CN1801575A - Intelligent observing and controlling system - Google Patents
Intelligent observing and controlling system Download PDFInfo
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- CN1801575A CN1801575A CNA2005101103970A CN200510110397A CN1801575A CN 1801575 A CN1801575 A CN 1801575A CN A2005101103970 A CNA2005101103970 A CN A2005101103970A CN 200510110397 A CN200510110397 A CN 200510110397A CN 1801575 A CN1801575 A CN 1801575A
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/18—Systems supporting electrical power generation, transmission or distribution using switches, relays or circuit breakers, e.g. intelligent electronic devices [IED]
Abstract
The intelligent measure-control system between intelligent electronic device and communication device of 10KV distribution substation comprises: an information treatment unit with a CPU electric connected to a inner memory, an external memory, a CPLD, a quartz-oscillator, and a Watchdog as well as other said units; a first and second communication unit, a measure-control unit, a system maintenance unit, and opposite control software. Wherein, preparing circuits of said information unit, two communication units and maintenance unit on one primary circuit board while the measure-control unit on expander board connected with primary board by flat cable. This invention connects to existed IED to realize collection for measure-control information and remote send to control center for remote control operation.
Description
Technical field
The present invention relates to the 10KV power distribution station, particularly a kind of intelligent observing and controlling system that is used for the small distribution station monitoring of 10KV.
Background technology
Along with the develop rapidly of Chinese national economy, the supply of electric power demand is increasing, and peak load is increasing.In recent years, power supply department on the one hand, drops into huge fund and strengthens power grid construction for alleviating the contradiction of power shortage, and it is more and more huger and complicated that electrical network becomes; On the other hand,, improve the power supply unit utilance, improve power supply capacity by existing electrical network is optimized management.
Power distribution network is as the terminal network that connects the user in the electrical network, and its scale is tens times of trunk electrical network.Therefore, grasp the real-time monitor message of power distribution network, can improve the operation level of sub-district power distribution network on a large scale, reduce fault outage number of times, interruption duration and power failure scope, realize that non-fault zone restores electricity, improve power supply reliability, guarantee to produce, live power supply.
10kV power distribution station (mainly the referring to switchyard) capital investment of building at present, disposed automation equipment (native system is called intelligent electronic device) such as relaying protection hereinafter to be referred as IED, main operational outfit has possessed local observation and control ability.But the communication port situation of existing 10kV power distribution station is relatively poor: do not have special communication channel, as network, special line etc., it is not too economical again to lay communication line again.
Existing method to power distribution station monitoring in real time is to use traditional terminal unit unit (Remote Terminal Unit) of similar transformer station monitoring in real time hereinafter to be referred as the RTU acquisition method, adopts the method to have following problem:
● the acquisition capacity of RTU is stronger, and is more suitable to the transformer station that the Information Monitoring amount is bigger, and obviously a bit waste investment concerning the less power distribution station of Information Monitoring amount;
● RTU supports stronger real time information transmission, needs communication condition preferably simultaneously, and as network or special line, for the small distribution station of One's name is legion, these conditions do not possess;
● the collection of RTU information and observing and controlling function and IED equipment have repeated, and this can increase unnecessary investment, equipment, wiring and contact, and may cause the inconsistency of information gathering and control.
● RTU is based on single-chip microcomputer work basically, and it is not enough that integrated information disposal abilities such as its communication process, stipulations processing, COMPREHENSIVE CALCULATING seem again.
The other method of existing power distribution network monitoring is to realize the monitoring of power distribution station by industrial computer.Industrial computer is a kind of than common apparatus, have stronger disposal ability and numerous expanded function plug-in cards, insert corresponding communication, observing and controlling plug-in card by expansion slot at it, can satisfy above-mentioned requirements on the function, but industrial computer is normally based on Intel x86 (CISC) hardware platform and the work of Windows software platform, and the reliability of automated system and power distribution station environment make this system lack reliability.
Along with the continuous development of electrical network, the construction of 10kV power distribution station constantly enlarges.10kV power distribution station (mainly the referring to K type power distribution station) basic configuration of building has automation equipments such as Microcomputer Protection at present; make full use of existing Microcomputer Protection in information gathering output advantage and the maturation of power cable screen carrier communication; seek a kind of advanced technology, efficient, flexible and economical and practical mode; with the information gathering that realizes the 10kV power distribution station and transfer to control centre; and carry out straighforward operation in control centre; thereby change the present situation of present power distribution station information blind area, more be necessary to implement 10kV power distribution station Automatic monitoring systems.
Summary of the invention
The technical problem to be solved in the present invention is to solve the above-mentioned technical barrier that exists in the existing 10KV power distribution network, a kind of IED of power distribution station monitoring and intelligent observing and controlling system between the communication equipment of being used for is provided, and the information of this system's power distribution station is gathered in real time and according to the information that collects power distribution station is carried out remote real-time monitoring.
The technical scheme of intelligent observing and controlling system of the present invention is:
A kind of IED103 and intelligent observing and controlling system between the communicator 101 that is used for the monitoring of 10KV power distribution station is characterised in that its formation comprises: information process unit 1, communication unit, measurement and control unit 3 and system maintenance unit 2 and control corresponding software thereof:
Described information process unit 1 comprises CPU11, internal memory 12, external memory 13, CPLD14, crystal oscillator 16 and Watchdog15, described CPU11 is electrically connected with internal memory 12, external memory 13, CPLD14, crystal oscillator 16 and Watchdog15 respectively, this CPU11 and described communication unit, measurement and control unit 3 and system maintenance unit 2 are electrically connected simultaneously, and described CPLD14 also is electrically connected with described communication unit, measurement and control unit 3 and system maintenance unit 2;
Described communication unit comprises first communication unit 4 and second communication unit 5, described first communication unit 4 adopts communication interface IED103 direct and power distribution station to be electrically connected, realize the communication between such IED103 and the CPU11, described second communication unit 5 is connected with higher level's power distribution station or transformer station by existing power cable or special line cable;
Described measurement and control unit 3 constitutes by isolating digital input circuit module 31, isolated DC analog input circuit module 32, isolation interchange analog input circuit module 33 and relay output circuit module 34;
Described system maintenance unit 2 is connected with notebook computer by DB9 cable or RJ45 cable on the one hand, is electrically connected and it is monitored with described information process unit 1, first communication unit 4, second communication unit 5 and measurement and control unit 3 on the other hand;
The circuit production of described information process unit 1, first communication unit 4, second communication unit 5 and system maintenance unit 2 is on same main circuit board, this circuit board is lost money instead of making money on the base plate of a cabinet by high thermal conductivity flexible cooling pad, measurement and control unit 3 is produced on the expander board, and this expander board is connected with main circuit board by flat cable.
The communication interface of this intelligent observing and controlling system 101 is the RS232 interface, or RS422 interface or RS485 interface.
Comprise serial communication indicator light 611, Ethernet indicator light 612, power supply indicator 613, operating state lamp 614, this locality/Long-distance Control selector switch 615, serial ports maintenance interface 616 and reset button 617 on the front panel of described cabinet; Comprise digital input interface 621 on the rear board, exchange analog input interface 622, relay output interface 623, DC simulation input interface 624, power input terminal 625, serial line interface 626, Ethernet maintenance interface 627, Ethernet interface 628 and earthing screw 629.
Described isolation digital input circuit module 31 is made of the first surge protection circuit 312, polarity switching 313, first optical isolation 314 and the single-chip microcomputer 315 that connect successively, the output termination CPU11 of this single-chip microcomputer 315, the input of the described first surge protection circuit 312 is connected on described digital input interface 621.
Described isolated DC analog input circuit module 32 is made of the second surge protection circuit 321 that connects successively, current/voltage commutation circuit 322, electric current isolated amplifier 323 and voltage isolation amplifier 324, optical isolation 325, variable connector 326, active filter 327 and an A/D converter 328 in parallel, DC simulation input interface 624 on the described cabinet of input termination of the described second surge protection circuit 321, the output of a described A/D converter 328 links to each other with described CPU11.
After described interchange analog input module 33 is connected by the output of parallel phase-correcting circuit network 3311 and I/V switching network 3312, second A/D converter 332 that connects successively, CPLD logic interfacing circuit 333 constitute again, and the input of this circuit is that interchange analog input interface 622, the output of rear board on the described cabinet links to each other with CPU11.
Described relay output circuit module 34 exports 343 by the anti-school of the selection Control Network 341 that connects successively, D0 controller 342 and dry contact, the input termination CPU11 of this relay output circuit module 34, and output connects described relay output interface 623.
Described CPU11 adopt based on the RISC framework, fundamental frequency is the POWERPC class chip of 200Hz to 350MHz.
Described Control Software mainly comprises:
Intelligent observing and controlling system primary control program 71 starts operation automatically after intelligent observing and controlling system 101 powers on, finish observing and controlling function, communication function and the maintenance function of system;
Serial ports supervisory programme 73 and serial ports maintenance program 72 are to start operation by the terminal window that is connected on the notebook computer on the described serial ports maintenance interface 616, they all operate on the intelligent observing and controlling system 101, and wherein serial ports supervisory programme 73 is set up to communicate by letter with primary control program 71 by inner TCP/IP and finished the system monitoring function;
Intelligent observing and controlling system maintenance program 91 operates on the notebook computer, sets up to communicate by letter with primary control program 71 by TCP/IP and finishes system monitoring and maintenance function.
Technique effect of the present invention is:
1. intelligent observing and controlling system of the present invention is connected with existing IED in power distribution station, make full use of advantage and the ripe communication technology of existing IED in information gathering and output control, realized the observing and controlling information gathering of power distribution station and remote transmission to control centre, and carried out straighforward operation in control centre.
2. the present invention has made full use of original communicator and power cable carrier equipment and dedicated line modem equipment, avoided laying again power cable, thereby a large amount of power cables and measuring and controlling equipment have been saved, reduced the construction working amount, significantly increased transmissible data bulk and guaranteed the uniqueness of data acquisition.System adopts that DC power supply has reduced system failure probability as working power in the high station of reliability, has strengthened the stability of accuracy, integrality and the transmission of system information.
3. the present invention adopts advanced microprocessor technology, and adopts circuit board is lost money instead of making money technology on described chassis backplane by high thermal conductivity flexible cooling pad.Can be under adverse circumstances such as high temperature, strong electromagnetic reliable and stable operation.
4. first communication unit of the present invention, second communication unit and measurement and control unit make observation and control ability that the present invention possessed three distant (remote signalling, remote measurement, remote controls) and carry out preposition communication and the informix disposal ability with power distribution station intelligent electric equipment; Simultaneously carry out real-time data communication with the kinds of protect communication protocol.
Description of drawings
Fig. 1 is the present invention's connection diagram in the 10kv power distribution station;
Fig. 2 is a circuit structure block diagram of the present invention;
Fig. 3 is the function refinement block diagram of first communication unit of the present invention;
Fig. 4 is the block diagram of measurement and control unit digital quantity input of the present invention;
Fig. 5 is the block diagram of measurement and control unit DC analogue quantity input of the present invention;
Fig. 6 is the block diagram of measurement and control unit ac analog input of the present invention;
Fig. 7 is the block diagram of the measurement and control unit relay output of the present invention's system;
Fig. 8 is a case front panel schematic diagram of the present invention;
Fig. 9 is a cabinet rear board schematic diagram of the present invention;
Figure 10 is that software function of the present invention is divided module diagram;
Figure 11 is a primary control program schematic flow sheet of the present invention.
Embodiment
In 10kV power distribution station supervisory control system, be applied as example with intelligent observing and controlling system of the present invention below, describe the present invention.
10kV power distribution station supervisory control system as shown in Figure 1 mainly is made up of IED103 (comprising wall protection measurement and control unit 1031, DC power system 1032 and thermostat 1033), intelligent observing and controlling system 101 and communicator 102 (comprising power cable carrier equipment 1021 and dedicated line modem equipment 1022), and intelligent observing and controlling system 101 of the present invention is the intelligence systems that are used between IED103 and the communicator 102.In 10kV power distribution station supervisory control system, intelligent observing and controlling system of the present invention 101 is on the one hand by being connected with IED103 in the station, finishes data acquisition and to the controlled function of IED103; Complex automatic system is communicated by letter in RTU by communicator 102 and higher level transformer station 104 or the station, and complex automatic system is communicated by letter with subdispatch SCADA system 105 and finished data upload and reception information is carried out control operation to described power distribution station IED103 in the RTU of higher level transformer station 104 or the station.Below to the detailed description of intelligent observing and controlling system 101 of the present invention.
See also Fig. 2, Fig. 2 is a circuit structure block diagram of the present invention, as seen from the figure, intelligent observing and controlling system 101 of the present invention is made up of 5 parts, be respectively: information process unit 1, first communication unit 4, second communication unit 5, measurement and control unit 3 and system maintenance unit 2, described five unit all are placed in the cabinet (not shown).
The cabinet of this intelligent observing and controlling system adopts 19 o'clock 4U cabinets of standard, the inner modularization plug-in card design of adopting main circuit board to add expander board, its front-panel structure as shown in Figure 8, its rear panel structure is as shown in Figure 9.Comprise serial communication indicator light 611, Ethernet indicator light 612, power supply indicator 613, operating state lamp 614, this locality/Long-distance Control selector switch 615, serial ports maintenance interface 616 and reset button 617 on this front panel; Comprise digital input interface 621 on this rear board, exchange analog input interface 622, relay output interface 623, DC simulation input interface 624, power input terminal 625, serial line interface 626, Ethernet maintenance interface 627, Ethernet interface 628 and earthing screw 629.
No fan, no hard disk, hermetically sealed are not established the hardware expanding slot in the whole intelligent observing and controlling system.CPU (Central Produce Unit) is lost money instead of making money on chassis backplane by high thermal conductivity flexible cooling pad hereinafter to be referred as the circuit board at CPU11 place, but not only natural heat dissipation but also can be effectively dustproof has guaranteed the reliability and the running environment requirement of equipment.
Described information process unit 1 among Fig. 2 comprises CPU11, internal memory 12, external memory 13, (programmable logic cells) is hereinafter to be referred as CPLD14, crystal oscillator 16 and house dog are hereinafter to be referred as Watchdog15, described CPU11 respectively with internal memory (12), external memory (13), CPLD (14), crystal oscillator (16) and Watchdog (15) are electrically connected, this CPU (11) and described communication unit simultaneously, measurement and control unit (3) and system maintenance unit (2) are electrically connected, described CPLD (14) also with described communication unit, measurement and control unit (3) and system maintenance unit (2) are electrically connected; Wherein CPU11 adopts the low-power consumption of motorola inc's production, the PowerPC family chip of employing RISC technology, external memory 13 adopts Compact flash, hereinafter to be referred as the CF card, it is the clock of 200MHz that crystal oscillator 16 produces the CPU11 needed frequency of working, and Watchdog15 inspects the execution of software by timing function.
Measurement and control unit 3 among Fig. 2 is according to the feature of received signal, and it comprises four parts: 16 tunnel isolation digital input circuit module 31; 8 tunnel isolated DC analog input circuit module 32; 18 tunnel isolation exchanges analog input circuit module 33; 8 tunnel relay output circuit module 34.
See also the function block diagram of isolation digital input circuit module 31 shown in Figure 4, described isolation digital input circuit module 31 is made of the first surge protection circuit 312, polarity switching 313, first optical isolation 314 and the single-chip microcomputer 315 that connect successively, the output termination CPU11 of this single-chip microcomputer 315, the input of the described first surge protection circuit 312 is connected on described digital input interface 621.Typical digital data collection comprises: the accident resultant signal; direct current fault-signal (comprising ac voltage losing); each position in storehouse continues and protects resultant signal (in each Microcomputer Protection equipment fault set of signals is a resultant signal) and typical switching value; it comprises inlet wire 1,2 switches; block switch; 1, No. 2 stations become switch, and outlet 1 is to outlet 10 switches.The input characteristics of the switching value of input is that input is counted: the 16 tunnel; Input form: DC (direct current) 110V or the active input of DC (direct current) 24V; Resolution: 1ms in standing supports snowslide to change; Digital filtering: software is adjusted, step-length 1ms, maximum 65535ms; 20% nominal value is continuous, and 140% nominal value can continue 2 seconds.
See also the function block diagram of isolated DC analog input circuit module 32 shown in Figure 5, described isolated DC analog input circuit module 32 is by the second surge protection circuit 321 that connects successively, current/voltage commutation circuit 322, electric current isolated amplifier 323 and voltage isolation amplifier 324 in parallel, optical isolation 325, variable connector 326, an active filter 327 and an A/D converter 328 constitute, DC simulation input interface 624 on the described cabinet of input termination of the described second surge protection circuit 321, the output of a described A/D converter 328 links to each other with described CPU11.The input characteristics of DC analogue quantity (AI) is input way: 8 tunnel; Input range: DC (direct current)-5V～DC (direct current)+5V, or 0～20mA; Resolution: 16 A/D conversion of tape symbol position, 62.5 ohm of current impedances, voltage input impedance＞10K; Sampling rate: 16 times/second; Precision:＜0.5%.
See also the function block diagram that isolation shown in Figure 6 exchanges analog input circuit module 33, after described interchange analog input module 33 is connected by the output of parallel phase-correcting circuit network 3311 and I/V switching network 3312, second A/D converter 332 that connects successively, CPLD logic interfacing circuit 333 constitute again, the input of this circuit is that interchange analog input interface 622, the output of rear board on the described cabinet links to each other with CPU11, the input characteristics of ac analog is, the analog quantity input: 18 ac analog inputs, through transformer isolation; Sampling rate: ripple is 64 times weekly; A/D resolution: 12 positions of putting in marks.When input signal is alternating voltage input (PT): the 9 tunnel; Nominal value: 120Vrms or 220Vrms; Range: 69.3V, 120V or 220V, 0% to 250% of nominal value; Overvoltage: 250% nominal value, continuously, 350% nominal value one minute; Load: less than 0.1VA; Accuracy: ± 0.2% full scale (under 25 ℃ situation).When input signal is alternating current input (CT): the 9 tunnel; Nominal value: 1A or 5Arms; Range: 2% to 1600% nominal value; Overcurrent: 4 times of nominal values--continuously, 30 times of nominal values--10 seconds, 100 times of nominal values--1 second; Load: 0.01ohm; Accuracy: ± 0.2% full scale (5 times of nominal values are following).
Fig. 7 is the block diagram representation of relay output relay output circuit module 34, described relay output circuit module 34 is by the anti-school of the selection Control Network 341 that connects successively, D0 controller 342 and dry contact output 343, the input termination CPU11 of this relay output circuit module 34, output connects described relay output interface 623.The relay output characteristic is output way: 8 tunnel; The way of output: the output of closing a floodgate; The outlet time: software set, step-length are 10ms, and the longest is 2.54s; The discharge state of Watchdog15 supervisory relay output circuit module 34 guarantees that control is not overtime; Contact capacity: 250V/8A; Hardware corridor is selected, and hardware is returned to school.
Also comprised system maintenance unit 2 among Fig. 2, it comprise serial ports safeguard 21 and Ethernet safeguard 22 two parts, serial ports safeguards that 21 can be connected with notebook computer by the serial ports maintenance interface 616 of front panel, and Ethernet safeguards that 22 can be connected with notebook computer by the Ethernet maintenance interface 627 of rear board.System maintenance comprises the function of system parameters configuration, communication monitoring, protocol analysis, data acquisition demonstration, simulated operation.
1 CPU11 and CPLD14 are electrically connected with measurement and control unit 3, system maintenance unit 2, first communication unit 4 and second communication unit 5 respectively in the information process unit shown in Figure 2.
The module diagram that Figure 10 divides by function for the systems soft ware 100 of intelligent observing and controlling system 101, the systems soft ware 100 of this system is made up of application program 7 and operating system 8 two parts, and application program 7 comprises primary control program 71, serial ports maintenance program 72, serial ports supervisory programme 73 in this systems soft ware 100; I/O interface drive program module 85, run indicator Local/Remote toggle switch driver module 86 and the api interface program module 81 of its Watchdog driver module 82 that provides, LAN (local area network (LAN)) driver module 83, serial port drive program module 84 and customization is provided operating system 8.Intelligent observing and controlling system 101 adopts embedded real-time operating system Linux, and this operating system 101 also is provided at the environment of setting up target machine and host cross compile and debugging on the PC.
Intelligent observing and controlling system primary control program (71) starts operation automatically after intelligent observing and controlling system (101) powers on, finish observing and controlling function, communication function and the maintenance function of system;
Serial ports supervisory programme (73) and serial ports maintenance program (72) are to start operation by the terminal window that is connected on the notebook computer on the described serial ports maintenance interface (616), they all operate on the intelligent observing and controlling system (101), and wherein serial ports supervisory programme (73) is set up to communicate by letter with primary control program (71) by inner TCP/IP and finished the system monitoring function;
Intelligent observing and controlling system maintenance program (91) operates on the notebook computer, sets up to communicate by letter with primary control program (71) by TCP/IP and finishes system monitoring and maintenance function.
Primary control program 71 is core applications of whole intelligent observing and controlling system, as shown in figure 11, is the schematic flow sheet of primary control program 71.After intelligent observing and controlling system 101 powered on, the operating process of primary control program 71 was as follows:
(1) in step 700, the information process unit 1 in the intelligent observing and controlling system 101 of the present invention, measurement and control unit 3, system maintenance unit 2, first communication unit 4 and second communication unit 5 are carried out making just according to first the making information that deposits in advance in the electric board;
Step 714 is an initial actuating, starts primary control program 71; In step 715, the path of CPU11 reading and saving current database in external memory from the configuration file of the fersvr.ini by name of external memory 13; In step 716, CPU11 sets up the information list of real-time Simulation amount, quantity of state and remote control amount in internal memory according to the configuration information in the current database in the external memory 13; In step 717, CPU11 sets up the TCP/IP service thread according to the tcp/ip communication agreement in internal memory 12; In step 718, CPU11 reads the configuration file about passage of Chl_info by name in the external memory 13, be that serial ports (acquisition channel) in first communication unit 4 is set up serial ports passage thread one by one in internal memory 12, for the serial ports in the second communication unit 5 (forwarding passage) is set up serial ports passage thread, and hang up thread; In step 719, CPU11 reads the configuration file about IED103 of Mcu_info by name in the external memory 13, one by one each IED103 is matched corresponding serial ports passage in internal memory; In step 7110, CPU11 starts all serial ports passage threads and measurement and control unit submodule 7112 threads, finishes initial work;
(2) in step 7001, the main thread of CPU11 operation primary control program 71;
In step 71111, CPU11 starts main thread; In step 71112, the operating state lamp 614 on the CPU11 control front panel is once bright every 1 second; In step 71113, the data of CPU11 to reading in from the serial ports passage according to configuration file, are calculated the amount of information that a synthetic part can not directly be gathered by formula; In step 71114, when incident takes place or CPU11 regularly real-time calculated value is deposited in the external memory 13, and then be back to step 71112.
(3) in step 7112, CPU11 operation TCP/IP service thread;
In step 71121, the TCP/IP service thread that setting up procedure 717 is set up; In step 71122, CPU11 receives client, the i.e. connection request of notebook computer maintenance program 91 of Lian Jieing or serial ports supervisory programme 73 by the TCP/IP passage; In step 71123, CPU11 receives the request message of client by the TCP/IP passage; In step 71124, CPU11 communication protocol analysis and the message that receives of processing according to the rules generates the message that needs and returns to client; In step 71125, whether the detection client asks to disconnect connects, and if yes, then in step 71126, disconnects connection in step 71125, if in step 71125 deny, then is back to step 71123.
(4) in step 7113, CPU11 operation measurement and control unit submodule thread;
In step 71131, CPU11 starts measurement and control unit submodule thread; In step 71132, CPU11 detects whether receive remote information; If yes, then CPU11 sends straighforward operation by relay output circuit module 34 in step 71132, if in step 71132 deny, then goes to step 71134; In step 71134, the isolation digital input circuit module 31 of CPU from measurement and control unit 3 circuit reads sequential affair record (Sequence of Events) hereinafter to be referred as SOE, and the information that reads is handled; In step 71135, CPU reading state amount and handling from isolate digital input circuit module 31; In step 71136, CPU exchanges from isolated DC analog input circuit module 32, isolation and reads analog quantity and processing the analog input circuit module 33.
(5) in step 7114, the communication module thread of CPU operation acquisition channel;
In step 71141, CPU11 starts a communication module thread as acquisition channel; In step 71142, certain IED103 on this acquisition channel of CPU11 poll sends request message to this IED103; In step 71143, CPU11 waits for the response message that receives from this IED103; In step 71144, CPU11 handles its response message that receives, or this acquisition channel is set is receive time-out; Be back to step 71142.
(6) in step 7115, the communication module thread of passage is transmitted in the CPU operation;
In step 71151, CPU11 starts one as the communication module thread of transmitting passage; In step 71152, CPU11 receives the request message at higher level station by this communication module; In step 71153, CPU11 handles the request message that receives, and returns response message and give this communication module, and is back to 71152.
Step 7001, step 7002, step 7003, step 7004 and step 7005 be concurrent running each other.
Primary control program is by 101 stipulations, 103 stipulations, DNP stipulations, ModBus stipulations, CDT stipulations and SPA stipulations, communicate by letter with IED103, to the IED103 request msg, according to corresponding real-time Simulation amount and quantity of state information in the configuration information update internal memory, SOE event and state quantitative change incident is given record; According to the control request of higher level station or maintenance program, send the control message to IED103; According to configuration, every kind of stipulations use one or more serial ports to communicate, and each serial communication modular is independently moving in the sub-thread.
Primary control program 71 by 101, CDT stipulations and existing distant place transformer substation communication, primary control program module 71 reads analog quantity and the quantity of state data that need transmission from the real time information scale, perhaps stand and transmit the SOE event and state quantitative change incident that is recorded of coupling, finish data upload with the higher level; Stand after the control request when receiving the higher level, find the corresponding communication unit to carry out control operation; Receive higher level station to the time message after, the native system time is proofreaied and correct; The communicator module of each serial ports is moved in independent sub-thread.
Primary control program is finished the analog quantity, digital data acquisition, the SOE logout that carry by the system call of measurement and control unit 3, and the flicker of control run indicator, reads Local/Remote toggle switch state; This I/O module is moved in single sub-thread, communication mechanism and intelligent cell communication module machine-processed similar.
Primary control program 71 by with operate in notebook computer on intelligent observing and controlling system maintenance program 91, serial ports supervisory programme (73) 73 communicate by letter, realize the following dress of configuration information and upload, the message of the real time monitoring of analog quantity and quantity of state, serial communication monitors, each communication unit and the supervision of channel status, the execution of control command and the renewal of primary control program.Communication adopts reliable TCP/IP to connect, and primary control program is as the server end of ICP/IP protocol; This server module is moved in independent sub-thread, and communication process is similar to the described submodule of communicating by letter with a distant place by 101 stipulations of Figure 14.
Primary control program is regularly write Watchdog, and the assurance system normally moves.
The user is connected notebook computer the serial ports maintenance interface 616 of front panel by cable, by client terminals program (existing hyper terminal in the Windows operating system), operation serial ports supervisory programme 73 is realized operation monitoring and operating function to intelligent observing and controlling system of the present invention.
Serial ports supervisory programme 73 uses ICP/IP protocol to communicate by letter with primary control program.Supervision and operating function comprise: path monitoring; Communication unit monitors; Each unit information amount monitors; System's global information amount monitors; Communication message monitors; The analog telecommand operation.
Notebook computer is connected to the serial ports maintenance interface 616 of front panel, by client terminals program (existing hyper terminal in the Windows operating system), operation serial ports maintenance program 72, realization is passed to configuration database the intelligent observing and controlling system under notebook computer, also can upgrade primary control program by serial ports maintenance program 72.ZModem agreement with standard realizes that the file of serial mode transmits.
Intelligent observing and controlling system maintenance program 91 operates on the notebook computer, and the maintenance that serial ports maintenance interface 616 by front panel and the Ethernet maintenance interface of rear board 627 are realized intelligent observing and controlling system is safeguarded to comprise various information configuration, monitor and diagnose.
The intelligent observing and controlling system maintenance program operates on the windows platform, and major function is as follows:
I, engineering configuration: parameter configuration; Channel arrangement; The communication unit configuration; Analog quantity, quantity of state, the configuration of remote control amount; Calculate the formula definition of analog quantity, quantity of state; Transmit distant place analog quantity, quantity of state, the configuration of remote control amount
II, mistake Ethernet mode monitor and operate: path monitoring;
III, communication unit monitor;
IV, each unit information amount monitor;
V, system's global information amount monitor;
VI, communication message monitor;
VII, analog telecommand operation;
VIII, adorn and upload configuration database down;
IX, renewal primary control program.
III, monitor and operation by serial mode: inner integrated easy client terminals program makes things convenient for the use of serial mode; By serial mode operation serial ports supervisory programme; By serial mode operation serial ports maintenance program.
Intelligent observing and controlling system 101 of the present invention by higher level transformer station 104 and control centre carry out to the time, in stand all the time to be marked with intelligent observing and controlling system 101 be benchmark.
The result is as follows after tested for intelligent observing and controlling system 101 of the present invention: system possesses following technical indicator, satisfies the requirement of power distribution station monitoring.
Data sampling cycle＜1 second in standing, systematic survey composition error≤1.5%.
Send remote signalling from power distribution station and be indexed to whole time≤30 second that this signal is received at the dispatching terminal station.
The remote control accuracy is not less than 99.9%.
The signal performance factor is not less than 99.9%.
Sequence of events recording accuracy 〉=95%.
System's availability factor 〉=99.9%.
May operate in the following environment:
。Height above sea level :≤1000 meters
。Maximum average relative humidity: 90% (25 ℃)
。High ambient temperature :+65 ℃
。Minimum ambient temperature :-25 ℃
。Daily temperature is maximum to be changed: 25 ℃
Electrical characteristic requires as follows:
。Specified alternating voltage: 380V, 220V
。Rated direct voltage: 220V, 110V
。Rated frequency: 50Hz
。Non-electric quantity transmitter input: 4～20mA or 0～5V
Operating temperature, humidity characteristic are as follows:
。Ambient temperature :-10 ℃～+ 55 ℃
。The maximum rate of change of temperature: 10 ℃/h
。Relative humidity: 5%～95%
。Maximum absolute humidity: 28g/m
3
Ambient temperature is in the time of-5 ℃～+ 40 ℃, and the device operate as normal satisfies normal precision.
Ambient temperature is in the time of-10 ℃～+ 55 ℃, and the device operate as normal satisfies allowing precision.
Under Lightning Over-voltage, primary circuit operation, primary equipment fault, secondary circuit operation and other strong jamming effect, intelligent observing and controlling system 101 no misoperation or damages of the present invention.
The requirement of III level in the respective specified such as IEC60255-22-1, IEC60255-22-2, IEC60255-22-3, IEC60255-22-4, IEC60255-22-5 is satisfied in the fast transient interference test of intelligent observing and controlling system 101 of the present invention, High-frequency Interference test, radiation field interference test, impulse voltage test, static test and Insulation Test etc.
Intelligent observing and controlling system 101 of the present invention adopts DC power supply (110V) power supply in the station in principle.When DC power supply voltage changes in 80%～115% rated value scope in the station, intelligent observing and controlling system reliably working, normal operation.Direct-current power supply ripple coefficient≤5% o'clock, the work of intelligent observing and controlling system normal reliable, precision satisfies normal requirement.When drawing, closing DC power supply and plug fuse generation repetition disruptive spark, intelligent observing and controlling system does not have misoperation.When various abnormal conditions (short circuit, broken string, one point earth etc.) appearred in DC power supply, intelligent observing and controlling system did not have misoperation.
The logical circuit of intelligent observing and controlling system 101 of the present invention should recover (comprising slow recovery) 80% o'clock to rated voltage in DC power supply by DC-DC inverter power supply independently, and intelligent observing and controlling system of the present invention can normal self-starting.
The operation voltage of the direct current relay that intelligent observing and controlling system of the present invention adopted should be between 50%～75% DC power supply voltage.
Claims (9)
1. one kind is used for the intelligent electronic device (103) of 10KV power distribution station monitoring and the intelligent observing and controlling system (101) between the communicator, is characterised in that its formation comprises: information process unit (1), communication unit, measurement and control unit (3) and system maintenance unit (2) and control corresponding software thereof:
Described information process unit (1) comprises CPU (11), internal memory (12), external memory (13), CPLD (14), crystal oscillator (16) and Watchdog (15), described CPU (11) is electrically connected with internal memory (12), external memory (13), CPLD (14), crystal oscillator (16) and Watchdog (15) respectively, this CPU (11) and described communication unit, measurement and control unit (3) and system maintenance unit (2) are electrically connected simultaneously, and described CPLD (14) also is electrically connected with described communication unit, measurement and control unit (3) and system maintenance unit (2);
Described communication unit comprises first communication unit (4) and second communication unit (5), described first communication unit (4) adopts communication interface intelligent electronic device (103) direct and power distribution station to be electrically connected, realize the communication between such intelligent electronic device (103) and the CPU (11), described second communication unit (5) is connected with higher level's power distribution station or transformer station by existing power cable or special line cable;
Described measurement and control unit (3) is by isolating digital input circuit module (31), isolated DC analog input circuit module (32), isolating interchange analog input circuit module (33) and relay output circuit module (34) formation;
Described system maintenance unit (2) is connected with notebook computer by DB9 cable or RJ45 cable on the one hand, is electrically connected and it is monitored with described information process unit (1), first communication unit (4), second communication unit (5) and measurement and control unit (3) on the other hand;
The circuit production of described information process unit (1), first communication unit (4), second communication unit (5) and system maintenance unit (2) is on same main circuit board, this circuit board is lost money instead of making money on the base plate of a cabinet by high thermal conductivity flexible cooling pad, measurement and control unit (3) is produced on the expander board, and this expander board is connected with main circuit board by flat cable.
2. intelligent observing and controlling system according to claim 1 (101), the communication interface that it is characterized in that this system is the RS232 interface, or RS422 interface or RS485 interface.
3. intelligent observing and controlling system according to claim 1 (101) is characterized in that comprising serial communication indicator light (611), Ethernet indicator light (612), power supply indicator (613), operating state lamp (614), this locality/Long-distance Control selector switch (615), serial ports maintenance interface (616) and reset button (617) on the front panel of described cabinet; Comprise digital input interface (621) on the rear board, exchange analog input interface (622), relay output interface (623), DC simulation input interface (624), power input terminal (625), serial line interface (626), Ethernet maintenance interface (627), Ethernet interface (628) and earthing screw (629).
4. intelligent observing and controlling system according to claim 1 (101), it is characterized in that described isolation digital input circuit module (31) is made of the first surge protection circuit (312) that connects successively, polarity switching (313), first optical isolation (314) and single-chip microcomputer (315), the output termination CPU (11) of this single-chip microcomputer (315), the input of the described first surge protection circuit (312) is connected on described digital input interface (621).
5. intelligent observing and controlling system according to claim 1 (101), it is characterized in that described isolated DC analog input circuit module (32) is by the second surge protection circuit (321) that connects successively, current/voltage commutation circuit (322), electric current isolated amplifier (323) and voltage isolation amplifier (324) in parallel, optical isolation (325), variable connector (326), an active filter (327) and an A/D converter (328) constitute, DC simulation input interface (624) on the described cabinet of input termination of the described second surge protection circuit (321), the output of a described A/D converter (328) links to each other with described CPU (11).
6. intelligent observing and controlling system according to claim 1 (101), after it is characterized in that described interchange analog input module (33) is connected by the output of parallel phase-correcting circuit network (3311) and I/V switching network (3312), second A/D converter (332) that connects successively, CPLD logic interfacing circuit (333) constitute again, and the input of this circuit is that interchange analog input interface (622), the output of rear board on the described cabinet links to each other with CPU (11).
7. intelligent observing and controlling system according to claim 1 (101), it is characterized in that described relay output circuit module (34) is by the anti-school of the selection Control Network (341) that connects successively, DO controller (342) and dry contact output (343), the input termination CPU (11) of this relay output circuit module (34), output connects described relay output interface (623).
, and intelligent observing and controlling system according to claim 1 (101), it is characterized in that described CPU (11) adopt based on the RISC framework, fundamental frequency is the POWERPC class chip of 200Hz to 350MHz.
9. intelligent observing and controlling system according to claim 1 (101) is characterized in that described Control Software mainly comprises:
Intelligent observing and controlling system primary control program (71) starts operation automatically after intelligent observing and controlling system (101) powers on, finish observing and controlling function, communication function and the maintenance function of system;
Serial ports supervisory programme (73) and serial ports maintenance program (72) are to start operation by the terminal window that is connected on the notebook computer on the described serial ports maintenance interface (616), they all operate on the intelligent observing and controlling system (101), and wherein serial ports supervisory programme (73) is set up to communicate by letter with primary control program (71) by inner TCP/IP and finished the system monitoring function;
Intelligent observing and controlling system maintenance program (91) operates on the notebook computer, sets up to communicate by letter with primary control program (71) by TCP/IP and finishes system monitoring and maintenance function.
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| CNB2005101103970A CN100350714C (en) | 2005-11-16 | 2005-11-16 | Intelligent observing and controlling system |
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