CN102122815B - 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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CN102122815B
CN102122815B CN201110047582.5A CN201110047582A CN102122815B CN 102122815 B CN102122815 B CN 102122815B CN 201110047582 A CN201110047582 A CN 201110047582A CN 102122815 B CN102122815 B CN 102122815B
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module
fault
transmission line
wave
ultra
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CN102122815A (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 impact of the factors such as traditional relaying protection based on power frequency quality is subject to that ultra-high-tension power transmission line capacitance current, current transformer are saturated, power system oscillation and transition resistance; the accurately fault on detection line, and responsiveness is generally in 20ms left and right.
In the capable ripple of current failure after ultra-high-tension power transmission line fault and the capable ripple of voltage failure, comprise abundant fault message and can be used as the foundation of fault detect.And the capable ripple of voltage failure and current failure travelling wave signal after fault is a signal that spectral range is very wide, current transformer has good broadband progress of disease characteristic, the effectively capable ripple of progress of disease current failure, and be successfully applied to electric power system travelling wave ranging.And the effectively capable ripple of the wide band voltage failure of the progress of disease of capacitance type potential transformer generally using in ultra-high/extra-high voltage electric power system, this is also not have traveling-wave protection device to drop into one of major reason of electric power system practical application at present.Although the effectively capable ripple of the wide band voltage failure of the progress of disease of capacitance type potential transformer generally using in ultra-high/extra-high voltage electric power system; 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 subject to that ultra-high-tension power transmission line capacitance current, current transformer are saturated, the impact of the factor such as power system oscillation and transition resistance.Simultaneously because traveling-wave protection data sampling rate is high; be generally hundreds of thousands hertz; data acquisition amount and data processing amount are all very large; and protective device is very high to the rate request of data processing; so traveling-wave protection is also had higher requirement to the hardware platform of protection, traditional relaying protection hardware platform based on power frequency quality can not meet the needs of traveling-wave protection.
Therefore, need a kind of ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection technology, realize 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; 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 directional pilot protection device are provided and there is the system of this ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device; detect accurately and quickly fault and the fault type of ultra-high-tension power transmission line, and make in time 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 respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the first side of ultra-high-tension power transmission line and the capable ripple of voltage failure, and obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the second side of ultra-high-tension power transmission line and the capable ripple of voltage failure; Step 104, the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the first side and the capable ripple of voltage failure is compared, to determine the fault direction in the first side, and the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the second side and the capable ripple of voltage failure is compared, to determine the fault direction in the second side; And step 106; exchange the information of fault direction of the first side and the information of the fault direction of the second side; in the time that the fault direction in the fault direction in the first side and the second side is forward fault; determine ultra-high-tension power transmission line generation internal fault; make relay protection outlet action; in the time that any one in the fault direction in the fault direction in the first side and the second side is reverse fault, determine that internal fault does not occur ultra-high-tension power transmission line, relay protection outlet is failure to actuate.
In technique scheme, preferably, step 102 can comprise: step 1022, voltage traveling wave and the current traveling wave of the first side after collection ultra-high-tension power transmission line fault, voltage traveling wave and the current traveling wave of the second side after collection ultra-high-tension power transmission line fault, step 1024, current traveling wave to the first side collecting and voltage traveling wave carry out respectively phase-model transformation and obtain current traveling wave modulus and the voltage traveling wave modulus of the first side, and the current traveling wave to the second side collecting and voltage traveling wave carry out respectively phase-model transformation and obtain current traveling wave modulus and the voltage traveling wave modulus of the second side, step 1026, current traveling wave modulus to the first side is carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of the first side, and obtain electric current wavelet modulus maxima and the modulus maximum polarity of the first side according to the electric current wavelet conversion coefficient of the first side, and then the wave head polarity of the current failure initial row ripple of definite the first side, and the current traveling wave modulus of the second side is carried out to wavelet transformation, obtain the electric current wavelet conversion coefficient of the second side, and obtain electric current wavelet modulus maxima and the modulus maximum polarity of the second side according to the electric current wavelet conversion coefficient of described the second side, and then the wave head polarity of the current failure initial row ripple of definite the second side, and step 1028, from the voltage traveling wave modulus of the first side, extract voltage failure traveling-wave component, the capable ripple of voltage failure is carried out to wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of the first side, and the capable ripple wavelet modulus maxima of voltage failure and the modulus maximum polarity that obtain the first side according to the capable ripple wavelet conversion coefficient of the voltage failure of the first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of the first side, and extract voltage failure traveling-wave component from the voltage traveling wave modulus of the second side, the capable ripple of voltage failure is carried out to wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of the second side, and the capable ripple wavelet modulus maxima of voltage failure and the modulus maximum polarity that obtain the second side according to the capable ripple wavelet conversion coefficient of the voltage failure of the first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of the second side.
In technique scheme, preferably, in step 104, the judgment basis of fault direction is: if the initial polarity of power frequency component is contrary with the wave head polarity of current failure initial row ripple in the capable ripple of voltage failure, fault direction is 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, fault direction is reverse fault.
In technique scheme, preferably, in step 106, exchange the information of fault direction of the first side and the information of the fault direction of the second side by the mode of Ethernet optical fiber communication.
The present invention also provides a kind of ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, be arranged on 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 traveling-wave protection device, will be transformed to respectively as the second voltage for traveling-wave protection plate and electric current from the first voltage and current of ultra-high-tension power transmission line; Traveling-wave protection device, be connected to watch-dog, receive second voltage and electric current from described converter, described second voltage and electric current are processed to determine to the fault message of ultra-high-tension power transmission line, send fault message to watch-dog, outwards send fault message and receive other fault messages from outside, compare by fault message definite traveling-wave protection device with from other fault messages of outside, and according to comparative result determine whether tripping operation and trip separate, fault message comprise fault direction and fault separate; Watch-dog, is connected to traveling-wave protection device, and the fault message that demonstration and storage line ripple protector transmit according to the presupposed information monitoring traveling-wave protection device of input, and is sent to outside by fault message; 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, receive from the fault message of traveling-wave protection device with from the input message of Keysheet module, the input message of Keysheet module is transferred to traveling-wave protection device, control the displaying contents of LCD MODULE; The one CAN communication module, is connected to microprocessor, realizes the information interaction with traveling-wave protection device; Ethernet communication module, receives the fault message from traveling-wave protection device, and transmitting fault information is extremely outside; Serial port module, is connected to microprocessor, transmission displaying contents and debug signal; LCD MODULE, is connected to microprocessor, shows from the displaying contents of microprocessor and the information inputted by Keysheet module; Keysheet module, inputs outside information; The one FLASH memory, for control program and the fault message of storage microprocessor; And a SDAM memory, for the intermediate data of storage microprocessor processing; Wherein, microprocessor can also comprise: polling module, be connected to a CAN communication module, and patrol and examine traveling-wave protection device by a CAN communication module timing, in the time patrolling and examining abnormal state, send warning information; Upper transmission module, is connected to a CAN communication module, receives the fault message from traveling-wave protection device, and be kept in FLASH memory by a CAN communication module; Lower transmission module, is connected to a CAN communication module, and protection definite value user being reset by a CAN communication module sends traveling-wave protection device to.
In technique scheme, preferably, traveling-wave protection device can comprise: row wave datum acquisition module, row wave datum processing module and input information 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, multicircuit switch module, A/D modular converter, dual port RAM module, wherein second order active low-pass filter module, receive the row wave simulation signal from ultra-high-tension power transmission line, row wave simulation signal is carried out to filtering, row wave simulation 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, extracts the high-frequency signal row ripple for the signal from the output of second order active low-pass filter module, protect hardware-initiated module, receive from the high-frequency signal of the passive bandpass filtering modules block of second order, and whether definite high-frequency signal meet predetermined condition, meet after predetermined condition at high-frequency signal, send enabling signal to kernel control module, multicircuit switch module, is connected to second order active low-pass filter module, for export successively row wave simulation signal to A/D modular converter after receiving from the control signal of kernel control module, A/D modular converter, is connected to multicircuit switch module, according to the control signal from kernel control module, row wave simulation signal is carried out to A/D conversion, and export transformation result to dual port RAM module, dual port RAM module, has two groups of data/address buss and two group address buses, for store the transformation result from A/D modular converter under the control of kernel control module, 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 the decoding to address bus and data/address bus, and send interrupt signal to row wave datum processing module, row wave datum processing module, receives from the interrupt signal of kernel control module, reads transformation result from dual port RAM, and transformation result is processed to obtain fault message, and wherein, fault message comprises that the fault direction of ultra-high-tension power transmission line, fault are separate, input information 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, receive other fault messages from the opposite side of ultra-high-tension power transmission line by ethernet control module, and receive from the switching value information of switching input module, according to come wave datum processing module voluntarily fault message, 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 row ripple high-frequency orientation protector of ultra-high-tension power transmission line opposite side, and receive other fault messages that send from the row ripple high-frequency orientation protector of opposite side, other fault messages are sent to message processing module, switching input module, the switching value input information that traveling-wave protection device is used is to message processing module, and 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, receives and sends to watch-dog from the Trouble Report information of message processing module, and 232 communication modules, receive the debug signal that 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 phase selection module, the capable ripple directional relay of polarity comparison expression module, wherein phase-model transformation module, carries out triumphant human relations Bel conversion to the transformation result from dual port RAM and obtains modulus row wave datum; Wavelet transformation module, receive the modulus row wave datum from phase-model transformation module, and modulus row wave datum is carried out to wavelet transformation obtain the polarity of 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; Fault initiating discrimination module, receive the modulus maximum from wavelet transformation module, determine whether to cause protecting for line fault the startup of hardware-initiated module according to the Singularity Detection theory of Lipschitz signal, and only in the time being defined as line fault and causing protecting the startup of hardware-initiated module, start traveling wave fault phase selection module and polarity row ripple directional relay module relatively time; Traveling wave fault phase selection module, receives the modulus maximum from wavelet transformation module, and confirms that according to modulus maximum fault type and the fault of circuit are separate; The capable ripple directional relay of polarity comparison expression module, receive the wave head polarity from the fault initial row ripple of wavelet transformation module, and confirm the fault direction of circuit according to the wave head polarity of fault initial row ripple, and be confirmed whether to send fault direction and fault is separate to input information output module according to the fault direction on circuit.
In technique scheme, preferably, row wave datum processing module can also comprise: the 2nd SDRAM memory, process required data for storage line wave datum processing module; The 2nd FLASH memory, the algorithm routine adopting for storage line wave datum processing module; And SPI communication control module, make row wave datum processing module and input information output module carry out SPI communication, fault message is sent to input information output module.
The present invention also provides a kind of ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection system, be provided with as the first above ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device in the first side of ultra-high-tension power transmission line, the first voltage transformer, the first current transformer, the 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 directional pilot protection device in the second side of ultra-high-tension power transmission line, second voltage instrument transformer, the second current transformer, the second circuit breaker and the second ethernet communication device, wherein, the first voltage transformer and second voltage instrument transformer, by the voltage transitions on 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 directional pilot protection device and the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, the first current transformer and the second current transformer, by the current conversion on 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 directional pilot protection device and the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, from the voltage and current from the first voltage transformer and the first current transformer, obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the first side of described ultra-high-tension power transmission line and the capable ripple of voltage failure, and determine the fault direction of ultra-high-tension power transmission line the first side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the first side and the capable ripple of voltage failure, and by ethernet communication device, receive other fault messages from the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of the second side, according to other fault messages of the fault message of the first side and the second side determine the fault type of ultra-high-tension power transmission line and fault separate, and determine whether to send trip signal to the first exit relay, the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, from the voltage and current from second voltage instrument transformer and the second current transformer, obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the second side of ultra-high-tension power transmission line and the capable ripple of voltage failure, and determine the fault direction of ultra-high-tension power transmission line the second side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the second side and the capable ripple of voltage failure, and by ethernet communication device, receive other fault messages from the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of the first side, according to other fault messages of the fault message of the second side and the first side determine the fault type of ultra-high-tension power transmission line and fault separate, and determine whether to send trip signal to the second exit relay, the first ethernet communication device, sends the fault message of ultra-high-tension power transmission line the first side to by optical fiber communication network the second ethernet communication device of the second side of ultra-high-tension power transmission line, 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 the second side to by optical fiber communication network the first ethernet communication device of ultra-high-tension power transmission line the first side, the first circuit breaker, is arranged on ultra-high-tension power transmission line, receives the trip signal from the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, disconnects or closed high transmission line, and second circuit breaker, be arranged on ultra-high-tension power transmission line, receive the trip signal from the second row ripple high-frequency orientation protector, disconnect or closed high transmission line.
Accompanying drawing explanation
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 directional pilot protection 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 directional 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 directional pilot protection system according to an embodiment of the invention;
Fig. 5 shows ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection apparatus structure schematic diagram 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 Decomposition schematic diagram of wavelet transformation according to an embodiment of the invention;
Fig. 9 shows the program flow diagram of traveling wave fault phase selection module according to an embodiment of the invention;
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 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 clearly to understand above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.
Set forth in the following description a lot of details 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 respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the first side of ultra-high-tension power transmission line and the capable ripple of voltage failure, and obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the second side of ultra-high-tension power transmission line and the capable ripple of voltage failure; Step 104, the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the first side and the capable ripple of voltage failure is compared, to determine the fault direction in the first side, and the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the second side and the capable ripple of voltage failure is compared, to determine the fault direction in the second side; And step 106; exchange the information of fault direction of the first side and the information of the fault direction of the second side; in the time that the fault direction in the fault direction in the first side and the second side is forward fault; determine ultra-high-tension power transmission line generation internal fault; make relay protection outlet action; in the time that any one in the fault direction in the fault direction in the first side and the second side is reverse fault, determine that internal fault does not occur ultra-high-tension power transmission line, relay protection outlet is failure to actuate.
In technique scheme, preferably, step 102 can comprise: step 1022, voltage traveling wave and the current traveling wave of the first side after collection ultra-high-tension power transmission line fault, voltage traveling wave and the current traveling wave of the second side after collection ultra-high-tension power transmission line fault, step 1024, current traveling wave to the first side collecting and voltage traveling wave carry out respectively phase-model transformation and obtain current traveling wave modulus and the voltage traveling wave modulus of the first side, and the current traveling wave to the second side collecting and voltage traveling wave carry out respectively phase-model transformation and obtain current traveling wave modulus and the voltage traveling wave modulus of the second side, step 1026, current traveling wave modulus to the first side is carried out wavelet transformation, obtain the electric current wavelet conversion coefficient of the first side, and obtain electric current wavelet modulus maxima and the modulus maximum polarity of the first side according to the electric current wavelet conversion coefficient of the first side, and then the wave head polarity of the current failure initial row ripple of definite the first side, and the current traveling wave modulus of the second side is carried out to wavelet transformation, obtain the electric current wavelet conversion coefficient of the second side, and obtain electric current wavelet modulus maxima and the modulus maximum polarity of the second side according to the electric current wavelet conversion coefficient of described the second side, and then the wave head polarity of the current failure initial row ripple of definite the second side, and step 1028, from the voltage traveling wave modulus of the first side, extract voltage failure traveling-wave component, the capable ripple of voltage failure is carried out to wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of the first side, and the capable ripple wavelet modulus maxima of voltage failure and the modulus maximum polarity that obtain the first side according to the capable ripple wavelet conversion coefficient of the voltage failure of the first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of the first side, and extract voltage failure traveling-wave component from the voltage traveling wave modulus of the second side, the capable ripple of voltage failure is carried out to wavelet transformation, obtain the capable ripple wavelet conversion coefficient of voltage failure of the second side, and the capable ripple wavelet modulus maxima of voltage failure and the modulus maximum polarity that obtain the second side according to the capable ripple wavelet conversion coefficient of the voltage failure of the first side, and then determine the initial polarity of power frequency component in the capable ripple of voltage failure of the second side.
In technique scheme, preferably, in step 104, the judgment basis of fault direction is: if the initial polarity of power frequency component is contrary with the wave head polarity of current failure initial row ripple in the capable ripple of voltage failure, fault direction is 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, fault direction is reverse fault.
In technique scheme, preferably, in step 106, exchange the information of fault direction of the first side and the information of the fault direction of the second side by the mode of Ethernet optical fiber communication.
Fig. 2 shows the block diagram of ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device according to an embodiment of the invention.
As shown in Figure 2, ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device 200 according to an embodiment of the invention, be arranged on 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 respectively as the second voltage for traveling-wave protection plate and electric current from the first voltage and current of ultra-high-tension power transmission line; Traveling-wave protection device 204, be connected to watch-dog 206, receive second voltage and electric current from described converter 202, described second voltage and electric current are processed to determine to the fault message of ultra-high-tension power transmission line, send fault message to watch-dog 206, outwards send fault message and receive other fault messages from outside, compare by fault message definite traveling-wave protection device 204 with from other fault messages of outside, and according to comparative result determine whether tripping operation and trip separate, fault message comprise fault direction and fault 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 according to the presupposed information monitoring traveling-wave protection device 204 of input, and is sent to outside by fault message; 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, receive from the fault message of traveling-wave protection device 204 with from the input message of Keysheet module, the input message of Keysheet module is transferred to traveling-wave protection device 204, control the displaying contents of 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 transmitting fault information is extremely outside; Serial port module, is connected to microprocessor 2062, transmission displaying contents and debug signal; LCD MODULE 2068, is connected to microprocessor 2062, shows from the displaying contents of microprocessor 2062 and the information inputted by Keysheet module; Keysheet module 20610, inputs outside information; The one FLASH memory 20612, for control program and the fault message of storage microprocessor 2062; And a SDAM memory 20614, the intermediate data of processing for storage microprocessor 2062; Wherein, microprocessor 2062 can also comprise: polling module, be connected to a CAN communication module 2064, and patrol and examine traveling-wave protection device 204 by CAN communication module 2064 timings, in the time patrolling and examining abnormal state, send warning information; Upper transmission module, is connected to a CAN communication module 2064, receives the fault message from traveling-wave protection device 204 by a CAN communication module 2064, and is kept in FLASH memory; Lower transmission module, is connected to a CAN communication module 2064, and protection definite value user being reset by a CAN communication module 2064 sends traveling-wave protection device 204 to.
In technique scheme, preferably, traveling-wave protection device 204 can comprise: row wave datum acquisition module 2042, row wave datum processing module 2044 and input information 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, multicircuit switch module, A/D modular converter, dual port RAM module, wherein second order active low-pass filter module, receive the row wave simulation signal from ultra-high-tension power transmission line, row wave simulation signal is carried out to filtering, row wave simulation 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, extracts the high-frequency signal row ripple for the signal from the output of second order active low-pass filter module, protect hardware-initiated module, receive from the high-frequency signal of the passive bandpass filtering modules block of second order, and whether definite high-frequency signal meet predetermined condition, meet after predetermined condition at high-frequency signal, send enabling signal to kernel control module, multicircuit switch module, is connected to second order active low-pass filter module, for export successively row wave simulation signal to A/D modular converter after receiving from the control signal of kernel control module, A/D modular converter, is connected to multicircuit switch module, according to the control signal from kernel control module, row wave simulation signal is carried out to A/D conversion, and export transformation result to dual port RAM module, dual port RAM module, has two groups of data/address buss and two group address buses, for store the transformation result from A/D modular converter under the control of kernel control module, 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 the decoding to address bus and data/address bus, and send interrupt signal to row wave datum processing module 2044, row wave datum processing module 2044, receives from the interrupt signal of kernel control module, reads transformation result from dual port RAM, and transformation result is processed to obtain fault message, and wherein, fault message comprises that the fault direction of ultra-high-tension power transmission line, fault are separate, input information output module 2046, can 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 2044 voluntarily, receive other fault messages from the opposite side of ultra-high-tension power transmission line by ethernet control module 2, and reception is from the switching value information of switching input module, according to carrying out 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 row ripple high-frequency orientation protector of ultra-high-tension power transmission line opposite side, and receive other fault messages that send from the row ripple high-frequency orientation protector of opposite side, other fault messages are sent to message processing module, switching input module, the switching value input information that traveling-wave protection device is used is to message processing module, and 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, receives and sends to watch-dog 206 from the Trouble Report information of message processing module, 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 phase selection module, the capable ripple directional relay of polarity comparison expression module, wherein phase-model transformation module, carries out triumphant human relations Bel conversion to the transformation result from dual port RAM and obtains modulus row wave datum; Wavelet transformation module, receive the modulus row wave datum from phase-model transformation module, and modulus row wave datum is carried out to wavelet transformation obtain the polarity of 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; Fault initiating discrimination module, receive the modulus maximum from wavelet transformation module, determine whether to cause protecting for line fault the startup of hardware-initiated module according to the Singularity Detection theory of Lipschitz signal, and only in the time being defined as line fault and causing protecting the startup of hardware-initiated module, start traveling wave fault phase selection module and polarity row ripple directional relay module relatively time; Traveling wave fault phase selection module, receives the modulus maximum from wavelet transformation module, and confirms that according to modulus maximum fault type and the fault of circuit are separate; The capable ripple directional relay of polarity comparison expression module, receive the wave head polarity from the fault initial row ripple of wavelet transformation module, and confirm the fault direction of circuit according to the wave head polarity of fault initial row ripple, and be confirmed whether to send fault direction and fault is separate to input information output module 2046 according to the fault direction on circuit.
In technique scheme, preferably, row wave datum processing module 2044 can also comprise: the 2nd SDRAM memory, process required data for storage line wave datum processing module 2044; The 2nd FLASH memory, the algorithm routine adopting for storage line wave datum processing module 2044; And SPI communication control module, make row wave datum processing module 2044 and input information output module 2046 carry out SPI communication, fault message is sent to input information output module 2046.
Fig. 3 shows the block diagram of ultra-high-tension power transmission line ultrahigh speed row ripple directional 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 directional pilot protection system 300 according to an embodiment of the invention, be provided with the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device 302a as shown in Figure 2 in the first side of ultra-high-tension power transmission line, 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 directional pilot protection device 302b as shown in Figure 2 in the second side of ultra-high-tension power transmission line, second voltage instrument 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 second voltage instrument transformer 304b, by the voltage transitions on 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 directional pilot protection device 302a and the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device 302b, the first current transformer 306a and the second current transformer 306b, by the current conversion on 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 directional pilot protection device 302a and the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device 302b, the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device 302a, from the voltage and current from the first voltage transformer 304a and the first current transformer 306a, obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the first side of described ultra-high-tension power transmission line and the capable ripple of voltage failure, and determine the fault direction of ultra-high-tension power transmission line the first side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the first side and the capable ripple of voltage failure, and by ethernet communication device, receive other fault messages from the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of the second side, according to other fault messages of the fault message of the first side and the second side determine the fault type of ultra-high-tension power transmission line and fault separate, and determine whether to send trip signal to the first exit relay, the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, from the voltage and current from second voltage instrument transformer 304b and the second current transformer 306b, obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the second side of ultra-high-tension power transmission line and the capable ripple of voltage failure, and determine the fault direction of ultra-high-tension power transmission line the second side according to the initial polarity of power frequency component in the wave head polarity of the current failure initial row ripple of the second side and the capable ripple of voltage failure, and by ethernet communication device, receive other fault messages from the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of the first side, according to other fault messages of the fault message of the second side and the first side determine the fault type of ultra-high-tension power transmission line and fault separate, and determine whether to send trip signal to the second exit relay, the first ethernet communication device 310a, sends the fault message of ultra-high-tension power transmission line the first side to by optical fiber communication network the second ethernet communication device 310b of the second side of ultra-high-tension power transmission line, 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 the second side to by optical fiber communication network the first ethernet communication device 310a of ultra-high-tension power transmission line the first side, the first circuit breaker 308a, is arranged on ultra-high-tension power transmission line, receives the trip signal from the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, disconnects or closed high transmission line, and the second circuit breaker 308b, be arranged on ultra-high-tension power transmission line, receive the trip signal from the second row ripple high-frequency orientation protector, disconnect or closed high transmission line.
Fig. 4 shows the schematic diagram of ultra-high-tension power transmission line ultrahigh speed row ripple directional 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 directional pilot protection protection system of embodiments of the invention can be applicable in a typical 750kV transmission line, can comprise: transmission line 1, 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 the ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device shown in Fig. 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 the each components and parts in the ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection protection system shown in Fig. 4 is respectively described below:
(1) transmission line 1 is protected transmission line.
(2) current transformer 2 and 10, for becoming the large current transformation on ultra-high-tension power transmission line in for example 1 ampere, little electric current.
(3) capacitance type potential transformer 3 and 11, for changing the high-voltage variable on ultra-high-tension power transmission line into for example 57.7 volts of low-voltages.
(4) equivalent electric power system 4 and 12, represents to be connected to the electric power system at these ultra-high-tension power transmission line two ends.
(5) bus 5 and 13, represents the bus of this ultra-high-tension power transmission line two ends transformer station.
(6) circuit breaker 17 and 18, for this ultra-high-tension power transmission line of closed and disconnected.
(7) SDH/PDH optical transmission device 8 and 16, for converting the electrical signal to light signal, and transfers to SDH/PDH optical fiber communication network.
(8) SDH/PDH optical fiber communication network 9, for transmitting the information of the each node of SDH/PDH fiber optic network.
In this ultra-high-tension power transmission line, be arranged on the pith that two ultrahigh speed row ripple high-frequency orientation protectors (as 6 and 14) at protected transmission line 1 two ends and Ethernet Fiber Optical Communication System (as 7,8 and 16,15,9) have formed this ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection system, wherein ultrahigh speed row ripple high-frequency orientation protector is used for realizing relaying protection; And Ethernet Fiber Optical Communication System is for exchanging the fault message of two protective devices.Structure and the detailed functions of this two pith are respectively described below:
1, be applied to the ultrahigh speed row ripple high-frequency orientation protector in this ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection protection system; its composition 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 to side by side on motherboard 20 and are fixed in 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: fixing each feature board is installed, and is there is shielding external electromagnetic interference function.
LCDs 191: for showing the fault message such as Trouble Report, failure wave-recording after line information and the fault in normal when operation.Liquid crystal display screen adopts colored 3.5 cun of TFT liquid crystal display screens, and the resolution of display screen is 320 × 240.
Operation push-button 192: for protection definite value is set, show the 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: for transmitting 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 in analog.Power is 500 watts.
(4) precision current converter and accurate voltage converter plate 22: the precision current converter that is UCT-01-5A/3.53mA by 4 models, 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, 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 gathering after fault, and to the software that the current traveling wave signal collecting and voltage traveling wave signal carry out respectively Multiresolution Decomposition algorithm, the fault initiating of phase-model transformation, wavelet transformation differentiate, the processing of traveling wave fault phase selection and polarization current fault traveling wave direction protective relay algorithm.Send the fault direction information of this side of ultra-high-tension power transmission line to the ultrahigh speed row ripple high-frequency orientation protector of the offside of ultra-high-tension power transmission line simultaneously; receive the fault direction information of the ultrahigh speed row ripple high-frequency orientation protector of offside; and receive local intake information; the judgement of the every trade of going forward side by side ripple pilot direction protection logic, sends the functions such as the amount of outputing information according to judged result.
And the hardware of ultrahigh speed traveling-wave protection plate formation can be as shown in Figure 6, it is made up of High Speed Data Acquisition Circuit 602, high-speed digital signal treatment circuit 604 and the judgement of protection logic and input/output interface circuit 606 3 parts.
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, protects hardware-initiated module 6026, multicircuit switch module 6028, A/D modular converter 60210, dual port RAM module 60212, complex programmable device (CPLD) EMP7128S are controlled and decoding module 60214.Wherein:
1) second order active low-pass filter module 6022:
8 tunnel analog signals, after motherboard terminal inputs to ultrahigh speed traveling-wave protection plate 23, enter second order active low-pass filter module 6022, and the cut-off frequency of this second order active low-pass filter module 6022 is 250kHz, meet Shannon's sampling theorem and filtering High-frequency Interference.
2) the passive bandpass filtering modules block 6024 of second order:
The band passband rate 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) protect the hardware-initiated module 6026 can be as the level comparison circuit in figure:
This module forms level comparison loop by operational amplifier, when HFS (3kHz～30kHz) level in the capable ripple of the current failure after band pass filter exceedes after 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) multicircuit switch module 6028:
Multicircuit switch MAX46396028 four selects one high speed COMS bus exchange switch, and Jiang Si road analog signal exports A/D modular converter 60210 successively to.Two MAX4639 can realize the conversion of 8 tunnel analog signals.
5) A/D modular converter 60210:
In A/D modular converter 60210, adopt 2 AD9240 high speed A/D conversion switch 60210a and 60210b, realize the high speed A/D conversion to analog signal, the data sampling rate of each road analog signal is reached to 1MHz.
6) dual port RAM module 60212:
2 dual port RAMs 60212 are for storing 8 railway digital signals after 60210 conversions of A/D modular converter, and memory space is 128Kbyte.
7) CPLD EMP7128S controls and decoding module 60214:
CPLD EMP7128S60214 is the core control section of High Speed Data Acquisition Circuit 602; it realizes coordination control to multicircuit switch module 6028, A/D modular converter 60210 and dual port RAM module 60212 and the decoding of address/data signal; realize 8 tunnel analog signals are converted in digital signal storage and dual port RAM module 60212, CPLD EMP7128S60214 enters exception handles at the hardware-initiated rear triggering high speed digital signal processor TMS320C6713 of traveling-wave protection simultaneously.
Two, high-speed digital signal treatment circuit 604
High-speed digital signal treatment circuit 604, take DSP TMS320C67136042 as core, comprising: high speed digital signal processor (DSP) TMS320C67136042, SPI communication module 6044, SDRAM memory 6046, FLASH memory 6048 and the software that is integrated in phase-model transformation algoritic module in TMS320C67136042, Wavelet Transformation Algorithm module, fault initiating are differentiated algoritic module, traveling wave fault phase selection algoritic module, polarization current fault traveling wave directional relay.
Functions in 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; precision is high; chip internal has 8 arithmetic elements; per secondly carry out 1,600,000,000 instructions, can meet 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) SPI Communication Control 6044:
TMS320C67136042 is by carrying out SPI serial communication with processor MCF52826062; send the fault information data such as fault direction, failure wave-recording to MCF52826062; so that MCF5282 carries out the follow-up operation such as the judgement of protection logic and communication, SPI communication speed reaches 5Mbtye/s.
3) SDRAM memory 6046:
Adopt 2 SDRAM memories that model is HY57V641620, form the random access memory of 32 2Mbyte bytes, for depositing algorithm desired data and fault recorder data.
4) FLASH memory 6048:
The FLASH program storage SST39LF of 512K byte, for depositing the program of algorithm.After powering on, TMS320C67136042 moves in the automatic RAM that program in FLASH memory 6048 is read in to TMS320C67136042 inside.
Algorithm routine flow chart in TMS320C67136042 as shown in Figure 7, this program Solidification is in FLASH memory, after powering on, TMS320C6713 automatically reads in the program in FLASH in the RAM of TMS320C6713 inside and moves, and the major function that this program completes has:
As shown in the flow chart on the left side of Fig. 7, the self check of high-speed digital signal process chip while normally moving, first carry out initialization (702), judge whether fixed value modification (704), in judged result for be in the situation that, carry out step (706), in judged result be no in the situation that, carry out step (708), revise definite value (706) and judged whether afterwards report (708), in judged result when being, send this report (710), after sending, judge whether the self check time arrives (712), if be also less than, rejudge and whether have fixed value modification, if arrive, carry out self check (714),
Continue as shown in the flow process on Fig. 7 the right, whether the real-time detection of TMS320C6713 has fault interrupting, in the time having fault interrupting, and read failure data (716);
The fault data reading is carried out to phase-model transformation (718);
Ask for Multiresolution Decomposition and the modulus maximum (720) thereof of wavelet transformation;
Whether Judging fault starts (722), if be not activated, fault interrupting processing finishes, if start, carries out the determining fault direction (724) of Fault Phase Selection and polarization current fault direction relay;
Whether failure judgement direction is forward fault (726), in the time that judged result is forward fault, fault message is sent to MCF5282 (728), troubleshooting EOI, in the time that judged result is not forward fault, troubleshooting EOI.
According to the flow process shown in Fig. 7, the function of each software module is as follows:
1) TMS320C6713 starts: after row ripple high-frequency orientation protector powers on, TMS320C6713 starts.
2) initialization module: the each register in TMS320C6713 inside is carried out to initialization, correlated variables and flag bit in protection algorithm are carried out to 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 TMS320C6713 chip can have fault interrupting to produce by Real-Time Monitoring, if there is fault interrupting to produce, forwards immediately fault interrupting handling procedure to.
5) the capable ripple of read failure data: TMS320C6713 reading current from dual port RAM and voltage traveling wave data, prepare troubleshooting.
6) phase-model transformation: popular three-phase electricity ripple and voltage traveling wave data are carried out respectively to triumphant human relations Bel conversion, be transformed into three Aerial mode components and 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) ask for Multiresolution Decomposition and the modulus maximum thereof of wavelet transformation:
The Multiresolution Decomposition schematic diagram of wavelet transformation as shown in Figure 8.Two decomposition formulas that enter 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 above formula (n) is the discrete sampling value point of current traveling wave or voltage traveling wave, h kand g ktwo to enter the bank of filters coefficient in 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 )
Current traveling wave signal is carried out to wavelet transformation Multiresolution Decomposition and ask for modulus maximum in sub-frequency space W2, W3, 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.
First voltage traveling wave modulus is pressed to formula (5) and extracts fault traveling wave component in voltage traveling wave:
u fm(n)＝u m(n)-2u m(n-N)+u m(n-2N) (5)
U in above formula m(n) be voltage traveling wave modulus value after 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.
By capable voltage failure ripple u fm(n) carry out the Multiresolution Decomposition of wavelet transformation, and ask for modulus maximum polarity in frequency space V12 (0～61.0Hz), thereby obtain the initial polarity of power frequency component in the capable ripple of voltage failure.
8) software of fault initiating is differentiated: according to the Singularity Detection theory of lipschitz signal, if transmission line malfunction starts, the modulus maximum of the wavelet modulus maxima of current traveling wave in W2, W3 and W4 space increases successively, and carries out corresponding consequent malfunction handling procedure.If high-frequency interferencing signal causes traveling-wave protection hardware-initiated, the modulus maximum of the modulus maximum of its wavelet transformation in W2, W3 and W4 space is not to increase successively, now exits immediately troubleshooting interrupt routine, returns to the main circulating program of TMS320C6713.
9) traveling wave fault phase selection module: form Fault Phase Selection module according to the wavelet modulus maxima of current traveling wave.As shown in Figure 9, groundwork flow process is the flow process of Fault Phase Selection algorithm:
First judge fault type:
In step 902, judge whether zero mold component of current traveling wave is zero;
If zero mold component of the capable ripple of fault after-current is not 0, is judged to be earth fault, otherwise is phase fault.
In step 906, if earth fault, then judge that in three electric current line mould wavelet modulus maximas, whether having a wavelet modulus maxima is 0, be 0 if there is a wavelet modulus maxima, be single-line to ground fault, otherwise be two phase ground short circuit.
Or not 904, and for phase fault, further ask for three absolute value maximum MMImax and absolute value minimum M MImin in electric current line mould wavelet modulus maxima.
In step 908, judge whether MMImax equals 2MMImin, if MMImax=2MMImin is judged to be line to line fault, otherwise be three-phase shortcircuit.
Further judge that according to fault type fault is separate:
The separate judgement of two-phase short-circuit fault:
If MMI α=MMI is γ, fault is separate: CA
If MMI β=MMI is γ, fault is separate: AB
If MMI α=MMI is β, fault is separate: BC
The separate judgement of three phase short circuit fault: fault is separate: ABC
The separate judgement of single-line to ground fault:
If MMI γ=0, fault is separate: A
If MMI β=0, fault is separate: B
If MMI α=0, 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 in MMIc:
MMImin＝min(abs(MMIa)，abs(MMIb)，abs(MMIc))
If MMImin=abs (MMIa), fault is separate: BC
If MMImin=abs (MMIb), fault is separate: CA
If MMImin=abs (MMIc), fault is separate: AB
10) polarization current fault traveling wave directional relay:
According to current traveling wave wavelet transformation Multiresolution Decomposition at the modulus maximum MMI in W2 space α, MMI β, the wavelet transformation Multiresolution Decomposition of MMI γ and the capable ripple of voltage failure is at the modulus maximum MMU in V12 space α, MMU β, MMU γ judges fault direction.The forward criterion of polarization current fault traveling wave directional relay and oppositely criterion are as shown in Figure 10 a and Figure 10 b:
As shown in Figure 10 a, positive direction fault: arbitrary line modulus current fault row mode maximum is contrary with the capable mode maximum of current failure polarity.
As 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
In the time that polarization current fault traveling wave directional relay is judged to be forward fault; TMS320C6713 is by carrying out SPI serial communication with processor MCF5282; send the data such as fault direction, failure wave-recording to MCF5282, so that MCF5282 carries out the follow-up operation such as the judgement of protection logic and communication.
Three, the judgement of protection logic and input/output interface circuit 606
Protection logic judge and input/output interface circuit 606 take microprocessor MCF52826062 as core, 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, be integrated in the row ripple directional pilot protection logic evaluation algorithm of MCF5282 inside.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 conventional peripheral functionality module 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 interfaces (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 SPI communication, obtain the results such as fault direction, fault are separate, failure wave-recording.
3) ethernet control module 6066: by the fault direction of this side of circuit with fault is separate etc. that fault message transfers to transmission line to skidding ripple directional pilot protection device by ethernet communication; Receive the fault message that skidding ripple directional pilot protection device is transferred to this skidding ripple directional pilot protection 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 judgement.
5) switching value output module 60612: according to the result of determination of row ripple directional pilot protection, send switch trip order and relevant warning information in the time of troubles inside the sample space.
6) CAN communication module 60610: the troubleshooting dependent failure report information of row ripple directional pilot protection is transferred to monitor board, to realize the Storage & Display to Trouble Report.
7) 232 communication modules 6064: the on-line debugging of realizing ultrahigh speed row ripple direction protection plate.
8) in MCF5282 row ripple directional pilot protection logic evaluation algorithm flow process as shown in figure 11, the flow chart on the left side is the self check of MCF5282 while normally moving, the right is the flow process judging.Pilot direction protection is by allowing signal to form trip protection logic, MCF5282 receives by SPI communicating interrupt this side fault message that DSP transmits, 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 the fault message (1106) to skidding ripple high-frequency orientation protector, judge and wait for whether time delay arrives setting value (1108), if do not receive the fault message to skidding ripple high-frequency orientation protector in appointment time delay, be judged to be protected circuit external fault, if receive the forward fault message to skidding ripple high-frequency orientation protector, be judged to be protected circuit internal fault, this skidding ripple high-frequency orientation protector determines whether tripping operation and trip separate (1110) in connection with this side intake information, finally send Trouble Report and failure wave-recording to monitor board.
(6) monitor board 24
The Main Function 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 in MCF5282, upload Trouble Report and failure wave-recording module, pass down definite value module, equipment debugging module.
As shown in figure 12, each functions of modules is as follows for the structure of the hardware of this monitor board 24:
1) microprocessor MCF52821202: the microprocessor that this monitor board adopts is 32 embedded micro-chip processor MCF5282 that Freescale company produces, this processor is core calculations and the control element of this monitor board, and all functions of this plate all complete by this chip and the program module being integrated in wherein.
2) 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) SDRAM memory 1216: this monitor board has adopted the SDRAM of two 16 8M bytes to form the memory headroom of 32 16M bytes.SDRAM model is MT48LC4M16A2-75, for store M CF5282 program operation intermediate data.
4) clock module 1210: this use 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, controls the demonstration of liquid crystal display screen for one, is responsible for output input Debugging message for one.
6) ethernet module 1208: this monitor board completes the distant place transmission of data by ethernet module 1208, ethernet physical layer chip is selected LXT971ALC, and Ethernet isolating transformer is selected HR601680, and Ethernet physical interface adopts RJ45 mouth.
7) CAN communication module 1206: this monitor board completes and the information interaction of high-speed data acquisition and ultrahigh speed traveling-wave protection plate by CAN communication module 1206, CAN communication chip adopts CTM8251AT.
8) be integrated in the flush bonding module 1300 in MCF5282: the structure chart of flush bonding module as shown in figure 13.
This monitor board adopts embedded uClinux operating system, complete the control of hardware device, realize various functions, comprising: liquid crystal display, Keyboard Control, patrol and examine, equipment debugging, pass definite value down, upload Trouble Report and failure wave-recording, the concrete effect of each functional module is as follows:
LCD MODULE 1302: circuit current/voltage value, Trouble Report, failure wave-recording waveform, protection definite value in real time.
Keyboard operation module 1304: realize change protection definite value, check Trouble Report and failure wave-recording waveform, carry out machine debugging.
Polling module 1306: power on after 1 minute at protective device, monitor board 24 is patrolled and examined high-speed data acquisition and ultrahigh speed traveling-wave protection plate for every 10 seconds once by CAN communication.If patrol and examine the undesired warning information that sends.
Upload Trouble Report and failure wave-recording module 1312: receive Trouble Report and the fault recorder data of high-speed data acquisition and ultrahigh speed traveling-wave protection plate 23 by CAN communication, and be kept in FLASH memory.
Under pass definite value module 1310: user is reset to protection definite value, sends high-speed data acquisition and ultrahigh speed traveling-wave protection plate to by CAN communication.
Equipment debugging module 1308: user can debug traveling-wave protection device by the Man Machine Interface such as keyboard, liquid crystal.
(7) exit relay plate 25
In exit relay plate, there are three-phase outlet tripping relay, closing relay, alarm relay etc.Realize the functions such as the tripping operation outlet, closing operation, alarm of ultrahigh speed row ripple high-frequency orientation protector.
2, ethernet communication system
Ethernet communication system can comprise: traveling-wave protection device Ethernet light mouth; Multiplex interface device; SDH/PDH optical transmission device and SDH/PDH optical fiber communication network, as shown in Figure 14 b, functions is as follows:
Traveling-wave protection device Ethernet light mouth: ultrahigh speed row ripple high-frequency orientation protector adopts single mode HFBR5203 light mouth; the fault message signal of telecommunication of this side traveling-wave protection is converted to light signal; the ultrahigh speed row ripple high-frequency orientation protector that is sent to offside through optical fiber communication network, the light signal simultaneously offside traveling-wave protection being sent through optical networking is converted to the signal of telecommunication.
Multiplexing conversion device C1 and C2: realize the conversion of light mouth and standard electric interface G703E1, so that signal enters SDH/PDH, optical transmission device transmits.
SDH/PDH optical transmission device D1 and D2: by the signal of telecommunication after multiplexing conversion device conversion, convert light signal to through optical transmitter and receiver, be sent to offside SDH/PDH optical transmission device through SDH/PDH optical fiber communication network.
The Ethernet Fiber Optical Communication System of row ripple directional pilot protection can adopt special optic fibre communication, as shown in Figure 14 a, also can adopt the communication of multiplexing (2M) SDH/PDH optical fiber communication network, as shown in Figure 14 b.
In other words, in the situation that adopting special optic fibre communication, ethernet communication device comprises: traveling-wave protection device Ethernet light mouth, for the fault message signal of telecommunication of the traveling-wave protection device of local terminal is converted to fault message light signal, be sent to the traveling-wave protection device of the other end of ultra-high-tension power transmission line through special optic fibre communication network, receive other fault message light signals that send through 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;
In the situation that adopting SDH/PDH optical fiber communication, ethernet communication device comprises: traveling-wave protection device Ethernet light mouth, multiplex interface device, SDH/PDH optical transmission device, wherein,
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 fault message light signal to the fault message signal of telecommunication;
SDH/PDH optical transmission device, is connected to multiplex interface device, converts the described information signal of telecommunication after the conversion of multiplex interface device to information light signal, is sent to the SDH/PDH optical transmission device of the other end through SDH/PDH optical fiber communication network.
After the composition 26S Proteasome Structure and Function of the each components and parts of the present invention that describe in detail, further illustrate technical scheme of the present invention in conjunction with example below.
The course of work of accompanying drawings technical scheme of the present invention:
1) suppose that protected circuit 1 inside breaks down, as shown in Figure 4;
2) fault point is by the capable ripple of current failure and the capable ripple of voltage failure that produce to circuit two lateral movements.
3) secondary side is arrived in the capable primary side current ripple progress of disease by the current transformer 2,10 of circuit both sides; Secondary side is arrived in the progress of disease of primary side voltage traveling wave by capacitance type potential transformer 3,11.
4) in ultrahigh speed row ripple high- frequency orientation protector 6 and 14, the precision current converter in precision current converter and accurate voltage converter plate 22 and accurate voltage converter are further transformed into current traveling wave and voltage traveling wave the weak electric signal of positive and negative 2.5 volts.This signal is sent to ultrahigh speed traveling-wave protection plate 23 through motherboard 20.
5), in ultrahigh speed traveling-wave protection plate 23, voltage traveling wave and current traveling wave signal, behind second order active low-pass filter loop, after multicircuit switch and A/D high speed (500kHz) digital translation, become digital signal and are kept in 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 fault initiating signal, starts TMS320C6713 and enters exception handles.
6) TMS320C6713 enters after exception handles, first read failure data from dual port RAM, voltage traveling wave and current traveling wave fault data are carried out to phase-model transformation, then carry out the Multiresolution Decomposition of wavelet transformation, and ask for current traveling wave at frequency space W2{62.5,125kHz}, W3{31.25,62.5kHz}, W4{15.625, the modulus maximum in 31.25kHz}.According to the Singularity Detection theory of lipschitz signal, carry out the software of fault initiating and differentiate, if the traveling-wave protection that interference signal causes starts, row ripple direction protection exits exception handles immediately; If the traveling-wave protection that line fault causes starts, protective device enters traveling wave fault phase selection and polarization current fault traveling wave directional relay algorithm routine.If reverse fault, row ripple direction protection exits exception handles immediately; If forward fault, the SPI communication of TMS320C6713 startup and MCF5282, sends dependent failure information to MCF5282, to carry out consequent malfunction handling procedure.
7) fault message that MCF5282 transmits TMS320C6713 is at once by Ethernet optical fiber communication network, fault message is sent to the ultrahigh speed row ripple high-frequency orientation protector of offside, detect simultaneously and whether receive the fault message that the ultrahigh speed row ripple high-frequency orientation protector of offside transmits by Ethernet, if do not receive the fault message that the ultrahigh speed row ripple high-frequency orientation protector of offside transmits in the wait time delay of setting, 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, row ripple direction protection carries out logic judgement in conjunction with the intake information of this side, determines whether the separate of tripping operation and tripping operation.Trip signal drives the tripping relay on exit relay plate 25 by the microprocessor MCF5282 amount of outputing, and sends trip signal.MCF5282 is finally sent to monitor board 24 by Trouble Report and Fault Recorder Information by CAN communication.
8) monitor board 24 receives Trouble Report and the failure wave-recording that ultrahigh speed traveling-wave protection plate is come by CAN communication transfer; on the one hand fault message is presented on liquid crystal display screen, Trouble Report and fault recorder data is sent to monitoring system of electric substation and control centre's supervisory control system by Ethernet simultaneously.
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 technology 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 form a kind ofly based on polarization current fault traveling wave directional relay, and utilize Ethernet optical fiber communication technology to form directional pilot protection system.This ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection system has superfast performance (fast motion speed about 10ms); and be not subject to that current transformer is saturated to be affected; be not subject to the impact that capacitance type potential transformer can not the wide band voltage failure travelling wave signal of the progress of disease; be not subject to the impact of power system oscillation; be not subject to the impact of transmission line charging capacitor electric current; be not subject to the impact of transmission line series capacitor and shunt reactor; be not subject to the impact 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 ultrahigh speed row ripple directional pilot protection system, the ethernet communication time is less than 5ms;
4, the action outlet time of a whole set of protection is less than 15ms;
5, can record protection action failure 30 groups of report and fault recorder datas.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (4)

1. a ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, is characterized in that, is arranged on 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 respectively as the second voltage for described traveling-wave protection device and electric current from the first voltage and current of described ultra-high-tension power transmission line;
Described traveling-wave protection device, be connected to described watch-dog, receive second voltage and electric current from described converter, described second voltage and electric current are processed to determine to 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 receive other fault messages from outside, by described traveling-wave protection device determine described fault message and compare from described other fault messages of outside, and determine whether tripping operation and trip separate according to comparative result, described fault message comprise fault direction and fault separate,
Described watch-dog, is connected to described traveling-wave protection device, shows and stores the described fault message that described traveling-wave protection device transmits, and monitors described traveling-wave protection device, and described fault message is sent to outside according to the presupposed information of input; 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;
Described watch-dog comprises:
Microprocessor, be connected to a CAN communication module, receive from the fault message of described traveling-wave protection device with from the input message of Keysheet module, the input message of described Keysheet module is transferred to described traveling-wave protection device, control the displaying contents of LCD MODULE;
A described CAN communication module, is connected to described microprocessor, realizes the information interaction with described traveling-wave protection device;
Ethernet communication module, receives the described fault message from described traveling-wave protection device, and described transmitting fault information is extremely outside;
Serial port module, is connected to described microprocessor, transmits described displaying contents and debug signal;
LCD MODULE, is connected to described microprocessor, shows from the described displaying contents of described microprocessor and the information inputted by described Keysheet module;
Described Keysheet module, inputs outside information;
The one FLASH memory, for storing control program and the described fault message of described microprocessor; And
The one SDAM memory, for storing the intermediate data of described microprocessor processes;
Wherein,
Described microprocessor also comprises:
Polling module, is connected to a described CAN communication module, patrols and examines described traveling-wave protection device by a described CAN communication module timing, sends warning information in the time patrolling and examining abnormal state;
Upper transmission module, is connected to a described CAN communication module, receives the described fault message from described traveling-wave protection device, and be kept in described FLASH memory by a described CAN communication module;
Lower transmission module, is connected to a described CAN communication module, and protection definite value user being reset by a described CAN communication module sends described traveling-wave protection device to;
Described traveling-wave protection device comprises: row wave datum acquisition module, row wave datum processing module and input information output module, wherein,
Described row wave datum acquisition module, comprising: 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 row wave simulation signal from described ultra-high-tension power transmission line, and described row wave simulation signal is carried out to filtering, and described row wave simulation 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, extracts the high-frequency signal row ripple for the signal from the output of described second order active low-pass filter module;
The hardware-initiated module of described protection, receive the described high-frequency signal from the passive bandpass filtering modules block of described second order, and determine whether described high-frequency signal meets predetermined condition, meets after described predetermined condition at described high-frequency signal, send enabling signal to described kernel control module;
Described multicircuit switch module, is connected to described second order active low-pass filter module, for export successively described row wave simulation signal to A/D modular converter 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 row wave simulation signal is carried out to A/D conversion, and export transformation result to dual port RAM module;
Described dual port RAM module, has two groups of data/address buss and two group address buses, for store the described transformation result from described A/D modular converter under the control of described kernel control module, and is read described transformation result by described row wave datum processing module; And
Described kernel control module, receive the described enabling signal from the hardware-initiated module of described protection, control described multicircuit switch, described A/D converter and described dual port RAM, and realize the decoding to described address bus and described data/address bus, and send interrupt signal to described row wave datum processing module;
Described row wave datum processing module, receive the interrupt signal from described kernel control module, read described transformation result from described dual port RAM, described transformation result is processed to obtain fault message, wherein, described fault message comprises that the fault direction of described ultra-high-tension power transmission line, fault are separate;
Input information output module, comprising: message processing module, ethernet control module, switching input module, switching value output module, wherein,
Described message processing module, receive the fault message from described row wave datum processing module, receive other fault messages from the opposite side of described ultra-high-tension power transmission line by described ethernet control module, and receive from the switching value information of described switching input module, according to the fault message from described row 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, by the described fault message from described message processing module, send to the row 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 row 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 input information that described traveling-wave protection device is used is 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, receives and sends to described watch-dog from the Trouble Report information of described message processing module; And
RS232 communication module, receives the debug signal that described traveling-wave protection device is debugged from described watch-dog.
2. ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device according to claim 1; it is characterized in that; described row wave datum processing module comprises: phase-model transformation module, wavelet transformation module, fault initiating discrimination module, traveling wave fault phase selection module, the capable ripple directional relay of polarity comparison expression module, wherein
Described phase-model transformation module, obtains modulus row wave datum to carry out triumphant human relations Bel conversion from the described transformation result of described dual port RAM;
Described wavelet transformation module, receive the described modulus row wave datum from described phase-model transformation module, and described modulus row wave datum is carried out to wavelet transformation obtain the polarity of 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, receive the described modulus maximum from described wavelet transformation module, determine whether to cause for line fault the described startup of the hardware-initiated module of described protection according to the Singularity Detection theory of Lipschitz signal, and only in the time being defined as described line fault and causing the described startup of the hardware-initiated module of described protection, start described traveling wave fault phase selection module and described polarity row ripple directional relay module relatively time;
Described traveling wave fault phase selection module, receives from the described modulus maximum of described wavelet transformation module, and according to described modulus maximum confirm the fault type of described circuit and fault separate;
The capable ripple directional relay of described polarity comparison expression module, receive the wave head polarity from the fault initial row ripple of described wavelet transformation module, and confirm the fault direction of described circuit according to the wave head polarity of described fault initial row ripple, and be confirmed whether to send described fault direction and described fault is separate to described input information output module according to the fault direction on described circuit.
3. ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device according to claim 2, is characterized in that, described row wave datum processing module also comprises:
The 2nd SDRAM memory, processes required data for storing described row wave datum processing module;
The 2nd FLASH memory, the algorithm routine adopting for storing described row wave datum processing module; And
SPI communication control module, makes described row wave datum processing module and described input information output module carry out SPI communication, and described fault message is sent to described input information output module.
4. a ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection system, it is characterized in that, be provided with the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device as claimed any one in claims 1 to 3 in the first side of ultra-high-tension power transmission line, the first voltage transformer, the first current transformer, the first circuit breaker and the first ethernet communication device, and be provided with the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device as claimed any one in claims 1 to 3 in the second side of described ultra-high-tension power transmission line, second voltage instrument transformer, the second current transformer, the second circuit breaker and the second ethernet communication device, wherein,
Described the first voltage transformer and described second voltage instrument transformer, by the voltage transitions on described ultra-high-tension power transmission line for providing respectively to the voltage of described the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device and described the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device;
Described the first current transformer and described the second current transformer, by the current conversion on described ultra-high-tension power transmission line for providing respectively to the electric current of described the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device and described the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device;
Described the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, from the voltage and current from described the first voltage transformer and described the first current transformer, obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the first side of described ultra-high-tension power transmission line and the capable ripple of voltage failure, and determine the fault direction of described ultra-high-tension power transmission line the 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 the first side and the capable ripple of voltage failure, and by described ethernet communication device, receive other fault messages from the described second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of the second side, according to described other fault messages of the described fault message of the first side and the second side determine the fault type of described ultra-high-tension power transmission line and fault separate, and determine whether to send trip signal to the first exit relay,
Described the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, from the voltage and current from described second voltage instrument transformer and described the second current transformer, obtain respectively the initial polarity of power frequency component in the wave head polarity of current failure initial row ripple of the second side of described ultra-high-tension power transmission line and the capable ripple of voltage failure, and determine the fault direction of described ultra-high-tension power transmission line the 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 the second side and the capable ripple of voltage failure, and by described ethernet communication device, receive other fault messages from the described first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device of the first side, according to described other fault messages of the described fault message of the second side and the first side determine the fault type of described ultra-high-tension power transmission line and fault separate, and determine whether to send trip signal to the second exit relay,
Described the first ethernet communication device, by optical fiber communication network, the described fault message of described ultra-high-tension power transmission line the first side is sent to the described second ethernet communication device of the second side of described ultra-high-tension power transmission line, realize described fault message mutual at described ultra-high-tension power transmission line two ends;
Described the second ethernet communication device, sends the described fault message of described ultra-high-tension power transmission line the second side to by optical fiber communication network the described first ethernet communication device of described ultra-high-tension power transmission line the first side;
Described the first circuit breaker, is arranged on described ultra-high-tension power transmission line, receives the trip signal from described the first ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, disconnects or closed described ultra-high-tension power transmission line; And
Described the second circuit breaker, is arranged on described ultra-high-tension power transmission line, receives the trip signal from described the second ultra-high-tension power transmission line ultrahigh speed row ripple directional pilot protection device, disconnects or closed described ultra-high-tension power transmission line.
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