CN102122815A - Ultra high-speed traveling wave direction pilot protection method, device and system for high voltage transmission line - Google Patents

Ultra high-speed traveling wave direction pilot protection method, device and system for high voltage transmission line Download PDF

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CN102122815A
CN102122815A CN2011100475825A CN201110047582A CN102122815A CN 102122815 A CN102122815 A CN 102122815A CN 2011100475825 A CN2011100475825 A CN 2011100475825A CN 201110047582 A CN201110047582 A CN 201110047582A CN 102122815 A CN102122815 A CN 102122815A
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fault
module
wave
transmission line
ultra
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CN102122815B (en
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董新洲
施慎行
王世勇
崔柳
王珺
王飞
姜博
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Tsinghua University
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Tsinghua University
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Abstract

The invention provides a traveling wave direction pilot protection method, which comprises the following steps of: respectively acquiring a wave head polarity of a current fault initial traveling wave and an initial polarity of a power frequency component in a voltage fault traveling wave at the first side of the high voltage transmission line, and respectively acquiring a wave head polarity of a current fault initial traveling wave and an initial polarity of a power frequency component in a voltage fault traveling wave at a second side of the high voltage transmission line; comparing a wave head polarity of a current fault initial traveling wave with an initial polarity of a power frequency component in a voltage fault traveling wave at a local side so as to determine a fault direction at the local side; and exchanging information of a fault direction at the first side with information of a fault direction at the second side, comparing the information of the fault directions between the two sides, judging whether the high voltage transmission line has an internal fault and determining whether to carry out the operation of relay protection. The invention also provides a traveling wave direction pilot protection device and a traveling wave direction pilot protection system, which can be applied to the high voltage transmission line and can rapidly and accurately detect the fault and the type of the fault and carry out protection operation.

Description

Ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method, device and system
Technical field
The present invention relates to field of power, in particular to ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method, device and system.
Background technology
The influence of factors such as traditional relaying protection based on the power frequency electric parameters is subjected to that ultra-high-tension power transmission line capacitance current, current transformer are saturated, power system oscillation and transition resistance; the accurate fault on the detection line, and responsiveness is generally about 20ms.
Comprised the foundation that the fault message that enriches can be used as fault detect in capable ripple of current failure after the ultra-high-tension power transmission line fault and the capable ripple of voltage failure.And capable ripple of the voltage failure after the fault and current failure travelling wave signal are signals that spectral range is very wide, and current transformer has good broadband progress of disease characteristic, the effective capable ripple of progress of disease current failure, and be successfully applied to the electric power system travelling wave ranging.And the effective capable ripple of the wide band voltage failure of the progress of disease of the capacitance type potential transformer that in the ultra-high/extra-high voltage electric power system, generally uses, this is one of major reason that does not also have at present traveling-wave protection device input electric power system practical application.Though the capacitance type potential transformer that generally uses in the ultra-high/extra-high voltage electric power system is the capable ripple of the wide band voltage failure of the progress of disease effectively; but its can effectively progress of disease power frequency near the voltage failure travelling wave signal of a bit of frequency band, and the application that utilizes the relaying protection of power frequency fault component principle to succeed in electric power system.Therefore, traveling-wave protection be not subjected to that ultra-high-tension power transmission line capacitance current, current transformer are saturated, the influence of factor such as power system oscillation and transition resistance.Simultaneously because traveling-wave protection data sampling rate height; be generally the hundreds of thousands hertz; data acquisition amount and data processing amount are all very big; and the rate request that protective device is handled data is very high; so traveling-wave protection is also had higher requirement to the hardware platform of protection, traditional needs that can not satisfy traveling-wave protection based on the relaying protection hardware platform of power frequency electric parameters.
Therefore, need a kind of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot resist technology, realize the accurate detection and the protection of ultra-high-tension power transmission line fault, for the realization of traveling-wave protection hardware platform provides hardware foundation.
Summary of the invention
In view of this; technical problem to be solved by this invention is; the system that a kind of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method, ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device is provided and has this ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device; detect the fault and the fault type of ultra-high-tension power transmission line accurately and quickly, and in time make corresponding protection action.
The invention provides a kind of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method, comprise: step 102, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of first side of ultra-high-tension power transmission line and the capable ripple of voltage failure respectively, and the initial polarity that obtains power frequency component in the wave head polarity of current failure initial row ripple of second side of ultra-high-tension power transmission line and the capable ripple of voltage failure respectively; Step 104, the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of first side and the capable ripple of voltage failure is compared, to determine the fault direction on first side, and the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of second side and the capable ripple of voltage failure compared, to determine the fault direction on second side; And step 106; exchange the information of the fault direction of the information of fault direction of first side and second side; when the fault direction on the fault direction on first side and second side is the forward fault; determine ultra-high-tension power transmission line generation internal fault; make relaying protection outlet action; when in the fault direction on the fault direction on first side and second side any one is reverse fault, determine that then internal fault does not take place ultra-high-tension power transmission line, the relaying protection outlet is failure to actuate.
In technique scheme, preferably, step 102 can comprise: step 1022, the voltage traveling wave and the current traveling wave of first side after the collection ultra-high-tension power transmission line fault, the voltage traveling wave and the current traveling wave of second side after the collection ultra-high-tension power transmission line fault; Step 1024, current traveling wave and voltage traveling wave to first side that collects carry out current traveling wave modulus and the voltage traveling wave modulus that phase-model transformation obtains first side respectively, and the current traveling wave and the voltage traveling wave of second side that collects carried out current traveling wave modulus and the voltage traveling wave modulus that phase-model transformation obtains second side respectively; Step 1026, current traveling wave modulus to first side is carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of first side, and obtain the electric current wavelet transformation modulus maximum and the modulus maximum polarity of first side according to the electric current wavelet conversion coefficient of first side, and then the wave head polarity of the current failure initial row ripple of definite first side, and the current traveling wave modulus of second side carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of second side, and obtain the electric current wavelet transformation modulus maximum and the modulus maximum polarity of second side, and then determine the wave head polarity of the current failure initial row ripple of second side according to the electric current wavelet conversion coefficient of described second side; And step 1028, from the voltage traveling wave modulus of first side, extract the voltage failure traveling-wave component, the capable ripple of voltage failure is carried out wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of first side, and the voltage failure capable ripple wavelet transformation modulus maximum and the modulus maximum polarity that obtain first side according to the capable ripple wavelet conversion coefficient of voltage failure of first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of first side, and from the voltage traveling wave modulus of second side, extract the voltage failure traveling-wave component, the capable ripple of voltage failure is carried out wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of second side, and the voltage failure capable ripple wavelet transformation modulus maximum and the modulus maximum polarity that obtain second side according to the capable ripple wavelet conversion coefficient of voltage failure of first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of second side.
In technique scheme, preferably, the judgment basis of fault direction is in step 104: if the initial polarity of power frequency component is opposite with the wave head polarity of current failure initial row ripple in the capable ripple of voltage failure, then fault direction is the forward fault; If the initial polarity of the capable ripple power frequency component of voltage failure is identical with the wave head polarity of current failure initial row ripple, then fault direction is a reverse fault.
In technique scheme, preferably, in step 106, the mode by the Ethernet optical fiber communication exchanges the information of the fault direction of the information of fault direction of first side and second side.
The present invention also provides a kind of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, be installed in a side of ultra-high-tension power transmission line, can comprise: converter, traveling-wave protection device, watch-dog and exit relay, wherein, converter, be connected to the traveling-wave protection device, will be transformed to second voltage and current that uses into for the traveling-wave protection plate respectively from first voltage and current of ultra-high-tension power transmission line; The traveling-wave protection device, be connected to watch-dog, reception is from second voltage and current of described converter, described second voltage and current is handled to determine the fault message of ultra-high-tension power transmission line, send fault message to watch-dog, outwards send fault message and reception other fault messages from the outside, the fault message that the traveling-wave protection device is determined and compare from other fault messages of outside, and judge whether to trip and to trip separate according to comparative result, fault message comprises that fault direction and fault are separate; Watch-dog is connected to the traveling-wave protection device, and the fault message that demonstration and storage line ripple protector transmit is monitored the traveling-wave protection device according to the presupposed information of input, and fault message is sent to the outside; And exit relay, the result of determination of reception traveling-wave protection device determines whether to send trip signal according to result of determination.
In technique scheme, preferably, watch-dog can comprise: microprocessor, be connected to a CAN communication module, reception is from the fault message of traveling-wave protection device with from the input information of Keysheet module, the input information of Keysheet module is transferred to the traveling-wave protection device, the displaying contents of control LCD MODULE; The one CAN communication module is connected to microprocessor, realizes the information interaction with the traveling-wave protection device; The ethernet communication module receives the fault message from the traveling-wave protection device, and fault message is transferred to the outside; Serial port module is connected to microprocessor, transmitting and displaying content and debug signal; LCD MODULE is connected to microprocessor, shows from the displaying contents of microprocessor and the information of importing by Keysheet module; Keysheet module, the information that input is outside; The one FLASH memory is used for the control program and the fault message of storage microprocessor; And a SDAM memory, be used for the intermediate data that storage microprocessor is handled; Wherein, microprocessor can also comprise: polling module, be connected to a CAN communication module, and regularly patrol and examine the traveling-wave protection device by a CAN communication module, when patrolling and examining abnormal state, send warning information; Last transmission module is connected to a CAN communication module, by the fault message of CAN communication module reception from the traveling-wave protection device, and is kept in the FLASH memory; Following transmission module is connected to a CAN communication module, sends the protection definite value that the user resets to the traveling-wave protection device by a CAN communication module.
In technique scheme, preferably, the traveling-wave protection device can comprise: row wave datum acquisition module, row wave datum processing module and information input/output module, wherein, row wave datum acquisition module, comprise: kernel control module, second order active low-pass filter module, the passive bandpass filtering modules block of second order, protect hardware-initiated module, the multicircuit switch module, the A/D modular converter, the dual port RAM module, second order active low-pass filter module wherein, reception is from the capable mode analog signal of ultra-high-tension power transmission line, row mode analog signal is carried out filtering, and row mode analog signal comprises voltage traveling wave analog signal and current traveling wave analog signal; The passive bandpass filtering modules block of second order is connected to second order active low-pass filter module, is used for extracting high-frequency signal the row ripple from the signal of the output of second order active low-pass filter module; Protect hardware-initiated module, receive high-frequency signal, and whether definite high-frequency signal satisfy predetermined condition, after high-frequency signal satisfies predetermined condition, send enabling signal to kernel control module from the passive bandpass filtering modules block of second order; The multicircuit switch module is connected to second order active low-pass filter module, is used for will going the mode analog signal and exports the A/D modular converter successively to after receiving from the control signal of kernel control module; The A/D modular converter is connected to the multicircuit switch module, according to the control signal from kernel control module, row mode analog signal is carried out the A/D conversion, and export transformation result to the dual port RAM module; The dual port RAM module has two groups of data/address buss and two group address buses, is used for storing under the control of kernel control module the transformation result from the A/D modular converter, and is read transformation result by row wave datum processing module; And kernel control module, receive the enabling signal of the hardware-initiated module of self-shield, control multicircuit switch, A/D converter and dual port RAM, and realize decoding, and send interrupt signal to row wave datum processing module to address bus and data/address bus; Row wave datum processing module receives the interrupt signal from kernel control module, reads transformation result from dual port RAM, and transformation result is handled to obtain fault message, and wherein, fault message comprises that the fault direction of ultra-high-tension power transmission line, fault are separate; The information input/output module, comprise: message processing module, ethernet control module, switching input module, switching value output module, wherein, message processing module, receive the fault message of wave datum processing module voluntarily, by ethernet control module reception other fault messages from the opposite side of ultra-high-tension power transmission line, and receive switching value information from switching input module, according to the fault message that comes wave datum processing module voluntarily, determine whether tripping operation and trip separate from other fault messages and the switching value information of opposite side; Ethernet control module, the fault message of self information processing module in the future, send to the capable ripple high-frequency orientation protector of ultra-high-tension power transmission line opposite side, and receive other fault messages that send from the capable ripple high-frequency orientation protector of opposite side, other fault messages are sent to message processing module; Switching input module, the switching value information that the traveling-wave protection device is used inputs to message processing module; And the switching value output module, receive from the order of tripping of message processing module and trip separate and send to exit relay; The 2nd CAN communication module, the Trouble Report information that receives from message processing module sends to watch-dog; And 232 communication modules, receive the debug signal that the traveling-wave protection device is debugged from watch-dog.
In technique scheme, preferably, row wave datum processing module comprises: phase-model transformation module, wavelet transformation module, fault initiating discrimination module, traveling wave fault select phase module, the capable ripple directional relay of polarity comparison expression module, wherein the phase-model transformation module obtains modulus row wave datum to carrying out triumphant human relations Bel conversion from the transformation result of dual port RAM; The wavelet transformation module, reception is from the modulus row wave datum of phase-model transformation module, and modulus row wave datum carried out the polarity that wavelet transformation obtains the modulus maximum and the modulus maximum of wavelet transformation, and obtain the wave head polarity of fault initial row ripple according to the polarity of modulus maximum; The fault initiating discrimination module, reception is from the modulus maximum of wavelet transformation module, determine whether to cause protecting the startup of hardware-initiated module for line fault according to Lipschitz singularity of signal etection theory, and only when being defined as line fault and causing protecting the startup of hardware-initiated module, row ripple directional relay module when starting traveling wave fault and selecting phase module and polarity relatively; Traveling wave fault selects phase module, receives the modulus maximum from the wavelet transformation module, and confirms that according to modulus maximum the fault type and the fault of circuit are separate; The capable ripple directional relay of polarity comparison expression module, reception is from the wave head polarity of the fault initial row ripple of wavelet transformation module, and confirm the fault direction of circuit, and confirm whether send fault direction and fault is separate to the information input/output module according to the fault direction on the circuit according to the wave head polarity of fault initial row ripple.
In technique scheme, preferably, row wave datum processing module can also comprise: the 2nd SDRAM memory is used for storage line wave datum processing module and handles required data; The 2nd FLASH memory is used for the algorithm routine that storage line wave datum processing module is adopted; And the SPI communication control module, make capable wave datum processing module and information input/output module carry out the SPI communication, fault message is sent to the information input/output module.
The present invention also provides a kind of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system, first side at ultra-high-tension power transmission line is provided with as the first above ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, first voltage transformer, first current transformer, first circuit breaker and the first ethernet communication device, and be provided with as the second above ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device in second side of ultra-high-tension power transmission line, second voltage transformer, second current transformer, second circuit breaker and the second ethernet communication device, wherein, first voltage transformer and second voltage transformer, with the voltage transitions on the ultra-high-tension power transmission line for providing respectively to the voltage of the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device and the second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device; First current transformer and second current transformer, with the current conversion on the ultra-high-tension power transmission line for providing respectively to the electric current of the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device and the second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device; The first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, from voltage and current, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of first side of described ultra-high-tension power transmission line and the capable ripple of voltage failure respectively from first voltage transformer and first current transformer, and determine the fault direction of ultra-high-tension power transmission line first side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of first side and the capable ripple of voltage failure, and by the ethernet communication device, reception is from other fault messages of the second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device of second side, determine that according to other fault messages of the fault message of first side and second side the fault type of ultra-high-tension power transmission line and fault are separate, and determine whether to send trip signal to first exit relay; The second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, from voltage and current, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of second side of ultra-high-tension power transmission line and the capable ripple of voltage failure respectively from second voltage transformer and second current transformer, and determine the fault direction of ultra-high-tension power transmission line second side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of second side and the capable ripple of voltage failure, and by the ethernet communication device, reception is from other fault messages of the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device of first side, determine that according to other fault messages of the fault message of second side and first side the fault type of ultra-high-tension power transmission line and fault are separate, and determine whether to send trip signal to second exit relay; The first ethernet communication device sends the fault message of ultra-high-tension power transmission line first side second ethernet communication device of second side of ultra-high-tension power transmission line to by optical fiber communication network, realizes fault message mutual at ultra-high-tension power transmission line two ends; The second ethernet communication device sends the fault message of ultra-high-tension power transmission line second side to by optical fiber communication network the first ethernet communication device of ultra-high-tension power transmission line first side; First circuit breaker is installed on the ultra-high-tension power transmission line, receives the trip signal from the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, disconnects or the closed high transmission line; And second circuit breaker, be installed on the ultra-high-tension power transmission line, receive trip signal from the second row ripple high-frequency orientation protector, disconnect or the closed high transmission line.
Description of drawings
Fig. 1 shows the flow chart of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method according to an embodiment of the invention;
Fig. 2 shows the block diagram of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device according to an embodiment of the invention;
Fig. 3 shows the block diagram of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system according to an embodiment of the invention;
Fig. 4 shows the schematic diagram of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system according to an embodiment of the invention;
Fig. 5 shows ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device structural representation according to an embodiment of the invention;
Fig. 6 shows the structural representation of traveling-wave protection device according to an embodiment of the invention;
Fig. 7 shows the program execution flow figure of digital processing chip TMS320C6713 according to an embodiment of the invention;
Fig. 8 shows the multiresolution decomposing schematic representation of wavelet transformation according to an embodiment of the invention;
Fig. 9 shows the program flow diagram that traveling wave fault according to an embodiment of the invention selects phase module;
Figure 10 a and Figure 10 b show the schematic diagram of polarization current fault traveling wave directional relay according to an embodiment of the invention;
Figure 11 shows according to an embodiment of the invention microprocessor MCF5282 program flow diagram in the traveling-wave protection device;
Figure 12 shows monitor board hardware structure diagram according to an embodiment of the invention;
Figure 13 shows the block diagram of monitor board built-in system software design according to an embodiment of the invention;
Figure 14 a shows the schematic diagram of Ethernet Fiber Optical Communication System according to an embodiment of the invention; And
Figure 14 b shows the schematic diagram of Ethernet Fiber Optical Communication System according to an embodiment of the invention.
Embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the drawings and specific embodiments.
Set forth a lot of details in the following description so that fully understand the present invention, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, the present invention is not limited to the restriction of following public specific embodiment.
Fig. 1 shows the flow chart of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method according to an embodiment of the invention.
As shown in Figure 1, ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method comprises according to an embodiment of the invention: step 102, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of first side of ultra-high-tension power transmission line and the capable ripple of voltage failure respectively, and the initial polarity that obtains power frequency component in the wave head polarity of current failure initial row ripple of second side of ultra-high-tension power transmission line and the capable ripple of voltage failure respectively; Step 104, the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of first side and the capable ripple of voltage failure is compared, to determine the fault direction on first side, and the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of second side and the capable ripple of voltage failure compared, to determine the fault direction on second side; And step 106; exchange the information of the fault direction of the information of fault direction of first side and second side; when the fault direction on the fault direction on first side and second side is the forward fault; determine ultra-high-tension power transmission line generation internal fault; make relaying protection outlet action; when in the fault direction on the fault direction on first side and second side any one is reverse fault, determine that then internal fault does not take place ultra-high-tension power transmission line, the relaying protection outlet is failure to actuate.
In technique scheme, preferably, step 102 can comprise: step 1022, the voltage traveling wave and the current traveling wave of first side after the collection ultra-high-tension power transmission line fault, the voltage traveling wave and the current traveling wave of second side after the collection ultra-high-tension power transmission line fault; Step 1024, current traveling wave and voltage traveling wave to first side that collects carry out current traveling wave modulus and the voltage traveling wave modulus that phase-model transformation obtains first side respectively, and the current traveling wave and the voltage traveling wave of second side that collects carried out current traveling wave modulus and the voltage traveling wave modulus that phase-model transformation obtains second side respectively; Step 1026, current traveling wave modulus to first side is carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of first side, and obtain the electric current wavelet transformation modulus maximum and the modulus maximum polarity of first side according to the electric current wavelet conversion coefficient of first side, and then the wave head polarity of the current failure initial row ripple of definite first side, and the current traveling wave modulus of second side carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of second side, and obtain the electric current wavelet transformation modulus maximum and the modulus maximum polarity of second side, and then determine the wave head polarity of the current failure initial row ripple of second side according to the electric current wavelet conversion coefficient of described second side; And step 1028, from the voltage traveling wave modulus of first side, extract the voltage failure traveling-wave component, the capable ripple of voltage failure is carried out wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of first side, and the voltage failure capable ripple wavelet transformation modulus maximum and the modulus maximum polarity that obtain first side according to the capable ripple wavelet conversion coefficient of voltage failure of first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of first side, and from the voltage traveling wave modulus of second side, extract the voltage failure traveling-wave component, the capable ripple of voltage failure is carried out wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of second side, and the voltage failure capable ripple wavelet transformation modulus maximum and the modulus maximum polarity that obtain second side according to the capable ripple wavelet conversion coefficient of voltage failure of first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of second side.
In technique scheme, preferably, the judgment basis of fault direction is in step 104: if the initial polarity of power frequency component is opposite with the wave head polarity of current failure initial row ripple in the capable ripple of voltage failure, then fault direction is the forward fault; If the initial polarity of the capable ripple power frequency component of voltage failure is identical with the wave head polarity of current failure initial row ripple, then fault direction is a reverse fault.
In technique scheme, preferably, in step 106, the mode by the Ethernet optical fiber communication exchanges the information of the fault direction of the information of fault direction of first side and second side.
Fig. 2 shows the block diagram of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device according to an embodiment of the invention.
As shown in Figure 2, ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 200 according to an embodiment of the invention, be installed in a side of ultra-high-tension power transmission line, can comprise: converter 202, traveling-wave protection device 204, watch-dog 206 and exit relay 208, wherein, converter 202 is connected to traveling-wave protection device 204, will be transformed to second voltage and current that uses into for the traveling-wave protection plate from first voltage and current of ultra-high-tension power transmission line respectively; Traveling-wave protection device 204, be connected to watch-dog 206, reception is from second voltage and current of described converter 202, described second voltage and current is handled to determine the fault message of ultra-high-tension power transmission line, send fault message to watch-dog 206, outwards send fault message and reception other fault messages from the outside, the fault message that traveling-wave protection device 204 is determined and compare from other fault messages of outside, and judge whether to trip and to trip separate according to comparative result, fault message comprises that fault direction and fault are separate; Watch-dog 206 is connected to traveling-wave protection device 204, and the fault message that demonstration and storage line ripple protector 204 transmit is monitored traveling-wave protection device 204 according to the presupposed information of input, and fault message is sent to the outside; And traveling-wave protection device 208, the result of determination of reception traveling-wave protection device 204 determines whether to send trip signal according to result of determination.
In technique scheme, preferably, watch-dog 206 can comprise: microprocessor 2062, be connected to a CAN communication module 2064, reception is from the fault message of traveling-wave protection device 204 with from the input information of Keysheet module, the input information of Keysheet module is transferred to traveling-wave protection device 204, the displaying contents of control LCD MODULE; The one CAN communication module 2064 is connected to microprocessor 2062, realizes the information interaction with traveling-wave protection device 204; Ethernet communication module 2066 receives the fault message from traveling-wave protection device 204, and fault message is transferred to the outside; Serial port module is connected to microprocessor 2062, transmitting and displaying content and debug signal; LCD MODULE 2068 is connected to microprocessor 2062, shows from the displaying contents of microprocessor 2062 and the information of importing by Keysheet module; Keysheet module 20610, the information that input is outside; The one FLASH memory 20612 is used for the control program and the fault message of storage microprocessor 2062; And a SDAM memory 20614, be used for the intermediate data that storage microprocessor 2062 is handled; Wherein, microprocessor 2062 can also comprise: polling module, be connected to a CAN communication module 2064, and regularly patrol and examine traveling-wave protection device 204 by a CAN communication module 2064, when patrolling and examining abnormal state, send warning information; Last transmission module is connected to a CAN communication module 2064, by the fault message of a CAN communication module 2064 receptions from traveling-wave protection device 204, and is kept in the FLASH memory; Following transmission module is connected to a CAN communication module 2064, sends the protection definite value that the user resets to traveling-wave protection device 204 by a CAN communication module 2064.
In technique scheme, preferably, traveling-wave protection device 204 can comprise: row wave datum acquisition module 2042, row wave datum processing module 2044 and information input/output module 2046, wherein, row wave datum acquisition module 2042 can comprise: kernel control module, second order active low-pass filter module, the passive bandpass filtering modules block of second order, protect hardware-initiated module, the multicircuit switch module, the A/D modular converter, the dual port RAM module, second order active low-pass filter module wherein, reception is from the capable mode analog signal of ultra-high-tension power transmission line, row mode analog signal is carried out filtering, and row mode analog signal comprises voltage traveling wave analog signal and current traveling wave analog signal; The passive bandpass filtering modules block of second order is connected to second order active low-pass filter module, is used for extracting high-frequency signal the row ripple from the signal of the output of second order active low-pass filter module; Protect hardware-initiated module, receive high-frequency signal, and whether definite high-frequency signal satisfy predetermined condition, after high-frequency signal satisfies predetermined condition, send enabling signal to kernel control module from the passive bandpass filtering modules block of second order; The multicircuit switch module is connected to second order active low-pass filter module, is used for will going the mode analog signal and exports the A/D modular converter successively to after receiving from the control signal of kernel control module; The A/D modular converter is connected to the multicircuit switch module, according to the control signal from kernel control module, row mode analog signal is carried out the A/D conversion, and export transformation result to the dual port RAM module; The dual port RAM module has two groups of data/address buss and two group address buses, is used for storing under the control of kernel control module the transformation result from the A/D modular converter, and is read transformation result by row wave datum processing module 2044; And kernel control module, receive the enabling signal of the hardware-initiated module of self-shield, control multicircuit switch, A/D converter and dual port RAM, and realize decoding, and send interrupt signals to row wave datum processing module 2044 to address bus and data/address bus; Row wave datum processing module 2044 receives the interrupt signal from kernel control module, reads transformation result from dual port RAM, and transformation result is handled to obtain fault message, and wherein, fault message comprises that the fault direction of ultra-high-tension power transmission line, fault are separate; Information input/output module 2046, can comprise: message processing module, ethernet control module, switching input module, the switching value output module, wherein, message processing module, receive the fault message of wave datum processing module 2044 voluntarily, by ethernet control module 2 receptions other fault messages from the opposite side of ultra-high-tension power transmission line, and reception is from the switching value information of switching input module, according to coming the fault message of wave datum processing module 2044 voluntarily, other fault messages and switching value information from opposite side determine whether tripping operation and trip separate; Ethernet control module, the fault message of self information processing module in the future, send to the capable ripple high-frequency orientation protector of ultra-high-tension power transmission line opposite side, and receive other fault messages that send from the capable ripple high-frequency orientation protector of opposite side, other fault messages are sent to message processing module; Switching input module, the switching value information that the traveling-wave protection device is used inputs to message processing module; And the switching value output module, receive from the order of tripping of message processing module and trip separate and send to traveling-wave protection device 208; The 2nd CAN communication module, the Trouble Report information that receives from message processing module sends to watch-dog 206; And 232 communication modules, receive the debug signal that traveling-wave protection device 204 is debugged from watch-dog 206.
In technique scheme, preferably, row wave datum processing module 2044 comprises: phase-model transformation module, wavelet transformation module, fault initiating discrimination module, traveling wave fault select phase module, the capable ripple directional relay of polarity comparison expression module, wherein the phase-model transformation module obtains modulus row wave datum to carrying out triumphant human relations Bel conversion from the transformation result of dual port RAM; The wavelet transformation module, reception is from the modulus row wave datum of phase-model transformation module, and modulus row wave datum carried out the polarity that wavelet transformation obtains the modulus maximum and the modulus maximum of wavelet transformation, and obtain the wave head polarity of fault initial row ripple according to the polarity of modulus maximum; The fault initiating discrimination module, reception is from the modulus maximum of wavelet transformation module, determine whether to cause protecting the startup of hardware-initiated module for line fault according to Lipschitz singularity of signal etection theory, and only when being defined as line fault and causing protecting the startup of hardware-initiated module, row ripple directional relay module when starting traveling wave fault and selecting phase module and polarity relatively; Traveling wave fault selects phase module, receives the modulus maximum from the wavelet transformation module, and confirms that according to modulus maximum the fault type and the fault of circuit are separate; The capable ripple directional relay of polarity comparison expression module, reception is from the wave head polarity of the fault initial row ripple of wavelet transformation module, and confirm the fault direction of circuit, and confirm whether send fault direction and fault is separate to information input/output module 2046 according to the fault direction on the circuit according to the wave head polarity of fault initial row ripple.
In technique scheme, preferably, row wave datum processing module 2044 can also comprise: the 2nd SDRAM memory is used for storage line wave datum processing module 2044 and handles required data; The 2nd FLASH memory is used for the algorithm routine that storage line wave datum processing module 2044 is adopted; And the SPI communication control module, make capable wave datum processing module 2044 carry out the SPI communication with information input/output module 2046, fault message is sent to information input/output module 2046.
Fig. 3 shows the block diagram of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system according to an embodiment of the invention.
As shown in Figure 3, ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system 300 according to an embodiment of the invention, first side at ultra-high-tension power transmission line is provided with the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 302a as shown in Figure 2, the first voltage transformer 304a, the first current transformer 306a, the first circuit breaker 308a and the first ethernet communication device 310a, and be provided with the second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 302b as shown in Figure 2 in second side of ultra-high-tension power transmission line, the second voltage transformer 304b, the second current transformer 306b, the second circuit breaker 308b and the second ethernet communication device 310b, wherein, the first voltage transformer 304a and the second voltage transformer 304b, with the voltage transitions on the ultra-high-tension power transmission line for providing respectively to the voltage of the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 302a and the second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 302b; The first current transformer 306a and the second current transformer 306b, with the current conversion on the ultra-high-tension power transmission line for providing respectively to the electric current of the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 302a and the second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 302b; The first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device 302a, from voltage and current, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of first side of described ultra-high-tension power transmission line and the capable ripple of voltage failure respectively from the first voltage transformer 304a and the first current transformer 306a, and determine the fault direction of ultra-high-tension power transmission line first side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of first side and the capable ripple of voltage failure, and by the ethernet communication device, reception is from other fault messages of the second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device of second side, determine that according to other fault messages of the fault message of first side and second side the fault type of ultra-high-tension power transmission line and fault are separate, and determine whether to send trip signal to first exit relay; The second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, from voltage and current, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of second side of ultra-high-tension power transmission line and the capable ripple of voltage failure respectively from the second voltage transformer 304b and the second current transformer 306b, and determine the fault direction of ultra-high-tension power transmission line second side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of second side and the capable ripple of voltage failure, and by the ethernet communication device, reception is from other fault messages of the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device of first side, determine that according to other fault messages of the fault message of second side and first side the fault type of ultra-high-tension power transmission line and fault are separate, and determine whether to send trip signal to second exit relay; The first ethernet communication device 310a sends the fault message of ultra-high-tension power transmission line first side second ethernet communication device 310b of second side of ultra-high-tension power transmission line to by optical fiber communication network, realizes fault message mutual at ultra-high-tension power transmission line two ends; The second ethernet communication device 310b sends the fault message of ultra-high-tension power transmission line second side to by optical fiber communication network the first ethernet communication device 310a of ultra-high-tension power transmission line first side; The first circuit breaker 308a is installed on the ultra-high-tension power transmission line, receives the trip signal from the first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, disconnects or the closed high transmission line; And the second circuit breaker 308b, be installed on the ultra-high-tension power transmission line, receive trip signal from the second row ripple high-frequency orientation protector, disconnect or the closed high transmission line.
Fig. 4 shows the schematic diagram of ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection protection system according to an embodiment of the invention.
As shown in Figure 4; the ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection protection system of embodiments of the invention can be applicable to can comprise: transmission line 1 in the typical 750kV transmission line; current transformer 2 and 10; capacitance type potential transformer 3 and 11; equivalence electric power system 4 and 12; bus 5 and 13; ultrahigh speed row ripple high- frequency orientation protector 6 and 14 is a ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device shown in Figure 2; multiplex interface device 7 and 15; SDH/PDH optical transmission device 8 and 16; SDH/PDH optical fiber communication network 9 and circuit breaker 17 and 18.
The effect of each components and parts in the ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection protection system shown in Figure 4 is respectively described below:
(1) transmission line 1 is protected transmission line.
(2) current transformer 2 and 10 is used for the big current transformation on the ultra-high-tension power transmission line is become for example 1 ampere in little electric current.
(3) capacitance type potential transformer 3 and 11 is used for the high-voltage variable on the ultra-high-tension power transmission line is changed into for example 57.7 volts of low-voltages.
(4) equivalent electric power system 4 and 12, expression is connected to the electric power system at these ultra-high-tension power transmission line two ends.
(5) bus 5 and 13 is represented the bus of this ultra-high-tension power transmission line two ends transformer station.
(6) circuit breaker 17 and 18 is used for this ultra-high-tension power transmission line of closed and disconnected.
(7) SDH/PDH optical transmission device 8 and 16 is used to convert the electrical signal to light signal, and transfers to the SDH/PDH optical fiber communication network.
(8) the SDH/PDH optical fiber communication network 9, are used for transmitting the information of each node of SDH/PDH fiber optic network.
In this ultra-high-tension power transmission line, be arranged on two ultrahigh speed row ripple high-frequency orientation protectors (as 6 and 14) at protected transmission line 1 two ends and the pith that Ethernet Fiber Optical Communication System (as 7,8 and 16,15,9) has constituted this ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system, wherein ultrahigh speed row ripple high-frequency orientation protector is used to realize relaying protection; And the Ethernet Fiber Optical Communication System is used to exchange the fault message of two protective devices.The structure and the detailed functions of this two important part are respectively described below:
1, is applied to ultrahigh speed row ripple high-frequency orientation protector in this ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection protection system; it forms structure can be as shown in Figure 5; it can comprise power panel 21, precision current converter and accurate voltage converter plate 22; ultrahigh speed traveling-wave protection plate 23, monitor board 24, exit relay plate 25; these device boards are connected on the motherboard 20 side by side and are fixed in the cabinet 19, also have LCDs 191 and operation push-button 192 on the front panel of the outer surface of cabinet.
Each device model and function declaration in this ultrahigh speed row ripple high-frequency orientation protector are as follows:
(1) cabinet 19: install and fix each feature board, and have shielding external electromagnetic interference function.
LCDs 191: fault messages such as line information when being used to show normal operation the and the Trouble Report after the fault, failure wave-recording.Liquid crystal display screen adopts colored 3.5 cun TFT liquid crystal display screens, and the resolution of display screen is 320 * 240.
Operation push-button 192: be used to be provided with the protection definite value, show fault messages such as Trouble Report, failure wave-recording, realize the associative operation of man-machine interaction.Operation push-button adopts 3 * 4 matrix keyboards, realizes the operation of user to ultrahigh speed row ripple high-frequency orientation protector.
(2) motherboard 20: be used to transmit the interactive signal between each feature board.
(3) power panel 21: provide DC power supply to each feature board, 5 volts of digital powers and digitally can be provided, positive and negative 5 volts, positive and negative 12 volts of analog powers, positive 24 volts and simulation ground.Power is 500 watts.
(4) precision current converter and accurate voltage converter plate 22: by 4 models be UCT-01-5A/3.53mA precision current converter, 4 accurate voltage converters that model is TV3154-100V/3.53V.The effect of this feature board is that 1 Ampere currents of 57.7 volts of voltage summation current transformer secondary sides of capacitance type potential transformer secondary side is transformed into positive and negative 2.5 volts of weak electric signals, uses for ultrahigh speed traveling-wave protection plate.
(5) ultrahigh speed traveling-wave protection plate 23: the effect of this feature board is current traveling wave signal and the voltage traveling wave signal after the collection fault, and the current traveling wave signal that collects is selected mutually and the processing of polarization current fault traveling wave direction protection relay algorithm with multiresolution decomposition algorithm, the software differentiation of fault initiating, the traveling wave fault that the voltage traveling wave signal carries out phase-model transformation, wavelet transformation respectively.The fault direction information of this side that sends ultra-high-tension power transmission line simultaneously is to the ultrahigh speed row ripple high-frequency orientation protector of the offside of ultra-high-tension power transmission line; receive the fault direction information of the ultrahigh speed row ripple high-frequency orientation protector of offside; and open into amount information reception this locality; the vertical connection of the every trade of going forward side by side ripple direction protection logic determines is sent functions such as the amount of leaving information according to judged result.
And the hardware of ultrahigh speed traveling-wave protection plate formation can be as shown in Figure 6, and it is made up of High Speed Data Acquisition Circuit 602, high-speed digital signal treatment circuit 604 and protection logic determines and input/output interface circuit 606 3 parts.
The composition and the function declaration of this three part are as follows:
One, High Speed Data Acquisition Circuit 602:
High Speed Data Acquisition Circuit 602 can comprise second order active low-pass filter module 6022, the passive bandpass filtering modules block 6024 of second order, the hardware-initiated module 6026 of protection, multicircuit switch module 6028, A/D modular converter 60210, dual port RAM module 60212, complex programmable device (CPLD) EMP7128S control and decoding module 60214.Wherein:
1) second order active low-pass filter module 6022:
8 tunnel analog signals enter second order active low-pass filter module 6022 after the motherboard terminal inputs to ultrahigh speed traveling-wave protection plate 23, the cut-off frequency of this second order active low-pass filter module 6022 is 250kHz, satisfy Shannon's sampling theorem and filtering High-frequency Interference.
2) the passive bandpass filtering modules block 6024 of second order:
The logical frequency of the band of the passive bandpass filtering modules block 6024 of second order is 3kHz～30kHz, extracts the high-frequency signal in the capable ripple of current failure, as the enabling signal of traveling-wave protection hardware.
3) the hardware-initiated module 6026 of protection can be as the level comparison circuit among the figure:
This module constitutes the level comparison loop by operational amplifier, HFS in the capable ripple of current failure after passing through band pass filter is (after 3kHz～30kHz) level surpasses default hardware-initiated level, enabling signal is sent to CPLD EMP7128S60214 in hardware-initiated loop, CPLD EMP7128S60214 triggers high speed digital signal processor TMS320C6713 and interrupts, and enters exception handles.
4) the multicircuit switch module 6028:
Multicircuit switch MAX46396028 four selects one high speed diverter switch, exports four tunnel analog signals to A/D modular converter 60210 successively.Two MAX4639 can realize the conversion of 8 tunnel analog signals.
5) the A/D modular converter 60210:
Adopt 2 AD9240 high speed A switch 60210a and 60210b in the A/D modular converter 60210, realize high speed A, the data sampling rate of each road analog signal is reached 1MHz analog signal.
6) the dual port RAM module 60212:
2 dual port RAMs 60212 are used to store 8 way word signals after 60210 conversions of A/D modular converter, and memory space is 128Kbyte.
7) CPLD EMP7128S control and decoding module 60214:
CPLD EMP7128S60214 is the core control section of High Speed Data Acquisition Circuit 602; it is realized the coordination control of multicircuit switch module 6028, A/D modular converter 60210 and dual port RAM module 60212 and the decoding of address/data signal; realization becomes 8 tunnel analog signal conversion in digital signal and storage and the dual port RAM module 60212, and CPLD EMP7128S60214 triggers high speed digital signal processor TMS320C6713 in the hardware-initiated back of traveling-wave protection and enters exception handles simultaneously.
Two, the high-speed digital signal treatment circuit 604
High-speed digital signal treatment circuit 604 is a core with DSP TMS320C67136042, comprising: high speed digital signal processor (DSP) TMS320C67136042, SPI communication module 6044, SDRAM memory 6046, FLASH memory 6048 and the phase-model transformation algoritic module, Wavelet Transformation Algorithm module, the software differentiation algoritic module of fault initiating, the traveling wave fault that are integrated in the TMS320C67136042 select phase algoritic module, polarization current fault traveling wave directional relay.
Each several part function in the high-speed digital signal treatment circuit 604 is as follows:
1)TMS320C67136042：
This is a high-speed digital signal process chip; 32 of data/address buss; can carry out floating-point operation; the precision height; chip internal has 8 arithmetic elements; per second can be carried out 1,600,000,000 instructions, can satisfy the requirement of ultrahigh speed traveling-wave protection to data processing speed and precision simultaneously, the integrated core algorithm program of ultrahigh speed traveling-wave protection in TMS320C6713.
2) the SPI Communication Control 6044:
TMS320C67136042 is by carrying out the SPI serial communication with processor MCF52826062; send fault information data such as fault direction, failure wave-recording to MCF52826062; so that MCF5282 carries out operations such as follow-up protection logic determines and communication, the SPI communication speed reaches 5Mbtye/s.
3) the SDRAM memory 6046:
Adopt 2 SDRAM memories that model is HY57V641620, constitute the random access memory of 32 2Mbyte bytes, be used to deposit algorithm desired data and fault recorder data.
4) the FLASH memory 6048:
The FLASH program storage SST39LF of 512K byte is used to deposit the program of algorithm.TMS320C67136042 automatically reads in the program in the FLASH memory 6048 among the RAM of TMS320C67136042 inside and moves at the back that powers on.
Algorithm routine flow chart among the TMS320C67136042 as shown in Figure 7, this program Solidification is in the FLASH memory, after powering on, TMS320C6713 reads in the program among the FLASH automatically among the RAM of TMS320C6713 inside and moves, and the major function that this program is finished has:
Shown in the flow chart on the left side of Fig. 7, be the self check of high-speed digital signal process chip when normally moving, at first carry out initialization (702), judged whether fixed value modification (704), in judged result is under the situation that is, carrying out step (706), is under the situation not in judged result, carries out step (708), revise definite value (706) and judged whether report (708) afterwards, when being, send this report (710) in judged result, judge whether the self check time arrives (712) after sending, if also be less than, rejudge then whether fixed value modification is arranged,, then carry out self check (714) if arrive;
Continuation is shown in the flow process on Fig. 7 the right, and whether the real-time detection of TMS320C6713 has fault to interrupt, when fault is interrupted, and read failure data (716);
The fault data that reads is carried out phase-model transformation (718);
The multiresolution of asking for wavelet transformation decomposes and modulus maximum (720);
Differentiate fault and whether start (722), as if being not activated, then the fault Interrupt Process finishes, if start, then carries out the determining fault direction (724) of fault choosing phase and polarization current fault direction relay;
Whether the failure judgement direction is forward fault (726), when judged result is the forward fault, then fault message is sent to MCF5282 (728), the troubleshooting EOI, and when judged result is not the forward fault, the troubleshooting EOI.
According to flow process shown in Figure 7, the function of each software module is as follows:
1) TMS320C6713 starts: after row ripple high-frequency orientation protector powered on, TMS320C6713 started.
2) initialization module: each register of TMS320C6713 inside is carried out initialization, correlated variables and flag bit in the protection algorithm are carried out initialization, open DSP and interrupt.
3) selftest module: to the SDRAM memory of TMS320C6713 periphery, SPI communication module etc. carries out self check.
4) IE: whether the interrupt control unit in the TMS320C6713 chip can real-time monitoring have fault to interrupt producing, if there is fault to interrupt producing, then forwards the fault interrupt handling routine immediately to.
5) read failure data: TMS320C6713 reads current traveling wave and voltage traveling wave data from dual port RAM, prepares troubleshooting.
6) phase-model transformation: popular ripple of three-phase electricity and voltage traveling wave data are carried out triumphant human relations Bel conversion respectively, be transformed into three line mold components and one zero mold component.
u 0 u α u β u γ = 1 3 1 1 1 1 - 1 0 - 1 0 1 0 1 - 1 u a u b u c - - - ( 1 )
i 0 i α i β i γ = 1 3 1 1 1 1 - 1 0 - 1 0 1 0 1 - 1 i a i b i c - - - ( 2 )
7) multiresolution of asking for wavelet transformation decomposes and modulus maximum:
The multiresolution decomposing schematic representation of wavelet transformation as shown in Figure 8.Two decomposition formulas that advance wavelet transform are suc as formula (3):
V 2 j f ( n ) = Σ k h k V 2 j - 1 f ( n - 2 j - 1 k ) W 2 j f ( n ) = Σ k g k V 2 j - 1 f ( n - 2 j - 1 k ) - - - ( 3 )
F in the following formula (n) is the discrete sampling value point of current traveling wave or voltage traveling wave, h kAnd g kBe two to advance the bank of filters coefficient in the wavelet transform decomposition algorithm,
h k = ( 0.125,0.375,0.375,0.125 ) ( k = - 1,0,1,2 ) g k = ( - 2,2 ) ( k = 0,1 ) - - - ( 4 )
The current traveling wave signal is carried out the wavelet transformation multiresolution decompose the modulus maximum ask among sub-frequency space W2, W3, the W4 and the polarity of modulus maximum, thereby obtain the wave head polarity S I of current failure initial row ripple α, SI β, SI γ
To the voltage traveling wave modulus at first by formula (5) extract fault traveling wave component in the voltage traveling wave:
u fm(n)＝u m(n)-2u m(n-N)+u m(n-2N) (5)
U in the following formula m(n) be voltage traveling wave modulus value after the ultra-high-tension power transmission line fault, m represents α, three line modulus of beta, gamma, and N is the sampling number of a power frequency period, is 10000 in the present embodiment.
With the capable ripple u of voltage failure Fm(n) multiresolution that carries out wavelet transformation decomposes, and ask for frequency space V12 (modulus maximum polarity in 0～61.0Hz), thus obtain the initial polarity of power frequency component in the capable ripple of voltage failure.
8) software of fault initiating is differentiated: according to lipschitz singularity of signal etection theory, if transmission line malfunction starts, then the modulus maximum of the wavelet transformation modulus maximum of current traveling wave in W2, W3 and W4 space increases successively, and carries out the corresponding subsequent exception handles.If high-frequency interferencing signal causes traveling-wave protection hardware-initiated, then the modulus maximum of the modulus maximum of its wavelet transformation in W2, W3 and W4 space is not to increase successively, and withdraw from the troubleshooting interrupt routine this moment immediately, returns the main circulating program of TMS320C6713.
9) traveling wave fault selects phase module: the wavelet transformation modulus maximum formation fault according to current traveling wave is selected phase module.The flow process that fault is selected the phase algorithm as shown in Figure 9, the groundwork flow process is:
At first judge fault type:
In step 902, judge whether the zero mold component of current traveling wave is zero;
If the zero mold component of the capable ripple of fault after-current is not 0, then is judged to be earth fault, otherwise is phase fault.
In step 906,,, then be single-line to ground fault, otherwise be the two phase ground short circuit if it is 0 that a wavelet transformation modulus maximum is arranged if earth fault judges that again in three electric current line mould wavelet transformation modulus maximums whether a wavelet transformation modulus maximum being arranged is 0.
Or not 904, and, further ask for three absolute value maximum MMImax and absolute value minimum M MImin in the electric current line mould wavelet transformation modulus maximum for phase fault.
In step 908, judge whether MMImax equals 2MMImin, if MMImax=2MMImin then is judged to be line to line fault, otherwise is three-phase shortcircuit.
Judge further that according to fault type fault is separate:
The separate judgement of two-phase short-circuit fault:
If MMI α=MMI γ, then fault is separate: CA
If MMI β=MMI γ, then fault is separate: AB
If MMI α=MMI β, then fault is separate: BC
The separate judgement of three phase short circuit fault: then fault is separate: ABC
The separate judgement of single-line to ground fault:
If MMI γ=0, then fault is separate: A
If MMI β=0, then fault is separate: B
If MMI α=0, then fault is separate: C
The separate judgement of two-phase short circuit and ground fault:
In step 910, carry out triumphant human relations Bel inverse transformation, by MMI α, MMI β, MMI γ asks for MMIa, MMIb, MMIc;
In step 912, ask for MMIa, MMIb, absolute value minimum value among the MMIc:
MMImin＝min(abs(MMIa)，abs(MMIb)，abs(MMIc))
If MMImin=abs (MMIa), then fault is separate: BC
If MMImin=abs (MMIb), then fault is separate: CA
If MMImin=abs (MMIc), then fault is separate: AB
10) polarization current fault traveling wave directional relay:
Decompose at the modulus maximum MMI in W2 space α according to current traveling wave wavelet transformation multiresolution, MMI β, the wavelet transformation multiresolution of MMI γ and the capable ripple of voltage failure decompose at the modulus maximum MMU in V12 space α, MMU β, and MMU γ judges fault direction.The forward criterion of polarization current fault traveling wave directional relay and reverse criterion are shown in Figure 10 a and Figure 10 b:
Shown in Figure 10 a, the positive direction fault: arbitrary line modulus current fault row mode maximum is opposite with the capable mode maximum of current failure polarity.
Shown in Figure 10 b, reverse direction failure: three line modulus current fault row mode maximum are identical with the capable mode maximum of current failure polarity.
11) SPI serial communication module
When polarization current fault traveling wave directional relay is judged to be the forward fault; TMS320C6713 is by carrying out the SPI serial communication with processor MCF5282; send data such as fault direction, failure wave-recording to MCF5282, so that MCF5282 carries out operations such as follow-up protection logic determines and communication.
Three, protection logic determines and input/output interface circuit 606
Protection logic determines and input/output interface circuit 606 are core with microprocessor MCF52826062, comprise: microprocessor MCF5282 module 6062, SPI communication module 6044, ethernet control module 6066, switching input module 6068, switching value output module 6068, CAN communication module 60610,232 communication modules 6064, the capable ripple direction pilot that is integrated in MCF5282 inside are protected the logic determines algorithm.As shown in Figure 6, each functional module function is as follows:
1) microprocessor MCF5282 module 6062:MCF5282 is a 32 high-performance Industry Control chips that Freescale (Freescale) company produces, integrated abundant peripheral functionality module commonly used in this chip, as integrated 3 timers, 2 SPI communication ports, 1 CAN communication controller, 1 ethernet controller, a large amount of universal input/output interface (GPIO) etc., simultaneously chip internal the is integrated FALSH of 256Kbyte and the SRAM of 64Kbyte, runnability is reliable and stable.
2) SPI communication module 6044:MCF5282 and TMS320C6713 carry out the SPI communication, obtain results such as fault direction, fault are separate, failure wave-recording.
3) ethernet control module 6066: fault message transfers to transmission line to skidding ripple direction pilot protective device by ethernet communication with the fault direction of this side of circuit and fault be separate etc.; Receive the fault message that skidding ripple direction pilot protective device is transferred to this skidding ripple direction pilot protective device by Ethernet simultaneously.
4) switching input module 6068: the related switch amount information that this skidding ripple high-frequency orientation protector is used sends microprocessor MCF5282 to, to carry out follow-up protection logic determines.
5) the switching value output module 60612: according to the result of determination of row ripple direction pilot protection, send switch trip order and relevant warning information when troubles inside the sample space.
6) the CAN communication module 60610: the troubleshooting dependent failure report information of the ripple direction pilot of will going protection is transferred to monitor board, to realize storage and the demonstration to Trouble Report.
7) 232 communication modules 6064: the on-line debugging of realizing ultrahigh speed row ripple direction protection plate.
8) among the MCF5282 row ripple direction pilot protection logic determines algorithm flow as shown in figure 11, the flow chart on the left side is the self check of MCF5282 when normally moving, the right is the flow process of judging.Vertical connection direction protection is by allowing signal to constitute the protection Trip Logic; MCF5282 receives this side fault message that DSP transmits by the SPI communicating interrupt; read this fault message (1102); pass through ethernet controller; fault message is transferred to skidding ripple high-frequency orientation protector (1104) by Ethernet; detect ethernet controller simultaneously and whether receive fault message (1106) skidding ripple high-frequency orientation protector; judge and wait for whether time-delay arrives setting value (1108); if in specifying time-delay, do not receive fault message to skidding ripple high-frequency orientation protector; then be judged to be the protected circuit external fault; if receive forward fault message to skidding ripple high-frequency orientation protector; then be judged to be the protected circuit internal fault; this skidding ripple high-frequency orientation protector will open into amount information to judge whether trip and trip separate (1110), send Trouble Report and failure wave-recording at last to monitor board in conjunction with this side.
(6) monitor board 24
The main effect of monitor board be monitor, management traveling-wave protection device, wherein can comprise: microprocessor MCF5282, serial port module, CAN communication module, ethernet communication module, clock module, FLASH memory module, SDRAM memory module, be integrated in embedded OS, LCD MODULE, keyboard operation module, polling module among the MCF5282, upload Trouble Report and failure wave-recording module, pass definite value module, equipment debugging module down.
The structure of the hardware of this monitor board 24 as shown in figure 12, each functions of modules is as follows:
1) microprocessor MCF52821202: 32 embeddings that the microprocessor that this monitor board adopts is produced for Freescale company process chip MCF5282 that declines, this processor is the core calculations and the control element of this monitor board, and all functions of this plate are all finished by this chip and the program module that is integrated in wherein.
2) the FLASH memory 1218: this memory module adopts the AM29LV160DB-90EI of AMD, and this is 16 2M byte FLASH.Be mainly used in store M CF5282 embedded operating system kernel, application program, recorder data and Trouble Report etc.
3) the SDRAM memory 1216: this monitor board has adopted the SDRAM of two 16 8M bytes to form the memory headroom of 32 16M bytes.The SDRAM model is MT48LC4M16A2-75, is used for store M CF5282 program running intermediate data.
4) clock module 1210: this usefulness PCF8563 clock chip carries out timing, provides unified clock information to protective device, can be as accurate as a second level.
5) serial port module 1204: this monitor board adopts two RS232 serial ports level transferring chip MAX3232EEPE, and the demonstration of a control liquid crystal display screen is responsible for output input Debugging message for one.
6) ethernet module 1208: this monitor board transmits by the distant place that ethernet module 1208 is finished data, and the ethernet physical layer chip is selected LXT971ALC for use, and the Ethernet isolating transformer is selected HR601680 for use, and the Ethernet physical interface adopts the RJ45 mouth.
7) the CAN communication module 1206: this monitor board is finished information interaction with high-speed data acquisition and ultrahigh speed traveling-wave protection plate by CAN communication module 1206, and the CAN communication chip adopts CTM8251AT.
8) be integrated in flush bonding module 1300 among the MCF5282: the structure chart of flush bonding module as shown in figure 13.
This monitor board adopts embedded uClinux operating system, finish the control of hardware device, realize various functions, comprising: liquid crystal display, Keyboard Control, patrol and examine, equipment debugging, down pass definite value, upload Trouble Report and failure wave-recording, the concrete effect of each functional module is as follows:
LCD MODULE 1302: real-time circuit current/voltage value, Trouble Report, failure wave-recording waveform, protection definite value.
Keyboard operation module 1304: realize change protection definite value, check Trouble Report and failure wave-recording waveform, carry out machine debugging.
Polling module 1306: after protective device powered on 1 minute, monitor board 24 was patrolled and examined high-speed data acquisition and ultrahigh speed traveling-wave protection plate in per 10 seconds once by the CAN communication.If patrol and examine the undesired warning information that then sends.
Upload Trouble Report and failure wave-recording module 1312: receive the Trouble Report and the fault recorder data of high-speed data acquisition and ultrahigh speed traveling-wave protection plate 23 by the CAN communication, and be kept in the FLASH memory.
Under pass definite value module 1310: the user is reset the protection definite value, sends high-speed data acquisition and ultrahigh speed traveling-wave protection plate to by the CAN communication.
Equipment debugging module 1308: the user can debug the traveling-wave protection device by Man Machine Interfaces such as keyboard, liquid crystal.
(7) the exit relay plate 25
Three-phase outlet tripping relay, closing relay, alarm relay etc. are arranged in the exit relay plate.Functions such as the tripping operation outlet of realization ultrahigh speed row ripple high-frequency orientation protector, closing operation, alarm.
2, ethernet communication system
The ethernet communication system can comprise: traveling-wave protection device Ethernet light mouth; The multiplex interface device; SDH/PDH optical transmission device and SDH/PDH optical fiber communication network, shown in Figure 14 b, the each several part function is as follows:
Traveling-wave protection device Ethernet light mouth: ultrahigh speed row ripple high-frequency orientation protector adopts single mode HFBR5203 light mouth; with the fault message electrical signal conversion of this skidding ripple protection is light signal; be sent to the ultrahigh speed row ripple high-frequency orientation protector of offside through optical fiber communication network, simultaneously the offside traveling-wave protection be converted to the signal of telecommunication through the light signal that optical networking sends.
Multiplexing conversion equipment C1 and C2: realize the conversion of light mouth and standard electric interface G703E1, optical transmission device transmits so that signal enters SDH/PDH.
SDH/PDH optical transmission device D1 and D2: the signal of telecommunication with after the multiplexing conversion equipment conversion, convert light signal to through optical transceiver, be sent to offside SDH/PDH optical transmission device through the SDH/PDH optical fiber communication network.
The Ethernet Fiber Optical Communication System of row ripple direction pilot protection can adopt special optic fibre communication, shown in Figure 14 a, also can adopt the communication of multiplexing (2M) SDH/PDH optical fiber communication network, shown in Figure 14 b.
In other words, under the situation that adopts special optic fibre communication, the ethernet communication device comprises: traveling-wave protection device Ethernet light mouth, the fault message electrical signal conversion that is used for the traveling-wave protection device of local terminal is the fault message light signal, be sent to the traveling-wave protection device of the other end of ultra-high-tension power transmission line through the special optic fibre communication network, receive other fault message light signals that send through the special optic fibre communication network of the other end simultaneously and other fault message light signals are converted to other fault message signals of telecommunication;
Under the situation that adopts the SDH/PDH optical fiber communication, the ethernet communication device comprises: traveling-wave protection device Ethernet light mouth, multiplex interface device, SDH/PDH optical transmission device, wherein,
The multiplex interface device is connected to traveling-wave protection device Ethernet light mouth, receives the fault message light signal that traveling-wave protection device Ethernet light mouth sends, and converts the fault message light signal to the fault message signal of telecommunication;
The SDH/PDH optical transmission device is connected to the multiplex interface device, and the described information electrical signal conversion after the conversion of multiplex interface device is become the information light signal, is sent to the SDH/PDH optical transmission device of the other end through the SDH/PDH optical fiber communication network.
After the composition 26S Proteasome Structure and Function of each components and parts of the present invention that describe in detail, further specify technical scheme of the present invention in conjunction with following example.
The course of work of accompanying drawings technical scheme of the present invention:
1) supposes that protected circuit 1 inside breaks down, as shown in Figure 4;
2) fault point will produce capable ripple of current failure and the capable ripple of voltage failure to circuit two lateral movements.
3) current transformer 2,10 of circuit both sides arrives secondary side with the capable ripple progress of disease of primary side current; Capacitance type potential transformer 3,11 arrives secondary side with the progress of disease of primary side voltage traveling wave.
4) in the ultrahigh speed row ripple high- frequency orientation protector 6 and 14, precision current converter on precision current converter and the accurate voltage converter plate 22 and accurate voltage converter further are transformed into positive and negative 2.5 volts weak electric signal with current traveling wave and voltage traveling wave.This signal is sent to ultrahigh speed traveling-wave protection plate 23 through motherboard 20.
5) in ultrahigh speed traveling-wave protection plate 23, behind voltage traveling wave and the current traveling wave signal process second order active low-pass filter loop, after multicircuit switch and A/D high speed (500kHz) digital translation, become digital signal and be kept in the dual port RAM; Second order active low-pass filter loop output signal is sent to the hardware-initiated loop of traveling-wave protection through second-order bandpass filter simultaneously, produces the fault initiating signal, starts TMS320C6713 and enters exception handles.
6) after TMS320C6713 enters exception handles, read failure data from dual port RAM at first, voltage traveling wave and current traveling wave fault data are carried out phase-model transformation, the multiresolution that carries out wavelet transformation then decomposes, and ask for current traveling wave at frequency space W2{62.5,125kHz}, W3{31.25,62.5kHz}, W4{15.625, the modulus maximum among the 31.25kHz}.According to lipschitz singularity of signal etection theory, carry out the software of fault initiating and differentiate, if the traveling-wave protection that interference signal causes starts, the ripple direction protection of then going withdraws from exception handles immediately; If the traveling-wave protection that line fault causes starts, then protective device enters traveling wave fault choosing phase and polarization current fault traveling wave directional relay algorithm routine.If reverse fault, the ripple direction protection of then going withdraws from exception handles immediately; If the forward fault, then the SPI communication of TMS320C6713 startup and MCF5282 sends dependent failure information to MCF5282, so that carry out the consequent malfunction handling procedure.
7) MCF5282 passes through the Ethernet optical fiber communication network at once with the fault message that TMS320C6713 transmits, fault message is sent to the ultrahigh speed row ripple high-frequency orientation protector of offside, whether detection simultaneously receives the fault message of the ultrahigh speed row ripple high-frequency orientation protector of offside by the Ethernet transmission, if in the wait time-delay of setting, do not receive the fault message that the ultrahigh speed row ripple high-frequency orientation protector of offside transmits, then be judged to be external area error; If receive the fault message that the ultrahigh speed row ripple high-frequency orientation protector of offside transmits in the wait time-delay of setting, the ripple direction protection of then going carries out logic determines in conjunction with opening into amount information of this side, judges whether trip and trip separate.Trip signal sends trip signal by the tripping relay on the microprocessor MCF5282 amount of the leaving driving exit relay plate 25.MCF5282 is sent to monitor board 24 with Trouble Report and failure wave-recording information by the CAN communication at last.
8) monitor board 24 receives Trouble Report and the failure wave-recording that ultrahigh speed traveling-wave protection plate transmits by the CAN communication; on the one hand fault message is presented on the liquid crystal display screen, simultaneously Trouble Report and fault recorder data is sent to monitoring system of electric substation and control centre's supervisory control system by Ethernet.
Technical scheme of the present invention overcomes the weak point of existing resist technology; use High speed data acquisition, high-speed digital signal treatment technology, utilize the multiresolution decomposition technique of wavelet transformation to extract in the wave head polarity of ultra-high-tension power transmission line current failure initial row ripple and the capable ripple of voltage failure power frequency fault component initial polarity to constitute a kind ofly, and utilize the Ethernet optical fiber communication technology to constitute the direction pilot protection system based on polarization current fault traveling wave directional relay.This ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system has superfast performance (fast motion speed is about 10ms); and be not subjected to that current transformer is saturated to be influenced; be not subjected to the influence that capacitance type potential transformer can not the wide band voltage failure travelling wave signal of the progress of disease; be not subjected to the influence of power system oscillation; be not subjected to the influence of transmission line charging capacitor electric current; be not subjected to the influence of transmission line series capacitor and shunt reactor; be not subjected to the influence of transition resistance, can be used as the main protection of ultra-high-tension power transmission line.Can reach following performance index:
1, the data sampling rate of ultrahigh speed row ripple high-frequency orientation protector is that 0～1MHz is optional;
2, the outlet time of polarization current fault traveling wave directional relay is less than 5ms;
3, in the ultrahigh speed row ripple direction pilot protection system ethernet communication time less than 5ms;
4, the action of a whole set of protection outlet time is less than 15ms;
5, can the record protection action failure 30 groups of report and fault recorder datas.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method is characterized in that, comprising:
Step 102, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of first side of described ultra-high-tension power transmission line and the capable ripple of voltage failure respectively, and the initial polarity that obtains power frequency component in the wave head polarity of current failure initial row ripple of second side of described ultra-high-tension power transmission line and the capable ripple of voltage failure respectively;
Step 104, the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of described first side and the capable ripple of voltage failure is compared, to determine the fault direction on described first side, and the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of described second side and the capable ripple of voltage failure compared, to determine the fault direction on described second side; And
Step 106; exchange the information of the fault direction of the information of fault direction of described first side and described second side; when the fault direction on fault direction on described first side and described second side is the forward fault; determine described ultra-high-tension power transmission line generation internal fault; make relaying protection outlet action; when in the fault direction on fault direction on described first side and described second side any one is reverse fault; determine that then described internal fault does not take place described ultra-high-tension power transmission line, the relaying protection outlet is failure to actuate.
2. ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method according to claim 1 is characterized in that described step 102 comprises:
Step 1022 is gathered the voltage traveling wave and the current traveling wave of described first side after the described ultra-high-tension power transmission line fault, gathers the voltage traveling wave and the current traveling wave of described second side after the described ultra-high-tension power transmission line fault;
Step 1024, current traveling wave and voltage traveling wave to described first side that collects carry out current traveling wave modulus and the voltage traveling wave modulus that phase-model transformation obtains described first side respectively, and the current traveling wave and the voltage traveling wave of described second side that collects carried out current traveling wave modulus and the voltage traveling wave modulus that phase-model transformation obtains described second side respectively;
Step 1026, current traveling wave modulus to described first side is carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of described first side, and obtain the electric current wavelet transformation modulus maximum and the modulus maximum polarity of described first side according to the electric current wavelet conversion coefficient of described first side, and then the wave head polarity of the current failure initial row ripple of definite described first side, and the current traveling wave modulus of described second side carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of described second side, and obtain the electric current wavelet transformation modulus maximum and the modulus maximum polarity of described second side, and then determine the wave head polarity of the current failure initial row ripple of described second side according to the electric current wavelet conversion coefficient of described second side; And
Step 1028, from the voltage traveling wave modulus of described first side, extract the voltage failure traveling-wave component, the capable ripple of described voltage failure is carried out wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of described first side, and the voltage failure capable ripple wavelet transformation modulus maximum and the modulus maximum polarity that obtain described first side according to the capable ripple wavelet conversion coefficient of voltage failure of described first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of described first side, and from the voltage traveling wave modulus of described second side, extract the voltage failure traveling-wave component, the capable ripple of described voltage failure is carried out wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of described second side, and the voltage failure capable ripple wavelet transformation modulus maximum and the modulus maximum polarity that obtain described second side according to the capable ripple wavelet conversion coefficient of voltage failure of described first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of described second side.
3. ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method according to claim 1 and 2 is characterized in that, at the judgment basis of fault direction described in the described step 104 is:
If the initial polarity of power frequency component is opposite with the wave head polarity of described current failure initial row ripple in the capable ripple of described voltage failure, then described fault direction is the forward fault;
If the initial polarity of the capable ripple power frequency component of described voltage failure is identical with the wave head polarity of described current failure initial row ripple, then described fault direction is a reverse fault.
4. ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection method according to claim 3; it is characterized in that; in described step 106, the mode by the Ethernet optical fiber communication exchanges the information of the fault direction of the information of fault direction of described first side and described second side.
5. a ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device is characterized in that, is installed in a side of described ultra-high-tension power transmission line, comprising: converter, traveling-wave protection device, watch-dog and exit relay, wherein,
Described converter is connected to described traveling-wave protection device, will be transformed to second voltage and current that uses into for described traveling-wave protection plate from first voltage and current of described ultra-high-tension power transmission line respectively;
Described traveling-wave protection device, be connected to described watch-dog, reception is from second voltage and current of described converter, described second voltage and current is handled to determine the fault message of described ultra-high-tension power transmission line, send described fault message to described watch-dog, outwards send described fault message and reception other fault messages from the outside, the described fault message that described traveling-wave protection device is determined and compare from described other fault messages of outside, and judge whether to trip and to trip separate according to comparative result, described fault message comprises that fault direction and fault are separate;
Described watch-dog is connected to described traveling-wave protection device, shows and store the described fault message of described traveling-wave protection device transmission, monitors described traveling-wave protection device according to the presupposed information of input, and described fault message is sent to the outside; And
Described exit relay receives the result of determination of described traveling-wave protection device, determines whether to send trip signal according to described result of determination.
6. ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device according to claim 5 is characterized in that described watch-dog comprises:
Microprocessor, be connected to a CAN communication module, reception is from the fault message of described traveling-wave protection device with from the input information of Keysheet module, and the input information of described Keysheet module is transferred to described traveling-wave protection device, controls the displaying contents of described LCD MODULE;
A described CAN communication module is connected to described microprocessor, realizes the information interaction with described traveling-wave protection device;
The ethernet communication module receives the described fault message from described traveling-wave protection device, and described fault message is transferred to the outside;
Serial port module is connected to described microprocessor, transmits described displaying contents and debug signal;
Described LCD MODULE is connected to described microprocessor, shows from the described displaying contents of described microprocessor and the information of importing by described Keysheet module;
Described Keysheet module, the information that input is outside;
The one FLASH memory is used to store the control program and the described fault message of described microprocessor; And
The one SDAM memory is used to store the intermediate data of described microprocessor processes;
Wherein,
Described microprocessor also comprises:
Polling module is connected to a described CAN communication module, regularly patrols and examines described traveling-wave protection device by a described CAN communication module, sends warning information when patrolling and examining abnormal state;
Last transmission module is connected to a described CAN communication module, by the described fault message of described CAN communication module reception from described traveling-wave protection device, and is kept in the described FLASH memory;
Following transmission module is connected to a described CAN communication module, and the protection definite value that the user is reset by a described CAN communication module sends described traveling-wave protection device to.
7. according to each described ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device in the claim 5 to 6; it is characterized in that; described traveling-wave protection device comprises: row wave datum acquisition module, row wave datum processing module and information input/output module, wherein
Described capable wave datum acquisition module comprises: kernel control module, second order active low-pass filter module, the passive bandpass filtering modules block of second order, protect hardware-initiated module, multicircuit switch module, A/D modular converter, dual port RAM module, wherein
Described second order active low-pass filter module receives the capable mode analog signal from described ultra-high-tension power transmission line, and described capable mode analog signal is carried out filtering, and described capable mode analog signal comprises voltage traveling wave analog signal and current traveling wave analog signal;
The passive bandpass filtering modules block of described second order is connected to described second order active low-pass filter module, is used for extracting high-frequency signal the row ripple from the signal of the output of described second order active low-pass filter module;
The hardware-initiated module of described protection, reception is from the described high-frequency signal of the passive bandpass filtering modules block of described second order, and determine whether described high-frequency signal satisfies predetermined condition, after described high-frequency signal satisfies described predetermined condition, send enabling signal to described kernel control module;
Described multicircuit switch module is connected to described second order active low-pass filter module, is used for exporting described capable mode analog signal to the A/D modular converter successively after receiving from the control signal of described kernel control module;
Described A/D modular converter is connected to described multicircuit switch module, according to the control signal from described kernel control module, described capable mode analog signal is carried out the A/D conversion, and exports transformation result to the dual port RAM module;
Described dual port RAM module has two groups of data/address buss and two group address buses, is used for storing under the control of described kernel control module the described transformation result from described A/D modular converter, and is read described transformation result by described capable wave datum processing module; And
Described kernel control module, reception is from the described enabling signal of the hardware-initiated module of described protection, control described multicircuit switch, described A/D converter and described dual port RAM, and realize decoding, and send interrupt signal to described capable wave datum processing module to described address bus and described data/address bus;
Described capable wave datum processing module, reception is from the interrupt signal of described kernel control module, read described transformation result from described dual port RAM, described transformation result is handled to obtain fault message, wherein, described fault message comprises that the fault direction of described ultra-high-tension power transmission line, fault are separate;
The information input/output module comprises: message processing module, ethernet control module, switching input module, switching value output module, wherein,
Described message processing module, reception is from the fault message of described capable wave datum processing module, by described ethernet control module reception other fault messages from the opposite side of described ultra-high-tension power transmission line, and receive switching value information from described switching input module, according to from the fault message of described capable wave datum processing module, determine whether tripping operation and trip separate from other fault messages and the described switching value information of described opposite side;
Described ethernet control module, will be from the described fault message of described message processing module, send to the capable ripple high-frequency orientation protector of described ultra-high-tension power transmission line opposite side, and receive described other fault messages that send from the capable ripple high-frequency orientation protector of described opposite side, described other fault messages are sent to described message processing module;
Described switching input module, the switching value information that described traveling-wave protection device is used inputs to described message processing module; And
Described switching value output module receives from the order of tripping of described message processing module and trips separate and send to described exit relay;
The 2nd CAN communication module, the Trouble Report information that receives from described message processing module sends to described watch-dog; And
232 communication modules receive the debug signal that described traveling-wave protection device is debugged from described watch-dog.
8. ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device according to claim 7; it is characterized in that; described capable wave datum processing module comprises: phase-model transformation module, wavelet transformation module, fault initiating discrimination module, traveling wave fault select phase module, the capable ripple directional relay of polarity comparison expression module, wherein
Described phase-model transformation module obtains modulus row wave datum to carrying out triumphant human relations Bel conversion from the described transformation result of described dual port RAM;
Described wavelet transformation module, reception is from the described modulus row wave datum of described phase-model transformation module, and described modulus row wave datum carried out the polarity that wavelet transformation obtains the modulus maximum and the described modulus maximum of wavelet transformation, and obtain the wave head polarity of fault initial row ripple according to the polarity of described modulus maximum;
Described fault initiating discrimination module, reception is from the described modulus maximum of described wavelet transformation module, determine whether to cause the described startup of the hardware-initiated module of described protection for line fault according to Lipschitz singularity of signal etection theory, and only when being defined as described line fault and causing the described startup of the hardware-initiated module of described protection, row ripple directional relay module when starting described traveling wave fault and selecting phase module and described polarity relatively;
Described traveling wave fault selects phase module, receives the described modulus maximum from described wavelet transformation module, and confirms that according to described modulus maximum the fault type of described circuit and fault are separate;
The capable ripple directional relay of described polarity comparison expression module, reception is from the wave head polarity of the fault initial row ripple of described wavelet transformation module, and confirm the fault direction of described circuit, and confirm whether to send described fault direction and described fault is separate to described information input/output module according to the fault direction on the described circuit according to the wave head polarity of described fault initial row ripple.
9. ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device according to claim 8 is characterized in that described capable wave datum processing module also comprises:
The 2nd SDRAM memory is used to store described capable wave datum processing module and handles required data;
The 2nd FLASH memory is used to store the algorithm routine that described capable wave datum processing module is adopted; And
The SPI communication control module makes described capable wave datum processing module and described information input/output module carry out the SPI communication, and described fault message is sent to described information input/output module.
10. ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protection system; it is characterized in that; first side at ultra-high-tension power transmission line is provided with as each described first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device in the claim 5 to 10; first voltage transformer; first current transformer; first circuit breaker and the first ethernet communication device; and be provided with as each described second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device in the claim 5 to 10 in second side of described ultra-high-tension power transmission line; second voltage transformer; second current transformer; second circuit breaker and the second ethernet communication device; wherein
Described first voltage transformer and described second voltage transformer, with the voltage transitions on the described ultra-high-tension power transmission line for providing respectively to the voltage of described first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device and the described second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device;
Described first current transformer and described second current transformer, with the current conversion on the described ultra-high-tension power transmission line for providing respectively to the electric current of described first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device and the described second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device;
The described first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, from voltage and current, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of first side of described ultra-high-tension power transmission line and the capable ripple of voltage failure respectively from described first voltage transformer and described first current transformer, and determine the fault direction of described ultra-high-tension power transmission line first side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of described first side and the capable ripple of voltage failure, and by described ethernet communication device, reception is from other fault messages of the described second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device of second side, determine that according to described other fault messages of the described fault message of first side and second side the fault type of described ultra-high-tension power transmission line and fault are separate, and determine whether to send trip signal to described first exit relay;
The described second ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, from voltage and current, obtain the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of second side of described ultra-high-tension power transmission line and the capable ripple of voltage failure respectively from described second voltage transformer and described second current transformer, and determine the fault direction of described ultra-high-tension power transmission line second side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of described second side and the capable ripple of voltage failure, and by described ethernet communication device, reception is from other fault messages of the described first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device of first side, determine that according to described other fault messages of the described fault message of second side and first side the fault type of described ultra-high-tension power transmission line and fault are separate, and determine whether to send trip signal to described second exit relay;
The described first ethernet communication device, send the described fault message of described ultra-high-tension power transmission line first side described second ethernet communication device of second side of described ultra-high-tension power transmission line to by optical fiber communication network, realize described fault message mutual at described ultra-high-tension power transmission line two ends;
The described second ethernet communication device sends the described fault message of described ultra-high-tension power transmission line second side to by optical fiber communication network the described first ethernet communication device of described ultra-high-tension power transmission line first side;
Described first circuit breaker is installed on the described ultra-high-tension power transmission line, receives the trip signal from the described first ultra-high-tension power transmission line ultrahigh speed row ripple direction pilot protective device, disconnects or closed described ultra-high-tension power transmission line; And
Described second circuit breaker is installed on the described ultra-high-tension power transmission line, receives the trip signal from the described second row ripple high-frequency orientation protector, disconnects or closed described ultra-high-tension power transmission line.
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