CN201556976U - Remote monitoring embedded control system of transformer substation - Google Patents
Remote monitoring embedded control system of transformer substation Download PDFInfo
- Publication number
- CN201556976U CN201556976U CN2009201959068U CN200920195906U CN201556976U CN 201556976 U CN201556976 U CN 201556976U CN 2009201959068 U CN2009201959068 U CN 2009201959068U CN 200920195906 U CN200920195906 U CN 200920195906U CN 201556976 U CN201556976 U CN 201556976U
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- transformer substation
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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
- 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
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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
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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
- 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
- Y04S10/16—Electric power substations
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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
- 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
Abstract
The utility model relates to a remote monitoring embedded control system of a transformer substation. The control system comprises a PLC control system that realizes the control operation on electrical and equipment protection of a field device. The embedded control system is characterized by being provided with a remote monitoring system of the transformer substation, wherein the remote monitoring system realizes the equipment microcomputer protection and electrical monitoring of the transformer substation; by sharing the process data of the PLC control system and the protection data of the remote monitoring system of the transformer substation on a server, the remote monitoring system of the transformer substation is embedded into the PLC control system, thus realizing the embedding of the remote monitoring system of the transformer substation as well as the seamless combination and logical interlocking between the PLC control system and the remote monitoring system. All the information of a microcomputer integrated protection device of the transformer substation can be transmitted to the remote monitoring system and stored in a historical database. The embedded control system greatly facilitates the call and analysis of historical running curves and report forms, and provides the most original data for the running analysis and accident analysis.
Description
Technical field
The utility model relates to plant area's power transmission and distribution intelligent monitor system of the large-scale or super-sized enterprises of industries such as automation control monitoring technique and the network communications technology, especially electric power, iron and steel, petrochemical industry, coal harbour.
Background technology
Along with high speed development of national economy, the large-capacity power number of users is also in rapid increase, the operation and the maintenance levels of the mesolow transformer power distribution system equipment that present these large-capacity users are provided with in this enterprise are very weak, personnel dispose too much, cause a plurality of supervisory control system personnel's repeated configuration, adopt artificial form on duty to manage mostly, and many-sided factor such as the attendant lacks practical experience and professional knowledge or lack a sense of responsibility in addition, cause the substation equipment fault easily, accident happens occasionally, and therefore is difficult to satisfy enterprise security, reliably, economic need for electricity.
On the other hand, the expense of manual maintenance enterprise transformer substation system operation is higher, for reducing cost, small business tends to employ some to hold the transformer station of the electrician management enterprise of many duties, large enterprise is along with the raising of enterprise automation level, after simplifying, personnel cause personnel shortage, actually like this cause consequence often: because enterprise is for controlling cost, under the situation that reduces personnel, the supervisory control system automaticity is low, be difficult to accomplish real-time monitoring, brought very big potential safety hazard and loss to the enterprises and individuals to system.
In addition, the fault of enterprise's controller switching equipment and personnel's misoperation fault also brings threat to the safe operation of electrical network and the safety in production operation of enterprise self.
Present enterprise equipment for power transmission and distribution exists as in shortcoming:
1) equipment disperse, can't centralized monitor, in case equipment fault takes place, the fault inquiry difficulty is big.
2) existing power transmission and distribution Design of Monitoring and Control System is aging, and the equipment acquired signal is few, can't satisfy modern monitoring requirement.
3) existing power transmission and distribution supervisory control system and control system are independent fully, and linkage is poor, operating personnel's repeated configuration.
Summary of the invention
Technical problem to be solved in the utility model is: be to overcome the deficiency of above-mentioned prior art, design and a kind ofly can carry out real-time unified monitoring management and reliably realize unattended a kind of centralized control center data monitoring system effectively transformer station of enterprise again in conjunction with the production run process monitoring time.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of transformer substation remote monitoring embeds control system; comprise the PLC control system; the PLC control system realizes the electric of field apparatus and equipment protection control operation; it is characterized in that: it is provided with transformer substation remote monitoring system; transformer substation remote monitoring system is realized substation equipment Microcomputer Protection and electric monitoring; by the process data of PLC control system and protected data the sharing on server of transformer substation remote monitoring system; transformer substation remote monitoring system is embedded in the PLC control system, realizes that transformer substation remote monitoring system embeds and PLC control system seamless combination; logical interlock.
Described transformer substation remote monitoring system comprises at least one SCADA master server; some HMI clients; some MODBUS gateway devices; GPS equipment; transformer station's computer integrated protection; the low-voltage power intelligence instrument; DC control system; UPS equipment and monitor; the SCADA master server by data wire respectively with described HMI client; monitor; the PLC control system; GPS equipment; transformer station's computer integrated protection communication connects; the PLC control system also links to each other with the transformer station computer integrated protection; the SCADA master server by the MODBUS gateway device respectively with described low-voltage power intelligence instrument; DC control system is connected with the UPS device talk; the SCADA master server is stored in process database with the equipment operation parameter of PLC control system collection in worksite; for some HMI client reading displayed; the HMI client is by monitoring and the operation of SCADA master server realization to the PLC control system; GPS equipment provides gps data to main clothes device; main clothes device receives and handles gps data; extraction time data, to corresponding serial ports client-server transmitting time synch command.
Described transformer station computer integrated protection comprises fuser motor cabinet, motor comprehensive protection device, transformer comprehensive protector and feeder line comprehensive protector; fuser motor cabinet, motor comprehensive protection device, transformer comprehensive protector and feeder line comprehensive protector are connected with the communication of SCADA master server respectively, and the running state parameter of substation equipment is transferred to the SCADA master server.
Described GPS equipment comprise GPS time service antenna, GPS to the time device, GPS to the time device connect GPS time service antenna, its corresponding serial ports output connects SCADA master server.
The utility model is the following beneficial effect of tool compared with prior art:
1) the automation remote supervisory control system of present domestic transformer station, the communication need high large-scale substation use that be confined on electrical network main grid structure big because of its investment, general mesolow customer substation also can't be realized the automation remote monitoring because of fund and technical reason, the utility model has been filled up this blank, can concentrate specialized remote monitoring operation to each distribution system implementation by this technology platform power consumer, specialization moves and technical foundation has been established in maintenance for enterprise carries out.
2) the utility model adopts and independently to set up one at plant area (transformer station of plant area) end and overlap automated management system and communicate to connect by network and centralized control center, by centralized control center's unification transformer station of plant area is monitored in real time, guarantee transformer station's unattended operation ground safe operation, and have all functions such as remote measurement, remote signalling, remote control, remote regulating, management, become fully independently Automatic monitoring systems, for the normal operation of substation equipment and the timely processing of fault provide reliable guarantee, for enterprise avoids unnecessary loss.
3) for large enterprise, even if build transformer substation remote monitoring system is arranged, also be to be independent of plant area's control system, be equipped with operating personnel specially.The utility model according to production equipment control technology, can finish the loaded down with trivial details operation that need operate respectively originally transformer substation remote monitoring system and automation control system networking now on two cover systems at any HMI client operation station.The all operations record all is recorded in historical data base and files, and to plant area's substation equipment implementation remote monitoring in 24 hours, both guaranteed that electric substation's electric equipment operation in optimum state, optimized the operating personnel again, greatly reduced the maintenance and the human cost of enterprise.
4) the utility model all can be transferred to long distance control system with all information of transformer station's computer integrated protection, and deposits historical data base in.Great convenience is called, is analyzed history run curve, form.Provide the most original data to operating analysis, accident analysis.
5) GPS equipment: comprise GPS time service antenna, GPS to the time device.Correct effectively satellite time can be provided, to the equipment that is monitored terminal carry out to the time make the equipment operation clock correctly reliable.Can in the very first time, reach the spot by GPS and generalized information system when abnormal conditions or breakdown repair occurring in the substation operation process simultaneously, reduce the loss that brings because of the not yet done time delays of road.
Description of drawings
Fig. 1 is a systematic schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Referring to Fig. 1; a kind of transformer substation remote monitoring embeds control system; it comprises: PLC control system and transformer substation remote monitoring system; the PLC control system realizes the electric of field apparatus and equipment protection control operation; transformer substation remote monitoring system is realized substation equipment Microcomputer Protection and electric monitoring; by the process data of PLC control system and protected data the sharing on server of transformer substation remote monitoring system; transformer substation remote monitoring system is embedded in the PLC control system, realizes that transformer substation remote monitoring system embeds and PLC control system seamless combination; logical interlock.
Transformer substation remote monitoring system comprises at least one SCADA master server; some HMI clients; some MODBUS gateway devices; GPS equipment; transformer station's computer integrated protection; the low-voltage power intelligence instrument; DC control system; UPS equipment and monitor; the SCADA master server by data wire respectively with the HMI client; monitor; the PLC control system; GPS equipment; transformer station's computer integrated protection communication connects; the communication that also links to each other of PLC control system with the transformer station computer integrated protection; the SCADA master server by the MODBUS gateway device respectively with the low-voltage power intelligence instrument; DC control system is connected with the UPS device talk; the SCADA master server is stored in process database with the equipment operation parameter of PLC control system collection in worksite; for some HMI client reading displayed; the HMI client is by monitoring and the operation of SCADA master server realization to the PLC control system; GPS equipment provides gps data to main clothes device; main clothes device receives and handles gps data; extraction time is to corresponding serial ports client-server transmitting time synch command.Transformer station's computer integrated protection comprises fuser motor cabinet, motor comprehensive protection device, transformer comprehensive protector and feeder line comprehensive protector; fuser motor cabinet, motor comprehensive protection device, transformer comprehensive protector and feeder line comprehensive protector are connected with the communication of SCADA master server respectively, and the running state parameter of substation equipment is transferred to the SCADA master server.Transformer station's computer integrated protection has at functions such as the zero-sequence current protection of the protection of the two-period form three-phase current of phase-to phase fault, overload alarm and trip avoidance function, single-phase earthing, o-volt protection, non electrical quantity protections; and the record killer switch about the operation; transformer station's computer integrated protection is by being connected with the SCADA master server; with service data and the chain SCADA master server that is transferred to of protection action, realize with the logic of PLC control chain.The low-voltage power intelligence instrument has functions such as measurements and calculations low tension switch three-phase current, three-phase voltage between phases/phase voltage, power factor, frequency, active power, reactive power, active energy and reactive energy, the low-voltage power intelligence instrument is connected with the SCADA master server, service data is transferred to the storage of SCADA master server, so that do operating analysis, accident analysis.DC control system provides the control power supply in electrical equipment control loop for whole substation breakers switch, the ruuning situation of the operating state direct relation transformer station of DC control system, DC control system is connected with the SCADA master server, and the operating state of DC control system is supplied the operation personnel control in real time.UPS equipment comprises UPS on-line monitoring main frame and backup battery, under system power supply dead electricity situation, for system provides uninterrupted power supply, guarantees that system works on.Monitor adopts large-screen monitor, and as DLP (digital light processing screen) large-size screen monitors, monitor provides the man-machine interface of monitoring transformer station and control system running status to operating personnel in real time.
SCADA (Supervisory Control and Data Acquisition data acquisition and monitoring system) master server adopts the fault-tolerant form server, guarantees equipment dependability to greatest extent.The SCADA server is based on HMI (the Human Machine Interface man-machine interface) backstage of process database, mainly is that the signals collecting that the scene of PLC control system is all arrives process database, reads for the graphic interface demonstration of HMI client.Give the PLC system to HMI operational order real-time Transmission simultaneously,, store process database into for the operation note of HMI for exporting output module to after the PLC logical operation.And the SCADA master server is by industrial TCP/IP and each transformer substation's computer integrated protection communication; by MODBUS gateway and low-voltage power intelligence instrument; UPS equipment; device talks such as DC control system; the device signal state that needs in the electric substation to monitor is all read; by HMI operational order real-time Transmission control substation facilities; the SCADA server also has equipment running status; the device location state; the query function of important parameters such as electric current comes the operating position of analytical equipment and coordination control to finish whole transportation by the log to these parameters.
The PLC control system: the PLC control system comprises digital quantity input/output module, analog quantity input/output module and PLC main frame.The PLC control system is by digital quantity input module and analog quantity input module, gather a few signals state of equipment such as belt conveyor, ship unloaders, ship loader, stacker-reclaimer, reclaimer, electric liquid threeway baffle plate, program control type tramp iron separator, belted electronic balance, circulating chain code calibration equipment, wet scrubber, hydraulic pressure belt stretcher equipment running status and electric substation's feedback switch, transformer, low tension switch, UPS, DC control system, important parameters such as device location state, electric current are analyzed and are coordinated to control and finish whole transportation by these parameters.
The equipment operation parameter that PLC system handle collects sends the SCADA server to, and confession SCADA server carries out storage and the processing to data.The HMI client can realize monitoring and operation to the PLC control system by the SCADA server: finish the work such as real-time management, Equipment Control, system operation, flow process picture and graphical display, monitoring of operation in the technological process of production.
GPS equipment comprise GPS time service antenna, GPS to the time device, GPS to the time device connect GPS time service antenna, its corresponding serial ports output connects the SCADA master server, when the GPS operate as normal by GPS time service antenna receiving satellite signal, GPS to the time device to the signal processing computing after, according to setting-up time all devices that is connected on the network is carried out clock synchronization.If device when breaking down, then has the SCADA master server as interim event server, all devices on the network is regularly carried out clock synchronization.
HMI (Human Machine Interface man-machine interface) client: operating personnel, can realize the harbour system equipment by click on HMI by graphical monitoring software by the HMI client: the startup of belt conveyor, ship unloaders, ship loader, stacker-reclaimer, reclaimer, electric liquid threeway baffle plate, program control type tramp iron separator, belted electronic balance, circulating chain code calibration equipment, wet scrubber, hydraulic pressure belt stretcher etc., stop control.Realization is to supervision, the inquiry of device history service data, analysis, the printing of equipment running status.System's All Alerts shows, the inquiry of alarm logging;
Dynamically show the operation situation of technological process, mainly show following content:
The process system overall picture shows
Each equipment power consumption statistics shows
The demonstration of all kinds of belt feeder protection checkout gears
Unloading capacity shows when unloading the heap operation
Get shipload demonstration when pretending industry
The fault alarm of all devices shows (fault that comprises power lightning protection shows)
Each belt feeder brake limit switch state shows
Needs according to technological operation are selected flow process, and after flow process is confirmed, by predicting flow path direction sequence starting flow sheet equipment, finish flow startup.After process flow operation was finished set amount, flow sheet equipment stopped flow sheet equipment in proper order by the feeding flow path direction.When flow process is normally moved, also can carry out flow process and switch, after starting new flow sheet equipment, stop the equipment of a last flow process automatically according to the operation needs.
Report to the police and handle: the processing of reporting to the police is divided into accident alarming and advance notice is reported to the police.The former comprises circuit breaker trip and protective device actuating signal that not operation causes.The latter comprises that general device displacement, abnormal state information, analog quantity or temperature amount are out-of-limit, the abnormal state of soft, the hardware of computer supervisory control system etc.System should be able to provide All Alerts and the record of reporting to the police and returning, and alarm logging is existed on the hard disk.Alarm logging is realized long preservation.
Accident alarming: during the accident condition mode, public accident alarming sends audible alarm immediately, represent this equipment displacement with color change and flicker on the HMI picture at operations staff human-machine operation person station, show the red alarm clause simultaneously, the warning clause can select random printing or calling to print; Accident alarming confirms that by manual or automated manner each affirmation is once reported to the police, and automatic acknowledging time is adjustable.Report to the police and in a single day confirm, sound, flash of light promptly stop, and the warning clause becomes yellow by redness.After alert if disappeared, warning clause color disappeared, and sound, flash of light stop, and warning message is preserved.
The computer integrated protection of motor has current quick, overcurrent protection, zero sequence ground protection, negative phase-sequence overcurrent protection, overtemperature protection, under-voltage protection, long protection start-up time, rotation-clogging protection.
Measuring amount: electric current I a, Ic
Amount of calculation: active power and reactive power
Switching value input: motor circuit breaker position and alarm condition
The output control of motor circuit breaker
The computer integrated protection of transformer has the protection of two-period form three-phase current, overload alarm and trip avoidance function, the zero-sequence current protection of single-phase earthing, o-volt protection, the non electrical quantity protection of reflection phase-to phase fault.
Measuring amount: transformer both sides electric current: Ia, Ib, Ic
Transformer temperature: possess warning, tripping operation is provided with function
Amount of calculation: transformer both sides active power, reactive power switching value input: state position such as transformer both sides circuit breaker position and alarm condition (comprising the protection warning message), transformer on-load voltage regulating loop signal, transformer body signal controlled variable: the output control of transformer both sides circuit breaker
During native system work; the transformer substation remote monitoring system computer integrated protection is transferred to the SCADA server on the one hand to the switching signal that inserts it; carry out self diagnosis on the other hand; and output alarm signal is given the SCADA server; simultaneously; control system subsystem PLC control system is by digital quantity input module and analog quantity input module; gather belt conveyor; ship unloaders; ship loader; stacker-reclaimer; reclaimer; electricity liquid threeway baffle plate; the program control type tramp iron separator; belted electronic balance; circulating chain code calibration equipment; wet scrubber; hydraulic pressure belt stretcher equipment running status and electric substation's feedback switch; transformer; low tension switch; UPS; the a few signals state of equipment such as direct current system; the device location state; important parameters such as electric current; analyze with the Mediation Device scene whether meet the startup service conditions by these parameters; judgment device is in the fault-free operational readiness; and judgement is transferred to the SCADA server; simultaneously; all send the SCADA data in server to and all are stored in historical data base; have only the SCADA server of working as to receive that from the supervisory control of substation subsystem equipment is electric normal; receive that from the PLC control system same device context protects normal situation; just allow the operator to pass through HMI client terminal start-up equipment, the HMI client can realize monitoring and operation to monitoring system of electric substation and PLC control system by the SCADA server: finish the real-time management of operation in the technological process of production; Equipment Control; system operation; flow process picture and graphical display; work such as monitoring.
During this new device system works, its GPS equipment provides gps data to master server, and gps data comprises related data information such as time, longitude and latitude, height.Master server receives and handles gps data, extraction time relevant information, to corresponding serial server transmitting time synch command, make whole system keep the time synchronized of higher progress.
Claims (4)
1. a transformer substation remote monitoring embeds control system; comprise the PLC control system; the PLC control system realizes the electric of field apparatus and equipment protection control operation; it is characterized in that: it is provided with transformer substation remote monitoring system; transformer substation remote monitoring system is realized substation equipment Microcomputer Protection and electric monitoring; by the process data of PLC control system and protected data the sharing on server of transformer substation remote monitoring system; transformer substation remote monitoring system is embedded in the PLC control system, realizes that transformer substation remote monitoring system embeds and PLC control system seamless combination; logical interlock.
2. a kind of transformer substation remote monitoring as claimed in claim 1 embeds control system; it is characterized in that: described transformer substation remote monitoring system comprises at least one SCADA master server; some HMI clients; some MODBUS gateway devices; GPS equipment; transformer station's computer integrated protection; the low-voltage power intelligence instrument; DC control system; UPS equipment and monitor; the SCADA master server by data wire respectively with described HMI client; monitor; the PLC control system; GPS equipment; transformer station's computer integrated protection communication connects; the PLC control system also links to each other with the transformer station computer integrated protection; the SCADA master server by the MODBUS gateway device respectively with described low-voltage power intelligence instrument; DC control system is connected with the UPS device talk; the SCADA master server is stored in process database with the equipment operation parameter of PLC control system collection in worksite; for some HMI client reading displayed; the HMI client is by monitoring and the operation of SCADA master server realization to the PLC control system; GPS equipment provides gps data to main clothes device; main clothes device receives and handles gps data; extraction time data, to corresponding serial ports client-server transmitting time synch command.
3. a kind of transformer substation remote monitoring as claimed in claim 2 embeds control system; it is characterized in that: described transformer station computer integrated protection comprises fuser motor cabinet, motor comprehensive protection device, transformer comprehensive protector and feeder line comprehensive protector; fuser motor cabinet, motor comprehensive protection device, transformer comprehensive protector and feeder line comprehensive protector are connected with the communication of SCADA master server respectively, and the running state parameter of substation equipment is transferred to the SCADA master server.
4. embed control system as claim 2 or 3 described a kind of transformer substation remote monitorings, it is characterized in that: described GPS equipment comprise GPS time service antenna, GPS to the time device, GPS to the time device connect GPS time service antenna, its corresponding serial ports output connects SCADA master server.
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| CN2009201959068U CN201556976U (en) | 2009-09-10 | 2009-09-10 | Remote monitoring embedded control system of transformer substation |
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| CN2009201959068U CN201556976U (en) | 2009-09-10 | 2009-09-10 | Remote monitoring embedded control system of transformer substation |
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| CN101957843A (en) * | 2010-09-17 | 2011-01-26 | 重庆市电力公司綦南供电局 | Substation standardization management touch inquiry system |
| CN102193555A (en) * | 2011-03-11 | 2011-09-21 | 凯里供电局 | Panoramic-state monitoring system for centralized control centers |
| CN102647331A (en) * | 2011-02-21 | 2012-08-22 | 施耐德电器工业公司 | Programmable logic controller with historical variable and data communication method of controller |
| CN102789223A (en) * | 2012-08-31 | 2012-11-21 | 河南省电力公司鹤壁供电公司 | Intelligent auxiliary real-time monitoring system of iSaSCADA transformer substation |
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| CN114301998A (en) * | 2021-11-08 | 2022-04-08 | 上海许继电气有限公司 | Transformer substation auxiliary equipment data acquisition system based on Modbus protocol |
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- 2009-09-10 CN CN2009201959068U patent/CN201556976U/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957843A (en) * | 2010-09-17 | 2011-01-26 | 重庆市电力公司綦南供电局 | Substation standardization management touch inquiry system |
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