CN101030711B - Microcomputer protecting controller - Google Patents
Microcomputer protecting controller Download PDFInfo
- Publication number
- CN101030711B CN101030711B CN2007100516710A CN200710051671A CN101030711B CN 101030711 B CN101030711 B CN 101030711B CN 2007100516710 A CN2007100516710 A CN 2007100516710A CN 200710051671 A CN200710051671 A CN 200710051671A CN 101030711 B CN101030711 B CN 101030711B
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- microcomputer protecting
- protecting controller
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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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- Emergency Protection Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention is concerned with computer protecting monitor device, belonging to power system auto-control process field and it is fit to form the intelligent terminal device of integration automatic system with 35 KV and less. It relates to CPU, cabinet, plug-in board and operation system. The plug-in board relates to power supply, main board, simulation/ transformer board, relay board, keyboard/ display. The said operation system is embedded task module. The task module relates to protect unit, test unit, control unit, monitor unit, communication unit, fault recorder unit and accident recorder unit. This equipment of invention can be adjusted easily with high intelligent integration and it is fit for installing on switchboard or grouping screen together. Each part fixes alone to disperse heat with strong anti-jamming ability to be replaced.
Description
Technical field
The present invention relates to a kind of microcomputer protecting controller, belong to the automatic control technology of power system field, can be installed on the switch cubicle at the scene on the spot or concentrated group screen, be particularly suitable for constituting the intelligent end device of 35KV and following electrical network electricity consumption complex automatic system.
Background technology
In the high, medium and low voltage electric power system; use the more and more of integrated digital automation equipment; integrated trend has appearred in relaying protection in the world, operation control and monitoring, and external major company such as ABB, GE, SI EMENS has all released the representative products of a series of integrated digital protection.Domestic representative company have Nan Rui, south from, four directions, Dongfang Electronics, Xu Ji etc.
Domestic present complex automatic system is divided into two types: a kind of is the system that adopts measure and control device and protective device to connect and compose by communication modes, promptly adopts the common electric substation automation system of forming of digital protection device and measure and control device; Another kind is to adopt the device with comprehensive function, and defencive function and observing and controlling function are integrated in one, and realizes relaying protection, measurement, control, state measurement, functions such as communication.
The multifunctional digital relay of most of domestic-developeds (being intelligent protection device), with abroad comparing, on showing, amount of information is few, can't show primary system figure, can't show failure wave-recording etc.; On function, the integrated level deficiency lacks senior application function: as failure wave-recording, clock synchronization, logout, PLC function etc.And external product, though design philosophy is leading, application has a lot of inconveniences at home, most typical is not possess the measurement current transformer on the hardware, different with domestic custom; Another is non-Chinese interface, the domestic user is used cause a lot of inconvenience.
Summary of the invention
The objective of the invention is to; the shortcoming that overcomes prior art is with not enough; a kind of microcomputer protecting controller is provided; this device integrates multiple functions such as protection, measurement, control, monitoring, communication, logout, failure wave-recording, makes it to constitute the intelligent end device of 35KV and following electrical network electricity consumption complex automatic system.
Technical scheme of the present invention is: described a kind of microcomputer protecting controller, and it comprises CPU, cabinet, card, operating system; Described card comprises power panel, mainboard, analog quantity/instrument transformer plate, relay board, keyboard/display panel; Described operating system is embedded task module; Described task module includes protected location, measuring unit, control unit, monitoring means, communication unit, failure wave-recording unit, event recording unit.
On the invention described above technical scheme basis, have the supplementary technology content, further technical scheme is:
1, described operating system has an online programming communication interface, is used for online programming, freely downloads the protection software module; Described task module be a kind of can be according to the requirement of task priority determine the to execute the task embedded real-time operation module of order.
2, described mainboard comprises: single-chip microcomputer, field programmable device, high-precision A/D sampling device, photoelectricity are isolated input/output interface, fixed value memory, breaker tripping and closing logical circuit, variable connector, low pass filter, high precision operating amplifier, current limit protection, analog channel interface, hardware watchdog, photoelectricity isolated communication interface.
3, described cabinet inside and card have the screen of anti-electromagnetic interference.
4, the distance between described each card is the 8-55 millimeter.
5, microcomputer protecting controller as claimed in claim 1 is characterized in that, described cabinet is a standard 6U half storey cabinet, the installation of independently pegging graft of its each card.
6, described online programming communication interface is a jtag interface.
7, described CPU is by communication interface and monitoring equipment UNICOM, and this monitoring equipment is used for microcomputer protecting controller is monitored communication; Described communication interface is two-way RS422/RS485 networking communication interface or two-way CAN interface.
8, described keyboard/display panel adopts LCD, is used for the man-machine interface close friend, full-localized demonstration, and show measurement data, protection information, fault waveform.
9, described analog quantity/instrument transformer plate is the AC sampling plug-in unit, adopts the miniature precision current-voltage transformer, comprises electric current, voltage analog are isolated and adjustment.
The technique effect of microcomputer protecting controller of the present invention is: integrate multiple functions such as protection, measurement, control, monitoring, communication, logout, failure wave-recording; can be contained on the switch cubicle easily on the spot or concentrated group screen, be the intelligent end device that constitutes 35KV and following electrical network electricity consumption complex automatic system.In addition, structure division is also by having solved the anti-electromagnetic interference problem of device to the Shielding Design of cabinet, printed board and the technical measures such as design of circuit board spacing.The installation of independently pegging graft of each card, good heat dissipation, antijamming capability is strong, and is convenient to change and safeguards.
Description of drawings
Fig. 1 is the hardware structure diagram of microcomputer protecting controller of the present invention;
Fig. 2 is the described embodiment microcomputer protecting controller keyboard of Fig. 1/display panel layout plan;
Fig. 3 is the described embodiment microcomputer protecting controller of a Fig. 1 card structural representation;
Fig. 4 is Fig. 1 described embodiment microcomputer protecting controller communication interface and connected mode schematic diagram.
The member name of each figure number is called among the figure:
1-CPU, 2-cabinet, 3-card, 4-operating system, 5-power panel, 6-mainboard, 7-analog quantity/instrument transformer plate, 8-relay board, 9-keyboard/display panel, 10-online programming communication interface, 11-communication interface, 12-monitoring equipment.
Embodiment
It is as follows that the invention will be further described in conjunction with the accompanying drawings and embodiments: as Fig. 1-shown in Figure 4: a kind of microcomputer protecting controller, and it has CPU1, cabinet 2, card 3, operating system 4; Described card 3 has power panel 5 (select the switchette power supply for use, operating voltage range is big, efficient is high), mainboard 6, analog quantity/instrument transformer plate 7, relay board 8, keyboard/display panel 9; Described operating system 4 is embedded task module; Described task module includes protected location, measuring unit, control unit, monitoring means, communication unit, failure wave-recording unit, event recording unit; Described operating system 4 has an online programming communication interface 10, is used for online programming, freely downloads the protection software module; Described task module be a kind of can be according to the requirement of task priority determine the to execute the task embedded real-time operation module of order; Described mainboard 6 has: single-chip microcomputer (select 32 single-chip microcomputers for use, model is AT91M40800), field programmable device, high-precision A/D sampling device and variable connector (selecting MAX125CEAX for use), photoelectricity are isolated input/output interface, fixed value memory, breaker tripping and closing logical circuit, single order active low-pass filter and high precision operating amplifier (selecting OP497 for use), current limit protection, analog channel interface, hardware watchdog, photoelectricity isolated communication interface; Described cabinet 2 inside and card 3 have the screen of anti-electromagnetic interference, and in Fig. 3, the cabinet 2 of this device adopts rustproof aluminium sheet (LF6), adopts the thin plate of 2.5mm, remakes electric conductive oxidation after the shaping and handles; Two sides opening before and after the cabinet, all the other each faces are that section bar forms with the screw installation, and assembling is easy, and seam is tight, can prevent the hole seam leakage, and ground connection is good, and device can pass through static discharge interference test and power frequency magnetic field interference test smoothly; Among Fig. 3, the shielding of each circuit printing plate and spacing limit and have solved electromagnetic interference problem for another example; Distance between described each card is the 8-55 millimeter, and present embodiment is preferably 10 millimeters, and also optional 8 millimeters then is another embodiment if elect 55 millimeters as; Described cabinet 2 is a standard 6U half storey cabinet, the installation of independently pegging graft of its each card; Described online programming communication interface 10 is the JTAG mouth; Described CPU1 is by communication interface 11 and monitoring equipment 12 UNICOMs, and this monitoring equipment 12 is used for microcomputer protecting controller is monitored communication; Described communication interface 1 is two-way RS422/RS485 networking communication interface or two-way CAN interface; Described keyboard/display panel 9 adopts LCD, is used for the man-machine interface close friend, full-localized demonstration, and show measurement data, protection information, fault waveform; Described analog quantity/instrument transformer plate 7 is AC sampling plug-in units, adopts the miniature precision current-voltage transformer, comprises electric current, voltage analog are isolated and adjustment, has both guaranteed precision, has reduced the volume of device again.
The function of 1,2,3,4 pair of microcomputer protecting controller of the present invention, operation principle and structure are described further as follows more in conjunction with the accompanying drawings:
This apparatus function height is integrated, promptly integrates multiple functions such as protection, measurement, control, monitoring, communication, record ripple, logout.Be specially: utilize Modern Transducer Technology, digital control technology and microprocessor technology, computer control and communication network technique, realized the digital relay and monitoring digitlization, finished: the real-time collection of circuit line voltage, protection line current, measurement line current, zero-sequence current, residual voltage; The calculating of active power, reactive power, harmonic power, power factor, frequency; Kinds of protect functions such as the monitoring of working state of circuit breaker, isolation knife/ground connection cutter state, operation circuit broken string, PT broken string and syllogic (direction) current protection or inverse time protection, overload, low-frequency load reduction, ground connection, three-phase single shot reclosing, under voltage protection, overvoltage protection, the alarm of PT broken string, the alarm of control loop broken string.
The operation principle of this device: as shown in Figure 1, voltage from electrical network primary equipment (CT and PT), current signal are after the modulate circuit conversion, convert digital quantity to and come computing, processing by single-chip microcomputer, CPU also accepts the pulse signal of isolating through photoelectricity and remote control input signal amount and the input signal amount by operation generations such as keyboard 6 inquiries, the definite values of adjusting simultaneously.All these semaphores just send corresponding breaker tripping and closing signal and alarm signal to the jump, closing loop that drives circuit breaker through the comprehensive computing of CPU, processing when satisfying the fault actions condition, the excision fault loop, and the alarm signal relay is connected the alarm loop.Simultaneously, CPU sends corresponding position, status signal.All signal measurements, protection operating value, breaker tripping and closing displacement record, the process of adjusting, query script, fault type, fault waveform, mains frequency, time etc. all can show on LCD.Communication RS485 interface and CAN interface through photoelectricity is isolated communicate with the remote dispatching center, realize functions such as remote control, remote regulating, remote measurement.
Have in Fig. 2 keyboard/display panel layout plan: liquid crystal display; indicator light (comprise operation, communication, separating brake, combined floodgate, protection advance notice, protection action, control back broken string); control and operation push-button (including definite, write off), three locks (including this locality, a distant place, setting).
The interference protection measure that the prior art microcomputer protecting device adopts on hardware has the electromagnetic susceptibility that blocks coupling channel and improve sensitive equipment.Microcomputer protecting controller of the present invention has been done improvement in order to solve and improve anti-electromagnetic interference problem on apparatus structure:
First: in Fig. 3, the cabinet 2 of this device adopts rustproof aluminium sheet (LF6), adopts the thin plate of 2.5mm, remakes electric conductive oxidation after the shaping and handles.Two sides opening before and after the cabinet, all the other each faces are installed with section bar material screw and are formed, and assembling is easy, and seam is tight, can prevent the hole seam leakage, and ground connection is good, and device just can pass through static discharge interference test and power frequency magnetic field interference test smoothly.
Second: in Fig. 3, install between each circuit printing plate and the mainboard 6 and convenient to remove, the solution that the shielding of printed board and spacing are good electromagnetic interference problem.
Claims (6)
1. a microcomputer protecting controller is characterized in that, it comprises CPU (1), cabinet (2), card (3), operating system (4); Described card (3) comprises power panel (5), mainboard (6), analog quantity/instrument transformer plate (7), relay board (8), keyboard/display panel (9); Described operating system (4) is embedded task module; Described task module includes protected location, measuring unit, control unit, monitoring means, communication unit, failure wave-recording unit, event recording unit;
Described operating system (4) has an online programming communication interface (10), is used for online programming, freely downloads the protection software module; Described task module be a kind of can be according to the requirement of task priority determine the to execute the task embedded real-time operation module of order;
Described mainboard (6) comprising: single-chip microcomputer, field programmable device, high-precision A/D sampling device, photoelectricity are isolated input/output interface, fixed value memory, breaker tripping and closing logical circuit, variable connector, low pass filter, high precision operating amplifier, current limit protection, analog channel interface, hardware watchdog, photoelectricity isolated communication interface;
Described cabinet (2) inside and card (3) have the screen of anti-electromagnetic interference, and the distance between each card is the 8-55 millimeter.
2. microcomputer protecting controller as claimed in claim 1 is characterized in that, described cabinet (2) is a standard 6U half storey cabinet, the installation of independently pegging graft of its each card.
3. microcomputer protecting controller as claimed in claim 1 is characterized in that, described online programming communication interface (10) is a jtag interface.
4. microcomputer protecting controller as claimed in claim 1 is characterized in that, described CPU (1) is by communication interface (11) and monitoring equipment (12) UNICOM, and this monitoring equipment (12) is used for microcomputer protecting controller is monitored communication; Described communication interface (11) is two-way RS422/RS485 networking communication interface or two-way CAN interface.
5. microcomputer protecting controller as claimed in claim 1 is characterized in that, described keyboard/display panel (9) adopts LCD, is used for the man-machine interface close friend, full-localized demonstration, and show measurement data, protection information, fault waveform.
6. microcomputer protecting controller as claimed in claim 1 is characterized in that, described analog quantity/instrument transformer plate (7) is the AC sampling plug-in unit, adopts the miniature precision current-voltage transformer, comprises electric current, voltage analog are isolated and adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100516710A CN101030711B (en) | 2007-03-15 | 2007-03-15 | Microcomputer protecting controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100516710A CN101030711B (en) | 2007-03-15 | 2007-03-15 | Microcomputer protecting controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101030711A CN101030711A (en) | 2007-09-05 |
| CN101030711B true CN101030711B (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100516710A Expired - Fee Related CN101030711B (en) | 2007-03-15 | 2007-03-15 | Microcomputer protecting controller |
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| Country | Link |
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| CN (1) | CN101030711B (en) |
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| CN101895085B (en) * | 2009-05-18 | 2013-03-27 | 许昌永新电气股份有限公司 | Power supply circuit protective device and protective control method |
| CN101841189B (en) * | 2010-05-06 | 2012-10-03 | 国电南瑞科技股份有限公司 | Centralized protection, measurement and control device and realizing method thereof |
| CN102403786A (en) * | 2010-09-08 | 2012-04-04 | 合肥德盛电器有限责任公司 | Comprehensively protecting measurement and control device for mine |
| CN102262200B (en) * | 2010-12-07 | 2013-04-17 | 鞍钢集团矿业公司 | Portable power quality and fault recording integrated device |
| CN102354923B (en) * | 2011-06-22 | 2015-03-11 | 珠海万力达电气自动化有限公司 | Switch cabinet intelligence protection measuring and displaying apparatus |
| CN102427513A (en) * | 2011-10-10 | 2012-04-25 | 深圳市金锐显数码科技有限公司 | Television host and power supply integration board |
| CN102545087A (en) * | 2012-01-12 | 2012-07-04 | 天津市电力公司 | Multifunctional power distribution cabinet special for microgrid system |
| CN102611201A (en) * | 2012-03-16 | 2012-07-25 | 航天科工深圳（集团）有限公司 | On-line monitoring system of power distribution cabinet |
| CN103378651A (en) * | 2012-04-12 | 2013-10-30 | 辽宁君和泰科技有限公司 | Digitalized intelligent terminal |
| FR2989848B1 (en) * | 2012-04-18 | 2014-04-11 | Schneider Electric Ind Sas | SECURED DETECTION SYSTEM |
| CN103116300A (en) * | 2013-01-18 | 2013-05-22 | 山东三龙智能技术有限公司 | Novel remote terminal unit (RTU) |
| CN103207610A (en) * | 2013-04-08 | 2013-07-17 | 国家电网公司 | Integrated device for auxiliary facilities of intelligent transformer substation |
| CN103607041A (en) * | 2013-05-02 | 2014-02-26 | 国家电网公司 | Grid line protecting and monitoring device |
| CN103490516B (en) * | 2013-10-15 | 2015-05-27 | 国家电网公司 | Power distribution automation feeder terminal with fault wave recording function and method thereof |
| CN105071276A (en) * | 2015-08-26 | 2015-11-18 | 嘉兴市正辉电力设备有限公司 | Medium-voltage looped-network vacuum circuit breaker cabinet |
| CN105471099A (en) * | 2015-11-27 | 2016-04-06 | 宁波三星医疗电气股份有限公司 | Full service life theory-based feeder terminal unit |
| CN105810037A (en) * | 2016-04-15 | 2016-07-27 | 国网江苏省电力公司盐城供电公司 | Communication simulation type medium-voltage microcomputer comprehensive protection device |
| CN107895930B (en) * | 2017-11-26 | 2023-11-07 | 湖北恒晶电气有限公司 | Intelligent on-site general microcomputer protection device and control method thereof |
| CN107968485A (en) * | 2017-12-20 | 2018-04-27 | 陈旭斌 | A kind of adaptive microcomputer protecting controller of Multi-netmouth |
| CN110011214A (en) * | 2019-05-10 | 2019-07-12 | 江苏现代电力科技股份有限公司 | A kind of high-tension switch cabinet secondary comprehension device |
| CN112003069B (en) * | 2020-07-13 | 2022-04-26 | 深圳供电局有限公司 | Protection measurement and control device and system |
| CN113485170B (en) * | 2021-06-02 | 2022-08-26 | 艾斯特国际安全技术（深圳）有限公司 | Industrial grade control board |
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| Publication number | Publication date |
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| CN101030711A (en) | 2007-09-05 |
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Assignee: Wuhan Changhai Electrical Technology Development Co., Ltd. Assignor: No.712 Inst., China Ship Heavy Industry Group Co. Contract record no.: 2011420000267 Denomination of invention: Microcomputer protecting controller Granted publication date: 20111130 License type: Exclusive License Open date: 20070905 Record date: 20111228 |
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Granted publication date: 20111130 Termination date: 20140315 |