command by distant place operation maintenance personnel and separates faulty equipment power supply and be spaced apart manually, and secondary automation is set
Standby intelligent power management system judges that power supply is spaced apart after correct separate distally O＆M and sent and closes faulty equipment power switch
Prompt message, sends guidance command by square operation maintenance personnel and closes the power supply and be spaced apart manually, secondary automation equipment intelligent power pipe
Reason system judge power supply be spaced apart accurately close, Failure elimination operate terminate.In case of a distant place point, closing operation can not be just in operating process
Failure is without situation about eliminating after really performing or operate, then decision maker failure is nonvolatile failure, and device can not self- recoverage two
Distally O＆M sends prompt message to secondary automation equipment intelligent power management system, prompts operation maintenance personnel to go to live artificial place
Manage equipment fault.
Such as, there is the measuring and controlling equipment of 110kV circuits 1 in transformer station, the condition that its temporary fault judges is " net card failure " signal
To close position, when one piece of network interface card breaks down in equipment, the measuring and controlling equipment of 110kV circuits 1 sends " net card failure " signal and puts conjunction, meets
Secondary automation equipment intelligent power management system trigger action condition, secondary automation equipment intelligent power management system pass through
Preposition module sends the prompt message of " the secondary device net card failure of 110kV circuits 1 separates power supply and is spaced apart " to telemechanical, is transported by a distant place
Dimension personnel send downwards the order that control divides the secondary device power supply of 110kV circuits 1, by secondary automation equipment intelligent electric power management system
Unite and develop remote control point order to the Remote Control Air of appropriate address, pull open the secondary device of 110kV circuits 1.Confirm 110kV circuits 1 two
After secondary device correctly pulls open, secondary automation equipment intelligent power management system is sent to telemechanical " closes 110kV circuits 1 two times
Device power supply (DPS) is spaced apart " prompt message, performed by distant place operation maintenance personnel and close the order of the secondary device power supply of 110kV circuits 1.Really
Recognize the secondary device power supply of 110kV circuits 1 and be spaced apart and correctly close, secondary automation equipment intelligent power management system judges 110kV
Whether the secondary device net card failure signal of circuit 1 eliminates, if having eliminated, and judges that the failure is a temporary fault, is grasped
Note down and recorded with fault log.The failure is judged if failure still has for nonvolatile failure, and distally O＆M is sent
The information of " the secondary device net card failure of 110kV circuits 1 can not eliminate ", notice distant place operation maintenance personnel go to the event of in-situ processing network interface card
Barrier.
Fig. 4 is automatic type operational flowchart, substation secondary automation equipment intelligent power management system Timing Processing from
The field device running state data of preposition module collection, carry out plant failure with reference to the corresponding strategy in experts database and study and judge.When
When meeting policy condition, substation secondary automation equipment intelligent power management system is spaced apart to corresponding object power supply sends remote control
Point order, it is to be confirmed be spaced apart behind point position be spaced apart again to device object power supply send remote control close order, confirm it is secondary automation set
After standby normal operation, again failure judgement whether self- recoverage, be determined as temporary fault record operation note if failure self- recoverage
Record and journal file, are otherwise determined as nonvolatile failure, the prompt message of field device failure are sent to scheduling.
Such as, there is the measuring and controlling equipment of 110kV circuits 1 in transformer station, the condition that its temporary fault self- recoverage judges is device operating mode
Exit, after substation secondary automation equipment intelligent power management system detects that plant failure exits, from trend 110kV lines
The measuring and controlling equipment power supply of road 1, which is spaced apart, sends remote control point order, when determining device power supply be spaced apart for point position after, close device power supply (DPS) automatically
It is spaced apart, determines that the measuring and controlling equipment of 110kV circuits 1 can be after normal operation, whether the measuring and controlling equipment operating mode of detection 110kV circuits 1 puts into.If
Trial jump power supply is spaced apart rear equipment working condition still without input, equipment fault can not self- recoverage, then distally O＆M sends " 110kV lines
The measuring and controlling equipment operating mode of road 1 is exited and can not recovered " prompt message, prompt operation maintenance personnel go to in-situ processing failure.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
- A kind of 1. substation secondary automation equipment power supply smart managing and control system, it is characterised in that including management server, can be distant Control power supply is spaced apart；The management server includes management program module；At least possess on intelligent electric power management server 4 tunnels with Too network interface and 20 road serial ports；Remote-controlled power supply, which is spaced apart, supports RS485 communications；Intelligent electric power management server forms star-like Power Supply Monitoring network using RS485 connections, and power supply is spaced apart to be led to by RS485 Interrogate and communicated on line with intelligent electric power management server；The power supply concatenated on every RS485 connection, which is spaced apart, must not exceed 8；Can Remote circuit, which is spaced apart, is serially connected in transformer station each on the electric power loop of secondary automation equipment, and the division that remote-controlled power supply is spaced apart is straight Connect the break-make for controlling secondary automation equipment power supply；The management program module includes database, preposition communication module, intelligent analysis module, configuration instrument, database, preposition Communication module, intelligent analysis module, configuration instrument pass through data/address bus interactive information between each other；Database is depositing secondary running state of automated equipment information, remote-controlled power switch location status information, each secondary Automation equipment and remote-controlled power switch communication protocol and address, intelligent expert storehouse policy information, operation note and auxiliary are inferred As a result；Preposition communication module is completing the data interaction of the secondary automation equipment intelligent power management system of whole transformer station；Intelligent analysis module is by reading expert tactics storehouse information, with reference to secondary automation equipment actual motion state, pushing away Disconnected corresponding secondary automation equipment self- recoverage treating method；Configuration instrument is used to carry out database configuration, including the information such as configuration preposition required communication protocol, address, expert intelligence Analysis strategy, all kinds of status informations, user management authority.
- 2. managing and control system according to claim 1, it is characterised in that：It is comprehensive that substation secondary automation equipment includes transformer station Data switching exchane in conjunction automated system monitoring backstage, telecontrol communication machine, cell master control and station, i.e., remote circuit, which is spaced apart, is connected on power transformation In complex automatic system of standing monitoring backstage, telecontrol communication machine, cell master control and station on the electric power loop of data switching exchane, power supply is participated in Intelligent control.
- 3. managing and control system according to claim 1, it is characterised in that：Preposition communication module supports Ethernet and serial communication Mode, support all kinds of communication protocols such as RS485, IEC61850, IEC103, IEC104.
- A kind of 4. management-control method using the managing and control system as any one of claims 1 to 3, it is characterised in that：Detection substation secondary device running situation in real time, with reference to expert tactics information, infers whether secondary automation equipment is located In temporary failed state；When judging that temporary fault occurs in equipment, trial jump mode is taken to carry out failure self- recoverage to secondary device Processing；Secondary device self- recoverage tupe includes：Prompting-type and automatic execution type；Prompting-type refers to that substation secondary automation equipment intelligent power management system is pushed to processing information the O＆M in a distant place Personnel, operation maintenance personnel is prompted to be remotely controlled the distant place point, closing operation that power supply is spaced apart manually；Automatic perform refers to substation secondary automation equipment intelligent power management system according to intelligent analysis module result, Be spaced apart automatically for the remote circuit in transformer station carry out point, closing operation, and giving distant place O＆M people on operation final result Member.
- 5. management-control method according to claim 4, it is characterised in that：Trial jump refers to work as secondary automation equipment intelligent power When management system judges that certain secondary automation equipment is likely to occur transitory device failure, using disconnecting the side that is spaced apart of remote circuit Formula makes the device powers down, after determining device powers down, is spaced apart closing remote circuit again, treats secondary automation equipment normal operation Afterwards, the whether self-healing a kind of mode of failure judgement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711063663.8A CN107834498B (en) | 2017-11-02 | 2017-11-02 | Substation secondary automation equipment power supply smart managing and control system and management-control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711063663.8A CN107834498B (en) | 2017-11-02 | 2017-11-02 | Substation secondary automation equipment power supply smart managing and control system and management-control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107834498A true CN107834498A (en) | 2018-03-23 |
| CN107834498B CN107834498B (en) | 2019-06-14 |
Family
ID=61651622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711063663.8A Active CN107834498B (en) | 2017-11-02 | 2017-11-02 | Substation secondary automation equipment power supply smart managing and control system and management-control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107834498B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000245055A (en) * | 1999-02-19 | 2000-09-08 | Yazaki Corp | Control system of power source mounted on vehicle |
| CN201860169U (en) * | 2010-07-20 | 2011-06-08 | 南京胜太迪玛斯电力***有限公司 | Computer monitoring anti-error operating system in intelligent transformer substation |
| CN102403791A (en) * | 2011-08-05 | 2012-04-04 | 上海艾能电力工程有限公司 | Digitized transformer substation |
| CN204258280U (en) * | 2014-12-12 | 2015-04-08 | 廖年 | Boundary switch controller |
| CN107302264A (en) * | 2017-07-06 | 2017-10-27 | 国电南瑞科技股份有限公司 | A kind of substation secondary automation equipment stable operation management-control method |
-
2017
- 2017-11-02 CN CN201711063663.8A patent/CN107834498B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000245055A (en) * | 1999-02-19 | 2000-09-08 | Yazaki Corp | Control system of power source mounted on vehicle |
| CN201860169U (en) * | 2010-07-20 | 2011-06-08 | 南京胜太迪玛斯电力***有限公司 | Computer monitoring anti-error operating system in intelligent transformer substation |
| CN102403791A (en) * | 2011-08-05 | 2012-04-04 | 上海艾能电力工程有限公司 | Digitized transformer substation |
| CN204258280U (en) * | 2014-12-12 | 2015-04-08 | 廖年 | Boundary switch controller |
| CN107302264A (en) * | 2017-07-06 | 2017-10-27 | 国电南瑞科技股份有限公司 | A kind of substation secondary automation equipment stable operation management-control method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107834498B (en) | 2019-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109617241B (en) | Intelligent sequential control system and method based on panoramic data in transformer substation | |
| CN104460346B (en) | Feeder automation action logic test method based on power distribution terminal service verification | |
| CN110138092B (en) | Substation sequence control system and method with master station safety check regulation and control function | |
| CN103441572B (en) | Substation equipment method for supervising | |
| CN102819249B (en) | Linkage control system and control method for power tunnel | |
| CN101951032B (en) | Method of realizing dynamic error-prevention function of transformer substation by monitoring and controlling unit | |
| CN105634129A (en) | Sequence control method for intelligent substation | |
| CN104600849A (en) | Smart power grid master station and substation depth anti-misoperation system implementation method | |
| CN105262220B (en) | Substation's intelligence shutdown telecontrol information check method and system | |
| CN113364120B (en) | Method, device and equipment for checking control process of intelligent substation and storage medium | |
| CN110674282B (en) | Expert knowledge rule base-based one-key sequential control operation order intelligent simulation method | |
| CN110148930A (en) | The method of fault location and topology automatic identification in distribution network | |
| CN205231849U (en) | Intelligent substation fortune is holded together all | |
| CN104283215A (en) | Detection and test method and device of intelligent distributed power distribution terminal | |
| CN101917063A (en) | Method and system for automatically switching master station-centralized spare power source | |
| CN105388370A (en) | Automatic closed-loop testing method for connecting-and-locking logic of substation bay level | |
| CN106329720A (en) | Detecting and debugging method for reconstruction and extension project secondary system for intelligent substation | |
| CN106505532A (en) | A kind of intelligent distributed FA fault handling methods based on main website standby | |
| CN104505947B (en) | Transformer substation direct current power supply monitoring system and transformer substation direct current power supply monitoring method | |
| CN111864894A (en) | Remote uninterrupted power transmission calibration method suitable for line protection device | |
| CN110457146A (en) | The processing method and processing device of robot data | |
| CN113746205A (en) | One-button programmed remote operation method based on network-side collaborative safety error-proof check | |
| CN202475014U (en) | Regional electrical network integrated five-preventing system | |
| CN203368127U (en) | Spare power automatic switching control equipment for transformer substation network | |
| CN104578419B (en) | A kind of transformer substation communication power supply monitoring system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |