CN102013728A - IEC61850 (International Electrotechnical Commission 61850) standard based method and device for realizing regional integrated protection measurement and control - Google Patents
IEC61850 (International Electrotechnical Commission 61850) standard based method and device for realizing regional integrated protection measurement and control Download PDFInfo
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- CN102013728A CN102013728A CN2010105044385A CN201010504438A CN102013728A CN 102013728 A CN102013728 A CN 102013728A CN 2010105044385 A CN2010105044385 A CN 2010105044385A CN 201010504438 A CN201010504438 A CN 201010504438A CN 102013728 A CN102013728 A CN 102013728A
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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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Abstract
The invention discloses an IEC61850 (International Electrotechnical Commission 61850) standard based method and device for realizing regional integrated protection measurement and control, solving the problem on the economic pressure caused by the requirement of large amount of protection measurement and control devices and optical switches since one protection measurement and control device only completes one interval of protection measurement and control function in the prior art, as well as the problems of high complexity, high implementation difficulty, potential safety hazards and larger economic pressure of the whole protection measurement and control device if all intervals of protection measurement and control function in the whole station are processed by one protection measurement and control device in the prior art. The invention designs the IEC61850 standard based method for realizing regional integrated protection measurement and control, which realizes that each protection measurement and control device accomplishes centralized protection measurement and control function of one area in the transformer substation, not only can completely reach an IEC61850 standard, but also can realize information sharing and interlock among intervals, without using any optical switch, thereby reducing system cost and simplifying system structure.
Description
Technical field
The invention belongs to the intelligent substation field, relate to the protection investigating method of intelligent substation, particularly a kind of protection investigating method of the set of regions accepted way of doing sth based on the IEC61850 standard.
Background technology
The intelligent substation construction is that China's intelligent grid is built one of most critical part.Compare with traditional transformer station, intelligent substation has the unified Modeling of intelligent information being carried out system, adopts advanced fiber optic Ethernet technology, realizes information sharing and interoperability, strengthens electric network reliability, economy.Owing to use optical cable to replace a large amount of cables, significantly reduce the workload of construction maintenance simultaneously, reduce the copper metal consumption, low-carbon environment-friendly.At present domesticly mainly concentrate on the transformer station of 110KV and above electric pressure in the research of intelligent substation, relate to for the transformer station of 35KV and following electric pressure less, the domestic 35KV intelligent substation that does not meet the IEC61850 standard fully.
The protection measure and control device that is applied to intelligent substation at present is mainly the device towards the monospace, and promptly a protection measure and control device is only handled the data at an interval, only finishes the defencive function or the observing and controlling function at an interval.The protection measure and control device quantity that needs in intelligent substation system is huge, and will realize that the information sharing of these devices must dispose more expensive optical switch.These all make the complexity of intelligent substation system improve greatly, and initial stage construction cost increases greatly, have limited the popularization of intelligent substation technology in the low-voltage grade.
Also have in electric substation automation system at present towards the protection measure and control device at full station and use, promptly a device is handled all data at interval of full station, finishes all protection observing and controlling functions at interval of full station.Though it is integrated that this kind protective device has been finished full station, its shortcoming is also comparatively obvious: 1) whole device complexity improves greatly, breaks down easily; 2) bigger to the power supply power consumption requirement, be difficult for realizing; 3) whole device caloric value is big, and the heat radiation difficulty can not be moved under hot environment; 4) this protective device must be equipped with two simultaneously, and is standby each other, could guarantee the fail safe of transformer station, and cost doubles.5) still need a large amount of expensive optical switchs.
Summary of the invention
The present invention is the economic pressures that huge quantity caused of required protection measure and control device and optical switch in order to solve in the prior art protection measure and control device and only to finish the protection observing and controlling function at an interval not only; Also handle when helping all at interval protection observing and controlling functions of station the complexity of whole device, being difficult to carry out property, insecurity and bigger economic pressures in order to solve in the prior art protection measure and control device; A kind of implementation method and device of the regional integrated protection observing and controlling based on the IEC61850 standard have been designed; realized each the protection measure and control device finish the centralized protection observing and controlling function in a zone in the transformer station; not only can meet the IEC61850 standard fully; and under the situation that needn't use optical switch; just can realize information sharing; realize the locking of compartment connection, reduce the cost of system, simplied system structure.
The present invention for realizing the technical scheme that goal of the invention adopts is: a kind of implementation method of the regional integrated protection observing and controlling based on the IEC61850 standard; above method is the digital signal to the output of the sample devices in the intelligent substation; hypervisor by CPU is sampled; handle; the definite value contrast; realize the process layer primary equipment in the intelligent substation protected according to comparing result; in the protection measure and control device, set up the ethernet interface plug-in unit; the ethernet interface plug-in unit has N data sample port and N data transmit port; N is more than or equal to 2 smaller or equal to 4 positive integer, carries out following steps on this basis:
A, in the intelligent substation system all are at interval carried out area dividing according to the structure of cable line, at interval position;
B, for any one zone, encoded in the interval in the zone, and deposit in the buffer according to corresponding codes by the current and voltage signals of N data sample port with the sample devices collection;
Obtain real time data after c, the CPU computing, call standard value data in the permanent memory, and carry out the definite value contrast with real time data according to corresponding codes;
D, CPU are sent to intelligent terminal corresponding encoded interval on by N data transmit port with control signal according to the result of contrast and corresponding codes.
The invention still further relates to a kind of regional integrated protection measure and control device based on the IEC61850 standard; by above-mentioned implementation method process layer primary equipment protected observing and controlling; comprise in the structure and receive the data-interface that powers on the stream voltage signal and be connected at interval in the transformer station with intelligent terminal; CPU; and supporting power-supply circuit; comprise N data sample port and N data transmit port in the above-mentioned data-interface; N data sample port receives the current and voltage signals that sample devices collects in real time; send to CPU; be sent to intelligent terminal by N data transmit port after the central processing unit for processing; above N data sample port and N data transmit port are positioned in the circuit board; anabolic process layer ethernet interface plug-in unit, N are smaller or equal to 4 positive integer more than or equal to 2.
The invention has the beneficial effects as follows: utilization the present invention can realize the facing area formula integrated protection observing and controlling function to transformer station; break in the prior art device based on the protection measure and control device of implementation method of the present invention and finished an interval; a device is finished all observing and controlling patterns at interval of full station; realized the protection observing and controlling pattern of device facing area; above-mentioned pattern needn't use optical switch just can realize information sharing; realize the locking of compartment connection; the cost of reduction system; make the comparatively simple of system configuration change; reduce construction and maintenance difficulties, improved the stability of power system operation.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the application structure schematic diagram of the present invention in transformer substation system.
In the accompanying drawing, 1-1,1-2 ... 1-N is a sample devices, 2-1,2-2 ... 2-N is the data sampling port, 3-1,3-2 ... 3-N is the data sending terminal mouth, 4-1,4-2 ... 4-N is an intelligent terminal, the 5th, and CPU.
Embodiment
A kind of implementation method of the regional integrated protection observing and controlling based on the IEC61850 standard; above method is the digital signal to the output of the sample devices in the intelligent substation; hypervisor by CPU 5 is sampled; handle; the definite value contrast; realize the process layer primary equipment in the intelligent substation protected according to comparing result; in the protection measure and control device, set up the ethernet interface plug-in unit; the ethernet interface plug-in unit has N data sample port 2-1; 2-2 ... 2-N and N data transmit port 3-1; 3-2 ... 3-N; N is more than or equal to 2 smaller or equal to 4 positive integer, carries out following steps on this basis:
A, in the intelligent substation system all are at interval carried out area dividing according to the structure of cable line, at interval position;
B, for any one zone, encoded in the interval in the zone, and by N data sample port 2-1,2-2 ... 2-N is with sample devices 1-1,1-2 ... the current and voltage signals that 1-N gathers deposits in the buffer according to corresponding codes;
Obtain real time data after c, CPU 5 computings, call standard value data in the permanent memory, and carry out the definite value contrast with real time data according to corresponding codes;
D, CPU 5 are passed through N data transmit port 3-1,3-2 according to the result and the corresponding codes of contrast ... 3-N is sent to intelligent terminal 4-1,4-2 on the corresponding encoded interval with control signal ... 4-N.
CPU 5 is as follows to the treatment step that any one goes up the current and voltage signals of gathering at interval:
1) the protection measure and control device starts the dsp processor in the CPU 5, and dsp processor is by N data sample port 2-1,2-2 ... 2-N obtains the high frequency sampled data of the equal time section that bay device sends and the status signal of process layer equipment;
2) dsp processor obtains the equal time section high frequency sampled data of filtering high order harmonic component by the high order harmonic component part of the high frequency sampled data of wave digital lowpass filter filtering equal time section;
3) use the zero crossing detection method that the high frequency sampled data of filtering high order harmonic component is carried out frequency-tracking, and calculate the frequency departure of current cycle, utilize frequency departure to calculate the electrical network cycle in this moment again;
4) frequency of bay device is ripple 32 points weekly, with being the sampling instant of 32 equiangular sampling points behind electrical network cycles 32 branch such as grade, by supporting parabola interpolation algorithm, calculates and obtains equal angles low-frequency data at interval;
5) with the low-frequency data of the equal angles section that obtains through after the fast Fourier transform, calculate real time data, compare with standard value data in the permanent memory, draw the protection control signal;
6) dsp processor will protect control signal to be sent to intelligent terminal by the data sending terminal mouth by communication protocol, realize the protection to process layer primary equipment.
Also comprise the ARM9 processor in the above-mentioned CPU 5, the ARM9 processor will protect control signal to report the supervisory control of substation center by the station level communication interface.
Also comprise the ARM7 processor that is connected with the human-computer interaction device in the above-mentioned CPU 5, the ARM7 processor sends to intelligent terminal with human-computer interaction device's control command.
Above-mentioned sample devices 1-1,1-2 ... the sample frequency of 1-N is ripple 80 points weekly.
Above-mentioned wave digital lowpass filter is 20 rank with the Hamming THE DESIGN OF WINDOW FUNCTION, the FIR wave digital lowpass filter that cut-off frequency is 600Hz.
The invention still further relates to a kind of regional integrated protection measure and control device based on the IEC61850 standard; by above-mentioned implementation method process layer primary equipment protected observing and controlling; comprise in the structure and receive the data-interface that powers on the stream voltage signal and be connected at interval in the transformer station with intelligent terminal; CPU 5; and supporting power-supply circuit; comprise N data sample port 2-1 in the above-mentioned data-interface; 2-2 ... 2-N and N data transmit port 3-1; 3-2 ... 3-N; N data sample port 2-1; 2-2 ... 2-N receives sample devices 1-1 in real time; 1-2 ... the current and voltage signals that 1-N collects; send to CPU 5; CPU 5 is handled the back by N data transmit port 3-1; 3-2 ... 3-N is sent to intelligent terminal 4-1; 4-2 ... 4-N; above N data sample port 2-1; 2-2 ... 2-N and N data transmit port 3-1; 3-2 ... 3-N is positioned in the circuit board; anabolic process layer ethernet interface plug-in unit, N are smaller or equal to 4 positive integer more than or equal to 2.
Above-mentioned CPU 5 comprises three processor structures of being made up of ARM7 processor, ARM9 processor, dsp processor and supporting communication bus, dsp processor will control and interrupt signal control and process layer ethernet interface plug-in unit between communicate by letter, the ARM7 processor is connected with the human-computer interaction device, and the ARM9 processor is connected with Surveillance center by the station level communication interface.
The chip model of above-mentioned dsp processor is TMS320F2812, and the chip model of ARM7 processor is LPC2138, and the chip model of ARM9 processor is GWIXP425BDT.
The present invention can realize the protection observing and controlling function of regional integrated ground to transformer substation system; broken in the prior art based on the protection measure and control device of implementation method of the present invention that a device is finished interval, a device is finished all observing and controlling patterns at interval of full station; realized the protection observing and controlling pattern of device facing area; above-mentioned pattern needn't use optical switch just can realize information sharing; realize the locking of compartment connection; the cost of reduction system; make the comparatively simple of system configuration change; reduce construction and maintenance difficulties, improved the stability of power system operation.
The present invention in the specific implementation; the protection measure and control device is by area configurations; a zone comprises 2-4 at interval; four sample devices 1-1,1-2 ... 1-N is electric mutual inductor or is common instrument transformer and merge cells combining form, intelligent terminal 4-1,4-2 ... 4-N is responsible for the regulation and control of equipment on four intervals.Each realizes linking to each other with dsp processor by the interface of ethernet interface plug-in unit at interval.Protection observing and controlling process to a zone is: utilize electric mutual inductor interior each current and voltage signals at interval of pickup area respectively; afterwards the equal time section high frequency sampled data of gathering is sent to the protection measure and control device; dsp processor in the protection measure and control device in the CPU 5 starts each sampling routine at interval; sampling routine is by the signal sampling port 2-1 of ethernet interface plug-in unit; 2-2 ... 2-N obtains sample devices 1-1; 1-2 ... the high frequency sampled data of the equal time section that 1-N sends; FIR wave digital lowpass filter by dsp processor simulation carries out the short data window algorithm and filters out high order harmonic component composition in the primary signal; adopt zero crossing detection method and parabola interpolation algorithm to make signal be converted into equal angles section low-frequency data again; with the low-frequency data of the equal angles section that obtains through after the fast Fourier transform; calculate real time data and definite value compares; draw each protection control signal at interval; be stored in respectively in the different intermediate storage unit; then by the GOOSE agreement between protection measure and control device and the intelligent terminal; send each protection at interval successively and control signal to intelligent terminal, intelligent terminal is carried out and is operated to finish the protection to the one's respective area accordingly.
In addition, dsp processor can also and the ARM9 processor communicate, send signal or accept the signal of Surveillance center to Surveillance center by the station level communication interface.The ARM9 processor can also be with the ARM7 processor communication, realizes protection to the one's respective area by the human-computer interaction device who is connected with the ARM7 processor by the manual intervention means.
Claims (9)
1. implementation method based on the regional integrated protection observing and controlling of IEC61850 standard; above method is the digital signal to the output of the sample devices in the intelligent substation; hypervisor by CPU (5) is sampled; handle; the definite value contrast; realize the process layer primary equipment in the intelligent substation protected according to comparing result; it is characterized in that: in the protection measure and control device, set up the ethernet interface plug-in unit; the ethernet interface plug-in unit has N data sample port (2-1; 2-2 ... 2-N) with N data transmit port (3-1; 3-2 ... 3-N); N is more than or equal to 2 smaller or equal to 4 positive integer, carries out following steps on this basis:
A, in the intelligent substation system all are at interval carried out area dividing according to the structure of cable line, at interval position;
B, for any one zone, encoded in the interval in the zone, and by N data sample port (2-1,2-2 ... 2-N) with sample devices (1-1,1-2 ... 1-N) current and voltage signals of Cai Jiing deposits in the buffer according to corresponding codes;
Obtain real time data after c, CPU (5) computing, call standard value data in the permanent memory, and carry out the definite value contrast with real time data according to corresponding codes;
D, CPU (5) are passed through N data transmit port (3-1,3-2 according to the result and the corresponding codes of contrast ... 3-N) control signal is sent to intelligent terminal (4-1,4-2 on the corresponding encoded interval ... 4-N).
2. the implementation method of a kind of regional integrated protection observing and controlling based on the IEC61850 standard according to claim 1 is characterized in that: CPU (5) is as follows to the treatment step that any one goes up the current and voltage signals of gathering at interval:
1) the protection measure and control device starts the dsp processor in the CPU (5), and dsp processor is by N data sample port (2-1,2-2 ... 2-N) obtain the high frequency sampled data of the equal time section that bay device sends and the status signal of process layer equipment;
2) dsp processor obtains the equal time section high frequency sampled data of filtering high order harmonic component by the high order harmonic component part of the high frequency sampled data of wave digital lowpass filter filtering equal time section;
3) use the zero crossing detection method that the high frequency sampled data of filtering high order harmonic component is carried out frequency-tracking, and calculate the frequency departure of current cycle, utilize frequency departure to calculate the electrical network cycle in this moment again;
4) frequency of bay device is ripple 32 points weekly, with being the sampling instant of 32 equiangular sampling points behind electrical network cycles 32 branch such as grade, by supporting parabola interpolation algorithm, calculates and obtains equal angles low-frequency data at interval;
5) with the low-frequency data of the equal angles section that obtains through after the fast Fourier transform, calculate real time data, compare with standard value data in the permanent memory, draw the protection control signal;
6) dsp processor will protect control signal to be sent to intelligent terminal by the data sending terminal mouth by communication protocol, realize the protection to process layer primary equipment.
3. the implementation method of a kind of regional integrated protection observing and controlling based on the IEC61850 standard according to claim 2; it is characterized in that: described CPU also comprises the ARM9 processor in (5); the ARM9 processor is responsible for communicating by letter with station level, sends instant messages to Surveillance center and receives the instruction of Surveillance center.
4. the implementation method of a kind of regional integrated protection observing and controlling based on the IEC61850 standard according to claim 2; it is characterized in that: also comprise the ARM7 processor that is connected with the human-computer interaction device in the described CPU (5), the ARM7 processor sends to intelligent terminal with human-computer interaction device's control command.
5. the implementation method of a kind of regional integrated protection observing and controlling based on the IEC61850 standard according to claim 1 is characterized in that: described sample devices (1-1,1-2 ... sample frequency 1-N) is ripple 80 points weekly.
6. the implementation method of a kind of regional integrated protection observing and controlling based on the IEC61850 standard according to claim 2, it is characterized in that: described wave digital lowpass filter is 20 rank with the Hamming THE DESIGN OF WINDOW FUNCTION, the FIR wave digital lowpass filter that cut-off frequency is 600Hz.
7. regional integrated protection measure and control device based on the IEC61850 standard; by the implementation method described in the claim 1 process layer primary equipment protected observing and controlling; comprise in the structure and receive the data-interface that powers on the stream voltage signal and be connected at interval in the transformer station with intelligent terminal; CPU (5); and supporting power-supply circuit; it is characterized in that: comprise N data sample port (2-1 in the described data-interface; 2-2 ... 2-N) with N data transmit port (3-1; 3-2 ... 3-N); N data sample port (2-1; 2-2 ... 2-N) receive sample devices (1-1 in real time; 1-2 ... the current and voltage signals that 1-N) collects; send to CPU (5); CPU (5) is handled the back by N data transmit port (3-1; 3-2 ... 3-N) be sent to intelligent terminal (4-1; 4-2 ... 4-N); above N data sample port (2-1; 2-2 ... 2-N) with N data transmit port (3-1; 3-2 ... 3-N) be positioned in the circuit board; anabolic process layer ethernet interface plug-in unit, N are smaller or equal to 4 positive integer more than or equal to 2.
8. a kind of regional integrated protection measure and control device according to claim 7 based on the IEC61850 standard; it is characterized in that: described CPU (5) comprises three processor structures of being made up of ARM7 processor, ARM9 processor, dsp processor and supporting communication bus; dsp processor is with communicating by letter between control and interrupt signal control and the process layer ethernet interface plug-in unit; the ARM7 processor is connected with the human-computer interaction device, and the ARM9 processor is connected with Surveillance center by the station level communication interface.
9. a kind of regional integrated protection measure and control device according to claim 8 based on the IEC61850 standard; it is characterized in that: the chip model of described dsp processor is TMS320F2812; the chip model of ARM7 processor is LPC2138, and the chip model of ARM9 processor is GWIXP425BDT.
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| CN102332751A (en) * | 2011-07-13 | 2012-01-25 | 国电南京自动化股份有限公司 | Measurement and control device connected with double sets of process layer devices in intelligent substation and measurement and control method thereof |
| CN102761106A (en) * | 2012-07-10 | 2012-10-31 | 清华大学 | Quick starting and vector calculation method for intelligent substation integrated protection |
| WO2015070707A1 (en) * | 2013-11-13 | 2015-05-21 | 国家电网公司 | Method for acquiring universal data of intelligent substation |
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