CN1323481C - Microcomputer protection and electric power monitoring system - Google Patents
Microcomputer protection and electric power monitoring system Download PDFInfo
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- CN1323481C CN1323481C CNB2004100162498A CN200410016249A CN1323481C CN 1323481 C CN1323481 C CN 1323481C CN B2004100162498 A CNB2004100162498 A CN B2004100162498A CN 200410016249 A CN200410016249 A CN 200410016249A CN 1323481 C CN1323481 C CN 1323481C
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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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention relates to a microcomputer protection and power monitoring system which is suitable for the automatic operation, the protection, the control and the management of power stations, transformer/distribution stations, distribution networks and power allocating systems. A structure of an open type bus system is used, and the present invention comprises a controller and a protector which are mutually and independently arranged and are both provided with communication interfaces, wherein the controller is provided with a main controller and a server and is connected with a supervisory system. The protector comprises a plurality of microcomputer protection monitoring devices placed at a plurality of power systems, and the controller, the protector and the supervisory system transmit information through communication networks. The present invention has the advantages of simple structure and rapid and accurate message transmission, has the functions of automatic patrol and control, remote control, remote signaling, the remote measurement, the remote signaling and the monitoring of strata, automatic diagnosis and accident record, and has various protection functions. The functions of protection, monitoring and control can be ensured, operation and management are integrated, the unattended operation of the transformer/distribution stations, the operation and the management are integrated, and techniques are used as one part of administration.
Description
Technical field
The present invention relates to a kind of Microcomputer Protection and electric power monitoring system, be applicable to automatic operating, protection, control and the management of transformer station, change/power distribution station, power distribution network and electric power mixing system.
Background technology
Adopt pointer instrument in order to change traditional electric substation, rely on the manual metering data to manage some electric index, with the control and management means of backwardnesss such as manually operating a switch.Many automated systems formerly are provided in the technology, as: " Computerized multifunctional electric power monitoring system " (publishing in " study computer ") 1996. (4): 7-10); " design of centralized transformer station Microcomputer Protection and supervisory control system " (publishes in " North China Electric Power University's journal " 1999.26 (4): 10-14); " transformer station's microcomputer automated system integrated " (http://www.i-power.com.cn/ipower/pwsoft/auto/020423001.html); " based on the full distributed Microcomputer Protection and the monitoring of switch cubicle " (publishes in " Journal of Natural Science of Hunan Normal University " 1998.21 (3): 40-44); " present situation of Japanese Microcomputer Protection and supervisory control system " (publishes in " relay " 1997.25 (2): 53.57); " the comprehensive automatic system of SFZZ2000 transformer station " " network protection relay " (" Application and testing of a microcomputer-based network potector ", " IndustryApplictions 2000.36 (2): 691-696 "; " protection, the voltage source system of measuring, monitoring and control " (Protection, metering, monitoring and control of medium voltage power systems; " Conference Record of Industril and Commerecial Power Systems TechnicalConference 2003:121-128 " or the like above-mentioned system all each has different advantages.Need improved aspect but also all exist.
Summary of the invention
The present invention is in order to adapt to the automation of electric power system; a kind of Microcomputer Protection and electric power monitoring system are provided; also provide a kind of to electric power monitoring control and data acquisition platform; data acquisition and control interface with measurement mechanism, protective device, comprehensive automation device and the various distribution terminal (FTU/TTU/DTU) of various electric power and non-electricity are provided; provide power distribution automation, i.e. the process that restores electricity of the fault detect of supply line, location, Fault Isolation and non-fault line.Comprise the feeder automation of overhead wire, cable, aerial cable joint line.Real-time data base is provided, realizes supervisory control and data acquisition (SCADA-SupervisoryControl and Data Acquisistion) man-machine interface, power distribution automation.Be provided at special real time data defining tool, make things convenient for the foundation of real-time data base, online maintenance function is provided.
The present invention is that the technical scheme that the purpose that reaches above-mentioned is taked is: system of the present invention adopts the structure of open bus system system to contain the independent separately supervising device of putting and contains the protective device of a plurality of Microcomputer Protection monitoring devices that can put the many places electric power system.
All have communication interface on supervising device and the protective device, both transmit information such as monitor command and data acquisition by network communication mode, and control device also is connected with supervisory systems.
Described Microcomputer Protection monitoring device contains the interchange plug-in unit, the computer processor plug-in unit, and power insert, the outlet plug-in unit and exchanges the voltage transformer summation current transformer that plug-in unit is connected.
Described computer processor plug-in unit contains microprocessor; the scene ventilation bus control unit that links with microprocessor respectively; display and protection control unit; the bus transceiver that links with scene ventilation bus control unit output; with database and the self-checking system of protecting control unit to link, with the operation board of protecting control unit and database to link.
The information of each Microcomputer Protection monitoring device in the protective device promptly is sent to supervising device by the communication interface on communication interface, connection bus, Programmable Logic Controller, hub and the supervising device; otherwise the information on the supervising device also promptly is sent in the corresponding Microcomputer Protection monitoring device by above-mentioned passage, and can promptly send supervisory systems to.
Advantage of the present invention is significant.
As above-mentioned structure, Microcomputer Protection of the present invention and electric power monitoring system adopt the communication system of distributed bus system, network opening formula, and be simple in structure, and it is rapid to transmit information fast.Replaced control flow in the technology formerly with the distributed frame of full microcomputerization in supervisory layers on the spot, the operation screen is finished data acquisition, and electric weight shows; relaying protection is patrolled and examined automatically, remote measurement; remote signalling is furnished with following machine monitoring separately, has realized remote measurement, remote signalling, the monitoring function on this stratum.In protection of the present invention and the supervisory control system, at first be the separate storing of protective device and supervising device, can guarantee protection monitoring and controlled function.The precision of measuring is high and reliable.Secondly in the system of the present invention, protective device and supervising device are equipped with communication interface, make system can enter monitor network, supervising device easily by communication network and each Microcomputer Protection monitoring device exchange message, finish data acquisition and monitoring function.Rapidly and accurately.Because protection and supervising device are installed on separately the switch cubicle on the spot, reach the simple requirement of collecting and distributing distributed frame.System of the present invention also has the function of automatic diagnosis and accident record, can realize programming on the spot, shows, adjusts or concentrates on complete operation on the host computer.The protective device of system of the present invention has the kinds of protect performance, as fast tripping protection, and specified time overcurrent protection, zero-sequence current definite time protection, inverse-time overcurrent protection, under-voltage protection, overload protection, automatic reclosing and low-frequency load reduction etc.The present invention contains supervisory systems, has realized the management of manual intelligent.Transporting something containerized row and managing in one.To become/power distribution station unattended operation and operational management be in one, makes technology include an administrative part in.
Description of drawings
Fig. 1 is the structural representation of supervisory control system of the present invention.
Fig. 2 is the concrete structure schematic diagram of Microcomputer Protection monitoring device in the protective device of supervisory control system of the present invention.
Fig. 3-the 1st, the flow chart of the concrete course of work of the Microcomputer Protection monitoring device of Fig. 2.
Fig. 3-the 2nd, flow chart is interrupted in the sampling of Microcomputer Protection monitoring device AC signal.
Embodiment
Further specify the structure of supervisory control system of the present invention below in conjunction with accompanying drawing.
Shown in Figure 1 is the structure of supervisory control system of the present invention.As shown in Figure 1, the control device 1 that contains the main control computer 102 that is coupled to each other and server 101 storing separate with the protective device 8 that contains a plurality of Microcomputer Protection monitoring devices 801,802,803,804 (in the present embodiment, containing 4).When moving on the spot, control device 1 is to be seated in the central control room.And a plurality of Microcomputer Protection monitoring devices are to be seated in power station, plant area, change/power distribution station and other control appliance place respectively.Have upper communication interface 3 on the control device 1, have the next communication interface 7 on the protective device 8.Protective device 8 connects bus 6 by the next communication interface 7, and Programmable Logic Controller 5, hub 4 and upper communication interface 3 link with control device 1.Control device 1 with contain that the higher level dispatches 201, the supervisory systems 2 of administrative department 202 and workshop management 203 links.
Said main control computer 102 be with computer as carrier, on the operating system platform in computer, the operation control system of foundation.In the present embodiment, main control computer of the present invention is based on the WindowsNT/2000 operating system platform.Adopt OO VC++ programming and relevant database technology.Point-to-point high-speed traffic pattern based on ICP/IP protocol.Have the algorithm high efficient and reliable because based on the fault location of Mathematical Modeling, isolate and the algorithm that restores electricity high efficient and reliable; Based on the supply path and the colouring algorithm of graph theory, convenient and swift; Be the objectification modeling, the distribution network modeling tool towards the big object of electric power is provided, templating engineering development management tool is provided, can set up the power distribution network model of facing fast, open interface is provided; Also have friendly interface, develop characteristics easily, powerful picture library unit storehouse, template window storehouse is provided, main picture is all customizable to be provided powerful drawing tool and organizes graphical tool.
Said Programmable Logic Controller 5 is received from connecting bus 6 and is carried the information of coming in, at first data are gathered and carry out passing through hub 4 again after the preliminary treatment, deliver to by upper communication interface 3 in the main control computer 102 of control device 1 and analyze, handle, manage and control.
The information that said supervisory systems 2 receiving control devices 1 that link with control device 1 are sent here is engaged in administrative and commercial management and scheduling.Realized the management of manual intelligent, this also is a big distinguishing feature of supervisory control system of the present invention.
Fig. 2 is the concrete structure of Microcomputer Protection monitoring device 801,802,803,804 in the protective device.As shown in Figure 2.Microcomputer Protection monitoring device 801,802,803,804 of the present invention contains interchange plug-in unit 8011, computer processor plug-in unit 8012, power insert 8013 and outlet plug-in unit 8014.Also have and exchange voltage transformer (PC) 8015 summation current transformers (CT) 8016 that plug-in unit 8011 links.
Contain signal processor 80111 that links with voltage transformer (PC) 8015 summation current transformers (CT) 8016 outputs and the A/D converter 80112 that links with signal processor 80111 outputs in the said interchange plug-in unit 8011.
Exchange plug-in unit 8011 main effects and be voltage transformer (PC) 8015, current transformer (CT) 8016 secondary voltage current signals are converted to 80112 receptible weak electric signals (0～5V) of A/D converter in the sampling plate, simultaneously in addition low-pass filtering is removed various High-frequency Interference.In transfer process, will measure CT and protection CT analog channel separate processes, both satisfied the requirement of certainty of measurement, satisfied requirement again to the protection actuating range.
Said computer processor plug-in unit (abbreviation CPU card) 8012 contains microprocessor and (or claims central processing unit; be called for short CPU) 80121; the local communication bus control unit 80122 that links with microprocessor 80121 respectively; display 80124 and protection control unit 80128, the bus transceiver 80123 that links with the output of local communication bus control unit 80122.With database 80126 and the self-checking system 80127 of protecting control unit 80128 to link.With the operation board 80125 of protecting control unit 80128 and database 80126 to link.
In the present embodiment, CPU card 8012 used CPU are 16 industrial controlling chips of high integration.Sheet is expanded logic outward and all is connected with CPU by the I/O line, and antijamming capability is strong.
CPU card adopts double structure high-speed a/d conversion chip, and maximum 11 road analog input channels can be arranged.
CPU card has 12 way switch amount input circuits, and the amount of opening all inserts CPU after light-coupled isolation.
CPU card has maximum 11 way switch amount output loops, be used for driving outlet anti-trip relay and control relay, the amount of leaving is divided into two classes by the controlled situation of its power supply: a class is that the 24V power supply is through the locking of this device alarm relay normally closed contact, be used to drive output relay, above-mentioned relay mistake outlet tripping operation in the time that cpu fault can being prevented.Another kind of be the 24V power supply without locking, be used for the drive controlling relay.
Also be provided with high speed serialization CANBUS communication interface or RS485 interface on the CPU card,, be used for and communication with protection observing and controlling function opposite independent.
Said power insert 8013 mainly contains the power of alterating and direct current 80131 that at least four group direct voltages can be provided.Be responsible for providing Microcomputer Protection monitoring device 801 needed four groups of direct voltages of the present invention.Mainly be that the needed at least four group direct voltages of this device are exported in the input of direct current 220V or 110V after inversion; + 5V provides working power for CPU and peripheral chip thereof; ± 12V provides working power for analog input loop amplifier and A/D chip, LCD; + 24V provides power supply for leaving the loop; Four groups of voltages all adopt floating ground mode, do not link to each other with casing.
Said outlet plug-in unit 8014 contains anti-trip relay 80144; control relay 80142; the output relay 80143 that links with anti-trip relay 80144 and control relay 80142 outputs, the optical coupling isolator 80141 that links with protection control unit 80128 in the computer processor plug-in unit 8012.Microprocessor (CPU) 80121 links in anti-trip relay 80144 and the computer processor plug-in unit 8012.Protection control unit 80128 links in control relay 80142 and the microprocessor plug-in unit 8012.
Outlet plug-in unit 8014 is provided with control relay 80142, its normal opened contact locking closing loop 24V negative supply.
After the protection action, provide a pair of tripping operation contact, and provide the light signal on remote signal, outlet signal and the panel respectively by the anti-trip relay 80144 that exports plug-in unit; When detecting device and system's operation exception, send alarm signal by the alarm relay that exports plug-in unit.
The workflow of the Microcomputer Protection monitoring device 801 of the invention described above, the control flow of microprocessor CPU 80121 just is as the detailed operation flow process of Fig. 3-1 Microcomputer Protection monitoring device; Fig. 3-the 2nd, AC signal sampling interrupt procedure.
Supervisory control system of the present invention has obtained down the indication of example in the present embodiment.
(1) can connect 256 passages at most for standard configuration (MS-ESD-XXXX), the FTU/TTU/DTU number of each passage can reach 65535 (concrete restriction is by the communication protocol decisions) at most.
(2) real-time index
A, call picture response time: 1s-5s;
B, telemeter time :≤2s;
C, remote signalling delivery time :≤5s;
D, displacement response time :≤2s;
E, remote control response time :≤3s;
F, SOE accident resolution :≤5ms;
G, Fault Isolation and restore electricity the time :≤60s.
(3) system reliability index
A, cpu load rate: normal＜20% fault＜30%;
B, system average non-failure operation time (MTBF): 25000 hours;
C, system's availability:＞99.99%;
D, remote control accuracy: 99.99%;
E, remote signalling accuracy rate: 99.9%.
(4) running environment
Ambient temperature :-25 ℃～70 ℃ relative humidity: 5%～100%.
Above-mentioned index clearly shows, the marked improvement of supervisory control system of the present invention.
Claims (3)
1, a kind of Microcomputer Protection and electric power monitoring system contain control device (1) and protective device (8), contain the main control computer (102) and the server (101) that are coupled to each other in the said control device (1); Contain a plurality of Microcomputer Protection monitoring devices (801,802,803,804) of putting the many places electric power system in the protective device (8); Control device (1) and protective device (8) are put independently of each other, and all have communication interface (7,3); Protective device (8) connects bus (6) by the next communication interface (7), Programmable Logic Controller (5), and hub (4) and upper communication interface (3) link with control device (1);
Said Microcomputer Protection monitoring device (801,802,803,804) contains interchange plug-in unit (8011), computer processor plug-in unit (8012), power insert (8013), outlet plug-in unit (8014) and exchanges voltage transformer (8015) summation current transformer (8016) that plug-in unit (8011) links;
It is characterized in that said computer processor plug-in unit (8012) contains microprocessor (80121); the local communication bus control unit (80122) that links with microprocessor (80121) respectively; display (80124) and protection control unit (80128); the bus transceiver (80123) that links with local communication bus control unit (80122) output; with database (80126) and the self-checking system (80127) of protecting control unit (80128) to link, with the operation board (80125) of protecting control unit (80128) and database (80126) to link.
2, Microcomputer Protection according to claim 1 and electric power monitoring system is characterized in that said power insert (8013) mainly contains the power of alterating and direct current (80131) that at least four group direct voltages are provided.
3, Microcomputer Protection according to claim 1 and electric power monitoring system; it is characterized in that said outlet plug-in unit (8014) contains anti-trip relay (80144); control relay (80142); the output relay (80143) that links with anti-trip relay (80144) and control relay road (80142) output, the optical coupling isolator (80141) that links with protection control unit (80128) in the computer processor plug-in unit (8012).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100162498A CN1323481C (en) | 2004-02-12 | 2004-02-12 | Microcomputer protection and electric power monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100162498A CN1323481C (en) | 2004-02-12 | 2004-02-12 | Microcomputer protection and electric power monitoring system |
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| Publication Number | Publication Date |
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| CN1558529A CN1558529A (en) | 2004-12-29 |
| CN1323481C true CN1323481C (en) | 2007-06-27 |
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| CNB2004100162498A Expired - Fee Related CN1323481C (en) | 2004-02-12 | 2004-02-12 | Microcomputer protection and electric power monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259337A (en) * | 2013-04-22 | 2013-08-21 | 国家电网公司 | Real-time monitoring device and monitoring method for relaying protection equipment |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100347930C (en) * | 2005-03-22 | 2007-11-07 | 东北大学 | System and equipment for collecting and monitoring data of electric power |
| CN102483732A (en) * | 2009-07-07 | 2012-05-30 | 普利治能源集团股份有限公司 | Enterprise smart grid and demand management platform and methods for application development and management |
| CN101710677B (en) * | 2009-12-02 | 2011-11-30 | 中国南方电网有限责任公司超高压输电公司 | Method for indicating equipment failure in cabinet |
| CN102570599B (en) * | 2010-12-30 | 2014-08-27 | 郑州平高自动化有限公司 | Communication method of low-voltage-grade transformer substation |
| CN102609020A (en) * | 2012-04-25 | 2012-07-25 | 山西省电力公司长治供电分公司 | Remote monitoring device of transformer substation |
| CN102692576A (en) * | 2012-06-15 | 2012-09-26 | 黑龙江省电力有限公司检修公司 | Relay protection periodical inspection method |
| CN103094880A (en) * | 2012-12-21 | 2013-05-08 | 李元龙 | Domain relay protection |
| CN104779705A (en) * | 2015-05-06 | 2015-07-15 | 特变电工湖南智能电气有限公司 | Line protection measurement and control method and device |
| CN104967220A (en) * | 2015-07-16 | 2015-10-07 | 国网河南省电力公司漯河供电公司 | Transformer substation monitoring system |
| CN108347032A (en) * | 2018-03-08 | 2018-07-31 | 山东山矿测控技术有限公司 | A method of preventing protective relaying maloperation work |
| CN113300244A (en) * | 2021-06-15 | 2021-08-24 | 新兴铸管股份有限公司 | Protection device for protecting various microcomputers |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2355486Y (en) * | 1998-12-17 | 1999-12-22 | 长沙市精密仪器厂 | Dispersed computer remote protector for electric substation |
-
2004
- 2004-02-12 CN CNB2004100162498A patent/CN1323481C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2355486Y (en) * | 1998-12-17 | 1999-12-22 | 长沙市精密仪器厂 | Dispersed computer remote protector for electric substation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259337A (en) * | 2013-04-22 | 2013-08-21 | 国家电网公司 | Real-time monitoring device and monitoring method for relaying protection equipment |
| CN103259337B (en) * | 2013-04-22 | 2016-05-04 | 国家电网公司 | Relay protection device real-time monitoring device and monitoring method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1558529A (en) | 2004-12-29 |
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