CN201828585U - Portable transformer substation synchronous time ticking and SOE signal generator - Google Patents
Portable transformer substation synchronous time ticking and SOE signal generator Download PDFInfo
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- CN201828585U CN201828585U CN2010205687629U CN201020568762U CN201828585U CN 201828585 U CN201828585 U CN 201828585U CN 2010205687629 U CN2010205687629 U CN 2010205687629U CN 201020568762 U CN201020568762 U CN 201020568762U CN 201828585 U CN201828585 U CN 201828585U
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Abstract
The utility model discloses a transformer substation synchronous time ticking and SOE signal generator which comprises a measurement and control module, and a time ticking module, wherein the measurement and control module comprises a microcontroller, a state quantity acquisition circuit, a switching value output circuit, a man-machine interface circuit and the like, all the circuits are directly connected with the microcontroller through parallel data buses, the time ticking module comprises a field programmable gate array (FPGA), a global positioning system (GPS) receiving module, an electric signal time ticking signal output circuit and an optical signal time ticking signal output circuit, the time ticking module is responsible for generating or acquiring multiple forms of time ticking signals, and the measurement and control module and the time ticking module respectively adopt a 'second' pulse signal and a high-speed two-port RAM to conduct time synchronization. The signal generator can provide multiple forms of time ticking signals and generate a switching value pulse signal with accurate time synchronization, also can receive external time ticking and accurately measure input pulse width, and is light and portable in structural design, thus providing accurate and effective means for debugging and identifying a measurement and control device in a transformer substation.
Description
Technical field
The utility model relate to a kind of novel portable transformer station synchronously to the time and SOE signal generator.Belong to the power automation technical field.
Background technology
In electric substation automation system, the major function of measure and control device comprises of ac collection, quantity of state collection, disconnecting link control, isolating switch asynchronous switch-on etc.These functions all are to realize under the condition of time synchronized, and the accurate and unification of time is crucial in electrical network.(Sequence Of Events, SOE), it is significant for crash analysis to produce sequence of events recording during measure and control device remote signalling displacement.Sequence of events recording has accurate unified time benchmark; can break down and operate; particularly take place under the situation of continuous fault in the short time; analyze and research the easily working conditions change order of action behavior, equipment of various protections, and then analyzing failure cause, fault type, fault generation evolution.This guarantees that for crash analysis safe operation of power system has significance.The control output of measure and control device is used for gauge tap and disconnecting link, and the action of these equipment has certain requirement to the pulsewidth precision that control is left usually.
Electric substation automation system generally adopts GPS to accept the satellite time signal to carry out time synchronized, adopt the IRIG-B sign indicating number realize intelligent substation equipment accurately to the time.The IRIG-B sign indicating number to the time mode outstanding advantage be with time synchronizing signal and second, branch, the time, sky equal time sign indicating number information is loaded in the same signal vehicle.Gps system is accepted the satellite time signal, output IRIG-B timing code sequence, transformer station measurement and control device can hang over unified to the time bus enterprising line time synchronous, the IRIG-B sign indicating number to the time precision height, adopt the bus type topology, simple for structure.
In measure and control device exploitation at present, check and the onsite acceptance debug process, need high-precision specialized equipment that it is tested.In the major function of measure and control device, comparatively ripe means have been arranged for the test of of ac acquisition precision, check.But for measure and control device to the time, quantity of state collection and SOE record, leave performance also lack conveniently, effectively, test and measuring means accurately, therefore exploitation can provide simultaneously high-precise synchronization to the time, test mode amount acquisition performance and control output performance specialized equipment, provide effectively, on-the-spot test means accurately, help to improve the accuracy and the reliability of measure and control device, improve the accuracy of electric power accident ex-post analysis, significant to electric substation automation system.
The utility model content
Technical problem to be solved in the utility model provides a kind of novel test instrument, for automation of transformation substations devices such as measure and control device provide effective on-the-spot test means, improves device performance.
For solving the problems of the technologies described above, the utility model provide a kind of transformer station synchronously to the time and SOE signal generator, comprise a control module and one to the time module, it is characterized in that: will be synchronously to the time with the input of quantity of state, export and combine, provide various ways to the time signal, the output markers is left signal accurately, accurately measures the input state amount.
Described control module comprise a slice microcontroller and be used to finish the switching value output circuit of switching value output, be used for the collection of completion status amount the quantity of state Acquisition Circuit, be used for the man-machine interface circuit of man-machine interface; Described switching value output circuit, quantity of state Acquisition Circuit, man-machine interface circuit directly link to each other with microcontroller by parallel data bus line; Described to the time module be responsible for producing or catch various ways to the time signal, described control module and to the time be provided with between the module: 1. " second ", " branch " pulse signal-line, to the time module to control module output " second ", " branch " pulse to the time signal; 2. the dual port RAM of parallel interface, to the time module to the control module transmission time information, and the routine data communication of two intermodules; 3. parallel bus carries out address decoding and is used to visit other external interfaces.
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: described to the time module adopt and comprise FPGA, be used for realizing to the time signal codec, realize the address decoding of microcontroller external bus simultaneously.
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: described FPGA communicates with GPS and local clock simultaneously, to the time time source can set, both can take from GPS, also can take from local clock.
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: power down keeps RTC to cooperate temperature compensating crystal oscillator to constitute the punctual local clock of high precision, under the condition that does not meet GPS, also can provide to the time signal.
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: outside input to the time signal after photoelectricity is isolated gentle memory device, insert the I/O mouth of FPGA after through level conversion or electricity/light conversion again, the output terminal of described FPGA is exported after by level translator or electric to optic converter, outside input to the time signal and output to the time signal have IRIG-B, divide pulse, three kinds of signal forms of pulse per second (PPS).
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: described switching value output circuit comprises the output of 14 way switch amounts, can be set at synchronous output or output at interval, output time can be set to millisecond, described quantity of state Acquisition Circuit comprises two-way quantity of state collection input, the quantity of state measuring accuracy reaches 2ms, and switching value input, output all produce record.
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: the microcontroller of described control module by asynchronous serial communication interface (UART) dispose to the time GPS receiver module in the module, from GPS receiver module time for reading message.
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: the outside parallel data of the microcontroller of described control module, address bus are realized address decoding by FPGA, the visit peripheral components.
Aforesaid transformer station synchronously to the time and SOE signal generator, it is characterized in that: described switching value output circuit adopts the high-speed light disconnecting relay to drive, and action postpones less than 500us.
The beneficial effects of the utility model are: provide accurately to the time signal and time synchronized the switching value signal, accurately measure state quantity signal, for measure and control device to the time, quantity of state collection, control output function provide convenient, effective, accurate on-the-spot test, measuring means.
Description of drawings
Fig. 1 be in the utility model synchronously to the time and SOE signal generator hardware configuration synoptic diagram.
Fig. 2 is IRIG-B(DC) sign indicating number coded format.
Fig. 3 be in the utility model synchronously to the time and SOE signal generator casing structure design sketch.
Embodiment
Below in conjunction with accompanying drawing the utility model is done concrete introduction.
1, the hardware configuration of measure and control device
Transformer station synchronously to the time and SOE signal generator will be synchronously to the time combine with quantity of state input, output, provide simultaneously various ways accurately to the time signal, the output markers is left signal accurately, quantity of state is measured accurately, close friend's man-machine interface.Hardware configuration and performance to device have higher requirement, Fig. 1 be in the utility model transformer station synchronously to the time and the hardware configuration synoptic diagram of SOE signal generator, it is one two modular structure.Control module is handled acquisition process, the output of switching value signal and the man-machine interface part that comprises state quantity signal.To the time module be responsible for producing or catching multiple time signal.
Control module comprise a slice microcontroller and be used for the quantity of state Acquisition Circuit of completion status amount collection, be used for switching value output the switching value output circuit, be used for the man-machine interface circuit of man-machine interface.Microcontroller is connected by parallel bus with each functional circuit.The present invention adopts the TMS320F28335 type microcontroller of TIX, this chip is 32 technical grade microcontrollers that dominant frequency reaches 150MIPS, have DSP function fast, powerful I/O control function, three tunnel asynchronous communication serial ports, I2C controller, a large amount of on-chip memory, powerful interrupt management, detail programming or the like easily, and this chip has the operating temperature range of broad and stronger antijamming capability, is fit to be applied to industrial control field.
To the time module mainly comprise GPS receiver module and a slice FPGA, the GPS receiver module is responsible for resolving gps signal, provide Greenwich Mean Time message and " second " pulse signal.The present invention adopts the M12T type gps receiver of U.S. Motorola Inc., and " second " pulse signal precision that it provides is less than 60ns, can for automation of transformation substations device provide accurately to the time benchmark.FPGA be to the time module core, be responsible for coding, the decoding of IRIG-B signal, synthetic " second ", " branch " pulse signal, also responsible simultaneously decoding to the microcontroller external bus.The present invention adopts the EP2C8 type FPGA in the CYCLONE II series of U.S. ALTERA company, this is the FPGA of a low cost, low-power consumption, high performance-price ratio, the RAM of 8256 logical blocks, 162kbits, 18 multipliers, two phaselocked loops, 182 configurable I/O mouths are arranged, and rich in natural resources makes it can be used for realizing the single-chip digital system of a more complicated.EP2C8 type FPGA enough finish the present invention to the time module needed function.
2. function realizes
2.1 the coded format of IRIG-B sign indicating number
Aforesaid transformer station synchronously to the time and SOE signal generator adopt IRIG-B(DC) form of sign indicating number encodes to time message and pulse.Fig. 2 is IRIG-B(DC) the sign indicating number synoptic diagram.It is the time string sign indicating number of per second one frame, and each symbol width is 10ms, and a time frame cycle comprises 100 code elements, is pulsewidth coding." on time " reference point of code element is its pulse front edge, and the witness marker of time frame is made up of a location recognition sign and adjacent reference symbols sn, and its width is 8ms; Per 10 code elements have location recognition sign a: P1, P2, and P3 ..., P9, P0, they are the 8ms width; PR is the frame reference point; The pulsewidth of binary one and " 0 " is 5ms and 2ms.A time format frame is from the frame witness marker.Therefore continuous two 8ms broad pulses show the beginning of second, if since second 8ms code element is encoded, are respectively the 0th, 1,2 ..., 99 code elements.In B sign indicating number time format, contain the sky, the time, minute, second, sequential is second-minute-time-sky, shared information bit be 7 of seconds, 7 of branches, the time 10 of 6, days, its position is between P0～P5.P6～P0 comprises other control informations." second " information wherein: the 1st, 2,3,4,6,7,8 code elements; " branch " information: the 10th, 11,12,13,15,16,17 code elements; " time " information: the 20th, 21,22,23,25,26,27 code elements; The 5th, 14,24 code elements are index mark, and width is 2ms.The time, minute, second all represents with binary-coded decimal, low level is preceding, high-order after; Individual position is preceding, ten after.
2.2 to the time function realization
Aforesaid transformer station synchronously to the time and SOE signal generator " branch " pulse signal of " second " pulse signal, light and electric form of IRIG-B sign indicating number, light and electric form of IRIG-B sign indicating number, the light form of RS-485 form is provided, the outside that also can accept simultaneously above form to the time signal, with tested transformer station measurement and control device use identical to the time source synchronous.
Externally output to the time signal time message and " second " pulse signal can also can provide from the GPS receiver module by the RTC that high precision is kept time; Respectively by the microcontroller of control module by serial ports from the GPS receiver module or by the I2C bus from RTC time for reading message, and by and FPGA between the dual port RAM interface write coding module to FPGA." second " pulse signal is directly inputted to FPGA to be used for coding or generation " branch " pulse.FPGA exports time message and " second " pulse from the I/O mouth in conjunction with the standard coding format combination according to IRIG-B through the buffer memory device.The IRIG-B coded signal of output is isolated through light/electricity and is carried out respectively outputing to terminal after 485 level conversion and the electricity/light conversion.Pulse to the time signal convert differential signal to after isolating through light/electricity and export.
The IRIG-B of outside input and pulse to the time signal after photoelectricity is isolated gentle memory device, deliver to the I/O mouth of FPGA after through level conversion or electricity/light conversion again, FPGA gathers these signals and decodes, solve time message and pulse signal and give the microcontroller of control module respectively by dual port RAM and I/O mouth, for its measurement with leave and provide synchronous.
2.3 leave the realization of function
Aforesaid transformer station synchronously to the time and SOE signal generator provide markers to leave the SOE acquisition performance that signal is used to test transformer station measurement and control device accurately.Can leave parameters such as the number of the moment, output of the pulse width of signal, interchannel delay, triggering and cycle by the man-machine interface setting, the microprocessor of control module is exported pulse according to the parameter of setting by GPIO, isolate the back with empty joint form output through buffer memory device and optical relay again, form record simultaneously, can compare with the SOE record of measure and control device with accurate markers and channel number.
2.4 open realization into the collection measurement function
Aforementioned transformer station synchronously to the time and the control module of SOE signal generator in state quantity signal acquisition process circuit, adopt photoelectric isolation technology, the state quantity signal of input is converted to digital signal, microcontroller is gathered, is analyzed it then, calculate the pulsewidth of input state amount, and form record.
2.5 the realization of other functions
Aforementioned transformer station synchronously to the time and the control module of SOE signal generator in man-machine interface partly adopt 128 * 128 dot lcds, microswitch formula keyboard and LED light, the man-machine interface part links to each other with microcontroller by parallel bus, carries out the address decoding visit by FPGA.
The method that adopts this utility model to introduce, for transformer station measurement and control device and other automation of transformation substations devices provide high-precise synchronization to the time, test speed-sensitive switch amount input channel temporal resolution and Channel Response Time, test control output pulse width, for measure and control device to the time, quantity of state collection, control output function provide convenient, effective, accurate on-the-spot test, measuring means.
The foregoing description does not limit the utility model in any form, and all technical schemes that mode obtained of taking to be equal to replacement or equivalent transformation all drop in the protection domain of the present utility model.
Claims (7)
- A transformer station synchronously to the time and SOE signal generator, comprise a control module and one to the time module, it is characterized in that:Described control module comprise a slice microcontroller and be used to finish the switching value output circuit of switching value output, be used for the collection of completion status amount the quantity of state Acquisition Circuit, be used for the man-machine interface circuit of man-machine interface;Described switching value output circuit, quantity of state Acquisition Circuit, man-machine interface circuit directly link to each other with microcontroller by parallel data bus line;Described to the time module be responsible for producing or catch various ways to the time signal, described control module and to the time be provided with between the module: " second ", " branch " pulse signal-line, to the time module to control module output " second ", " branch " pulse to the time signal; The dual port RAM of parallel interface, to the time module to the control module transmission time information, and the routine data communication of two intermodules; Parallel bus carries out address decoding and is used to visit other external interfaces.
- 2. transformer station according to claim 1 synchronously to the time and SOE signal generator, it is characterized in that: described to the time module comprise a slice FPGA, be used for realizing to the time signal codec, realize the address decoding of the outside parallel address of microcontroller, data bus simultaneously.
- 3. transformer station according to claim 2 synchronously to the time and SOE signal generator, it is characterized in that: described FPGA communicates with GPS and local clock simultaneously.
- 4. transformer station according to claim 1 synchronously to the time and SOE signal generator, it is characterized in that: outside input to the time signal after photoelectricity is isolated gentle memory device, insert the I/O mouth of FPGA after through level conversion or electricity/light conversion again, the output terminal of described FPGA is exported after by level translator or electric to optic converter, outside input to the time signal and output to the time signal have IRIG-B, divide pulse, three kinds of signal forms of pulse per second (PPS).
- 5. transformer station according to claim 1 synchronously to the time and SOE signal generator, it is characterized in that: described switching value output circuit comprises 14 way switch amounts output, is set at synchronous output or output at interval; The quantity of state Acquisition Circuit comprises two-way quantity of state collection input.
- According to each described transformer station in the claim 1 to 5 synchronously to the time and SOE signal generator, it is characterized in that: the microcontroller of described control module by asynchronous serial communication interface dispose to the time GPS receiver module in the module, from GPS receiver module time for reading message.
- 7. transformer station according to claim 1 synchronously to the time and SOE signal generator, it is characterized in that: described switching value output circuit adopts the high-speed light disconnecting relay to drive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205687629U CN201828585U (en) | 2010-10-20 | 2010-10-20 | Portable transformer substation synchronous time ticking and SOE signal generator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205687629U CN201828585U (en) | 2010-10-20 | 2010-10-20 | Portable transformer substation synchronous time ticking and SOE signal generator |
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| CN201828585U true CN201828585U (en) | 2011-05-11 |
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| CN2010205687629U Expired - Lifetime CN201828585U (en) | 2010-10-20 | 2010-10-20 | Portable transformer substation synchronous time ticking and SOE signal generator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420666A (en) * | 2011-08-25 | 2012-04-18 | 国网电力科学研究院 | Multifunctional clock synchronization device |
| CN102901944A (en) * | 2012-09-27 | 2013-01-30 | 中国电力科学研究院 | B code clock synchronization device for field calibration of electronic mutual inductors |
| CN103490504A (en) * | 2011-10-28 | 2014-01-01 | 安徽省电力公司芜湖供电公司 | Method for testing inter-station SOE through substation measuring and control device telecommand quantity testing system |
| CN104215803A (en) * | 2014-09-19 | 2014-12-17 | 国家电网公司 | Synchronous standard source and control method applied to distributive type intelligent testing platform |
| CN106339347A (en) * | 2016-08-30 | 2017-01-18 | 南京国电南自电网自动化有限公司 | Unified transformer substation secondary equipment synchronizing device time setting method |
| CN107329428A (en) * | 2017-07-11 | 2017-11-07 | 中国南方电网有限责任公司 | A kind of measure and control device switched based on double gps satellite positioning system signal source interfaces |
| CN105892446B (en) * | 2016-04-14 | 2018-10-26 | 云南电网有限责任公司电力科学研究院 | A kind of intelligent substation automation equipment test equipment and method |
-
2010
- 2010-10-20 CN CN2010205687629U patent/CN201828585U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420666A (en) * | 2011-08-25 | 2012-04-18 | 国网电力科学研究院 | Multifunctional clock synchronization device |
| CN103490504A (en) * | 2011-10-28 | 2014-01-01 | 安徽省电力公司芜湖供电公司 | Method for testing inter-station SOE through substation measuring and control device telecommand quantity testing system |
| CN103490504B (en) * | 2011-10-28 | 2015-07-15 | 国家电网公司 | Method for testing inter-station SOE through substation measuring and control device telecommand quantity testing system |
| CN102901944A (en) * | 2012-09-27 | 2013-01-30 | 中国电力科学研究院 | B code clock synchronization device for field calibration of electronic mutual inductors |
| CN104215803A (en) * | 2014-09-19 | 2014-12-17 | 国家电网公司 | Synchronous standard source and control method applied to distributive type intelligent testing platform |
| CN105892446B (en) * | 2016-04-14 | 2018-10-26 | 云南电网有限责任公司电力科学研究院 | A kind of intelligent substation automation equipment test equipment and method |
| CN106339347A (en) * | 2016-08-30 | 2017-01-18 | 南京国电南自电网自动化有限公司 | Unified transformer substation secondary equipment synchronizing device time setting method |
| CN107329428A (en) * | 2017-07-11 | 2017-11-07 | 中国南方电网有限责任公司 | A kind of measure and control device switched based on double gps satellite positioning system signal source interfaces |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20110511 |