CN100507580C - Electronic type transformer high voltage side redundant backup circuit and failure detection method - Google Patents
Electronic type transformer high voltage side redundant backup circuit and failure detection method Download PDFInfo
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- CN100507580C CN100507580C CNB2007101193849A CN200710119384A CN100507580C CN 100507580 C CN100507580 C CN 100507580C CN B2007101193849 A CNB2007101193849 A CN B2007101193849A CN 200710119384 A CN200710119384 A CN 200710119384A CN 100507580 C CN100507580 C CN 100507580C
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Abstract
The utility model discloses a redundancy backup circuit at the high-voltage side of electronic transducer , which is characterized in that: the transducer high-voltage side circuit is added with a standby controller connected in parallel with a main controller and a corresponding multi-path gating circuit. When the transducer is in operation, the stand-by controller hibernates, and main controller completes all the functions of high-voltage side circuit. If the low-voltage side circuit judges that the high-voltage side circuit has failure possibility, the stand-by controller arranged on the high-voltage side is awakened. The stand-by controller sends a reset command to the main controller and conduct diagnostic tests over the high-voltage side circuits. If the main controller confirms the presence of faults, the current work of the main controller is switched to the stand-by controller to maintain the normal work of the transducer and overcome the transducer failure as a result of the main controller failure in high-voltage side circuit, thus improving the reliability of the transformer . The utility model also discloses a fault detection method based on the circuit for the provision of fault location information for the overhaul of transducer equipment, which facilitates the online maintenance of the equipment.
Description
Technical field
The present invention relates to the mutual inductor technology in power system automation technology field, particularly relate to a kind of fallback circuit and fault detection method of electronic mutual inductor.
Background technology
Electric power mutual-inductor is one of electrical equipment important in the electric system, and accurate measurement, electric energy metrical, relay protection, system monitoring and the systematic analysis etc. of current/voltage in the electric system are all had important effect.At present widely usedly in the electric system remain traditional electromagnetic type current/voltage mutual inductor, continuous development along with electric system, improving constantly of line voltage grade, inherent shortcoming problems such as Insulation Problems, magnetic saturation problem, the dynamic range of traditional electrical magnetic-type current/voltage mutual inductor is little become increasingly conspicuous, thereby have proposed the electronic mutual inductor technology.
Electronic mutual inductor is used optical fiber technology, has good insulating property reliably, adapts to modern power systems robotization, digitized developing direction.Electronic mutual inductor is divided into two kinds of active formula and passive types according to high-pressure side sensor dissimilar.Active electronic transformer high-pressure side sensor adopts ripe sensing technology, and the output analog electrical signal is sent to low-pressure side by optical fiber again after related circuit is processed into light signal.Because high-pressure side circuit long-term work is under abominable electromagnetic interference environment, will cause the whole electronic mutual inductor can't operate as normal in case break down, and be difficult under charged situation, keep in repair and change, therefore, the reliability design of high-pressure side circuit is a key link of guaranteeing the electronic mutual inductor performance.
In the design of existing electronic type transformer high voltage side circuit, what generally adopt is the mode of utilizing the custom integrated circuit design to realize, as: utilize multi channel selecting and high-precision adc spare to realize the time division multiplex of multiple signals, be sent to the mode of low-pressure side then, the high-pressure side circuit of this mode is simple, but function singleness, and dirigibility is relatively poor; The implementation that adopts singlechip technology is also arranged in the circuit design of high-pressure side, and this mode can realize complicated functions such as error compensation, and has the data mode that can be provided with flexibly between the high/low pressure side and the characteristics of highly versatile.But no matter be the implementation that adopts integrated circuit or adopt single-chip microcomputer, all have the defective of mutual inductor weak point in serviceable life and system reliability difference.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of electronic type transformer high voltage side redundant backup circuit based on the single-chip microcomputer mode, to improve the reliability of electronic mutual inductor.
Another object of the present invention is to provide a kind of fault detection method of aforementioned fallback circuit, in order to the accurate positioning circuit fault of plant maintenance personnel.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention discloses a kind of electronic type transformer high voltage side redundant backup circuit, comprise master controller, signal measurement unit, the signal condition unit, reference voltage source, electrooptic switching element, this circuit comprises that also the steering order that is used to receive the low-pressure side treatment circuit and the analog acquisition conversion of signals that will nurse one's health the unit from signal are the preparation controller of digital signal, being used for will be through the simulating signal gating of conditioning to the first multi channel selecting unit of the mould/number conversion Input Address of master controller or preparation controller, is used for master controller is carried out digital signal gating after mould/number conversion to the second multi channel selecting unit of electrooptic switching element; Described signal measurement unit, signal condition unit and the first multi channel selecting unit link to each other successively, described reference voltage source links to each other with the first multi channel selecting unit, described master controller and preparation controller are parallel between the first multi channel selecting unit and the second multi channel selecting unit, and described electrooptic switching element links to each other with master controller, preparation controller and the second multi channel selecting unit respectively.
Wherein, described low-pressure side treatment circuit is the inner low-pressure side information process unit that comprises single-chip microcomputer and function corresponding software, be used on high-tension side active/standby controller sending controling instruction, reception is from high-tension side active/standby controller Serial Peripheral Interface (SPI) data, and these data delivered to the monitoring equipment that links to each other with described low-pressure side treatment circuit by the universal asynchronous receiving-transmitting interface carry out data processing.
Wherein, electrooptic switching element links to each other by two-way optical fiber with photoelectric conversion unit in the lower-voltage circuit in the high-pressure side circuit of described mutual inductor, constitutes the two-way optical fiber transport channel of active and standby usefulness each other.
In the such scheme, when described master controller breaks down, described low-pressure side treatment circuit will wake preparation controller up, and make described preparation controller take over the current work of master controller after the fault of confirming master controller.
The invention also discloses a kind of fault detection method based on described redundant backup circuit, this method comprises the steps:
The running status of a, low-pressure side treatment circuit monitoring high-pressure side circuit exists and activates preparation controller when unusual detecting the high-pressure side circuit;
B, described preparation controller reset to master controller, and can master controller carry out the repertoire of high-pressure side circuit after the judgement of low-pressure side treatment circuit resetted, and then returns step a when energy;
C, low-pressure side treatment circuit are tested preparation controller, enable the Serial Peripheral Interface (SPI) of preparation controller control master controller, send test data by Serial Peripheral Interface (SPI) to master controller, if test result proves then that normally the optical-fibre communications passage is normal, otherwise, with switching services to standby optical-fibre communications passage, and standby optical-fibre communications passage tested once more, if still unusual, then standby optical-fibre communications channel failure, otherwise execution in step c;
The output signal of d, preparation controller shutoff signal conditioning unit, the normal voltage signal access master controller of reference voltage source is analyzed, and analysis result is sent to the low-pressure side treatment circuit, if display result normally then fault from high-tension side signal measurement unit, otherwise there is fault in master controller inside; The low-pressure side treatment circuit is controlled the computing that master controller is finished the built-in system program by sending test instruction by preparation controller, if test result is still unusual, then there is fault in the system program of master controller.
Described step a mesohigh lateral circuit exists unusual, is meant that signal collected measuring result error that low-pressure side records exceeds the situation of the error range that system can bear.
There is fault in master controller inside among the described step c, is meant that data acquisition function, test data analysis processing capacity or the test data transmission channel of test occurs unusual.
The inventive method has following advantage:
1) redundant backup circuit of the present invention adopts in the circuit of the high-pressure side of electronic mutual inductor that two single-chip microcomputers are active and standby each other uses work, the work that it can be responsible for when wherein a slice single-chip microcomputer breaks down be switched on another sheet single-chip microcomputer, thereby has improved the reliability of the electronic mutual inductor of working under rugged surroundings.
2) redundant backup circuit of the present invention has been set up one tunnel optical fiber transport channel between the high-pressure side of mutual inductor circuit and lower-voltage circuit, can be with the SPI data when one tunnel transmission channel breaks down therein auto switching strengthened the reliability of mutual inductor to another road transmission.
3) redundant backup circuit of the present invention is by operating in the software effect of low-pressure side treatment circuit, make preparation controller participate in the process fault detection of this fallback circuit, can obtain the accurate localization of fault information of redundant backup circuit according to this method of testing, for safeguarding and repair apparatus provides convenience.
Description of drawings
Fig. 1 is a circuit system structure synoptic diagram of the present invention;
Fig. 2 is the basic flow sheet of high-pressure side of the present invention circuit test diagnosis;
Fig. 3 surveys synoptic diagram for the online accent of electronic mutual inductor package of the present invention.
Embodiment
Core concept of the present invention is: by increase a single-chip microcomputer in parallel with former single-chip microcomputer in the electronic type transformer high voltage side circuit, increase by the first multi channel selecting unit and the second multi channel selecting unit simultaneously, to wherein when system moves, a slice single-chip microcomputer is made as main with normal operating conditions, carry out the repertoire of high-pressure side circuit, another single-chip microcomputer is made as standby, promptly keeps dormancy; Suppose that former single-chip microcomputer is made as main using, newly-increased single-chip microcomputer is standby, when mutual inductor is carried out the basic function of high-pressure side circuit, when the low-pressure side treatment circuit is judged the high-pressure side circuit and may be broken down, wake the standby single-chip microcomputer in high-pressure side up, send reset instruction to main with single-chip microcomputer by standby single-chip microcomputer, and the high-pressure side circuit carried out testing and diagnosing, there is fault if confirm the master with single-chip microcomputer, then will lead automatically to switch to standby single-chip microcomputer and not interrupt with the work that keeps mutual inductor with the work of single-chip microcomputer by the low-pressure side treatment circuit, avoid the high-pressure side circuit to cause the inoperable defective of whole mutual inductor because of a certain single-chip microcomputer breaks down, thereby guaranteed the reliability of mutual inductor.
Below in conjunction with the drawings and specific embodiments the present invention is further described.
Fig. 1 is a circuit system structure synoptic diagram of the present invention, as shown in Figure 1, the electronic mutual inductor system is divided into high-pressure side and low-pressure side two parts, wherein, the high-pressure side circuit comprises: signal measurement unit 100, signal condition unit 101, reference voltage source 102, the first multi channel selecting unit 103, the second multi channel selecting unit 104, electrooptic switching element 105, photoelectric conversion unit 108 and single-chip microcomputer 1, single-chip microcomputer 2; Low-pressure side comprises monitoring equipments such as photoelectric conversion unit 106, electrooptic switching element 107 and low-pressure side treatment circuit 109 and corresponding host computer.
In the circuit of described high-pressure side, signal measurement unit 100, the signal condition unit 101 and the first multi channel selecting unit 103 link to each other successively, reference voltage source 102 links to each other with the first multi channel selecting unit 103, single-chip microcomputer 1 and single-chip microcomputer 2 are parallel between the first multi channel selecting unit 103 and the second multi channel selecting unit 104, electrooptic switching element 105 links to each other with the second multi channel selecting unit 104, on high-tension side electrooptic switching element 105 links to each other with the photoelectric conversion unit 106 of low-pressure side treatment circuit 109 by optical fiber, the electrooptic switching element 107 of low-pressure side treatment circuit 109 links to each other with on high-tension side photoelectric conversion unit 108 by optical fiber, wherein photoelectric conversion unit 108 respectively with single-chip microcomputer 1, single-chip microcomputer 2 links to each other in the universal asynchronous serial mode.
With reference to Fig. 1, the Action Specification of above-mentioned each functional unit of the present invention is as follows:
Signal measurement unit 100: utilize Rogowski coil and inner sensor circuit to obtain the electro-induction signal of tested high voltage bus electric current, utilize electric resistance partial pressure and inner sensor circuit to obtain the electro-induction signal of tested high voltage bus voltage.
Signal condition unit 101: the electronic circuit by inside is nursed one's health the electro-induction signal that records, and makes it to be converted in the amplitude range of the simulating signal that single-chip microcomputer can gather.
Reference voltage source 102: provide test required canonical reference magnitude of voltage for single-chip microcomputer 1 and single-chip microcomputer 2 by the first multi channel selecting unit 103.
The first multi channel selecting unit 103: by receiving the control signal of single-chip microcomputer 1 or single-chip microcomputer 2, change the input port address with what system recorded through the signal input single-chip microcomputer 1 of conditioning or the analog/digital (A/D) of single-chip microcomputer 2, gather to cooperate single-chip microcomputer 1 or 2 pairs of data of single-chip microcomputer.
Single-chip microcomputer 1 and single-chip microcomputer 2: the analog signal conversion that the system of finishing records is the work of digital signal, and reception carries out corresponding action from the steering order of low-pressure side treatment circuit 109 and matching program is finished function corresponding.
The second multi channel selecting unit 104: receive the steering order of single-chip microcomputer 1 or single-chip microcomputer 2, the digital signal after suitable Serial Peripheral Interface (SPI) (SPI) output channel of selection master controller is changed A/D is sent to photoelectric conversion unit 106 and low-pressure side treatment circuit 109 by electrooptic switching element 105.
Electrooptic switching element 105 and photoelectric conversion unit 106: connect with two-way optical fiber between the two, constitute the two-way optical fiber transport channel of active and standby usefulness each other, electrooptic switching element 105 wherein will change the photoelectric conversion unit 106 of optical signal transmission to low-pressure side from the electric signal of the on high-tension side SPI of containing data into, and photoelectric conversion unit 106 is converted to the electric signal that contains the SPI data with light signal and is transferred to low-pressure side treatment circuit 109; The effect of the two-way optical fiber transport channel of active and standby usefulness each other is: professional auto switching to another road transmission channel can be worked on when wherein one tunnel optical fiber transport channel breaks down, interruptedly not receive the data that the high-pressure side sends to keep low-pressure side.
Electrooptic switching element 107 and photoelectric conversion unit 108: connect with simple optical fiber between the two, constitute low-pressure side treatment circuit 109 passages on high-tension side single-chip microcomputer sending controling instruction, electrooptic switching element 107 wherein will change optical signal transmission from the electric signal that contains steering order of low-pressure side into on high-tension side photoelectric conversion unit 108, by photoelectric conversion unit 108 light signal will be converted to the electric signal that contains steering order again and send on high-tension side single-chip microcomputer 1 and single-chip microcomputer 2 to.
Low-pressure side treatment circuit 109: be the low-pressure side information process unit that a kind of inside comprises single-chip microcomputer and function corresponding software, its by the single-chip microcomputer in the lower-voltage circuit on high-tension side single-chip microcomputer sending controling instruction, reception is from high-tension side SPI data, and these data delivered to the host computer that is attached thereto by universal asynchronous receiving-transmitting (UART) interface carry out data processing; Described host computer is meant a kind of centralized management monitoring equipment towards the management level user.
Hypothesis serves as that the master uses, single-chip microcomputer 2 is the standby concrete operational process of describing this Circuits System with single-chip microcomputer 1 below:
Step 1: after the electronic type transformer high voltage side circuit powers on, single-chip microcomputer 1 and single-chip microcomputer 2 are at first carried out initialization procedure, single-chip microcomputer 1 enters the main state of using afterwards, it is dormant state that single-chip microcomputer 2 enters standby, electronic mutual inductor is in normal operating condition, is carried out the function of high-pressure side circuit this moment by single-chip microcomputer 1.
The function of described execution high-pressure side circuit is meant signals collecting, signal analysis and processing, electric light conversion and the signal that the collects Serial Peripheral Interface (SPI) (SPI) by Optical Fiber Transmission is sent to low-pressure side.
Step 2: occur just starting the diagnostic work of high-pressure side circuit unusually when low-pressure side treatment circuit 109 determines the electronic mutual inductor running status; Lower-voltage circuit sends instruction and wakes standby single-chip microcomputer up, standby single-chip microcomputer at first sends (RESET) signal that resets to the master with single-chip microcomputer and carries out reset operation, send data by the UART interface then and test main SPI respectively with single-chip microcomputer, the arithmetic capability of analog to digital conversion (A/D) interface and program, with the main communication of check respectively with single-chip microcomputer, the performance of sensor and main internal arithmetic ability with single-chip microcomputer, thereby comprehensively judge main duty with single-chip microcomputer, when judged result has confirmed that there is fault in the master with single-chip microcomputer, the low-pressure side treatment circuit is to the SPI of standby single-chip microcomputer, A/D interface and sequential operation ability are tested, judge the state of standby single-chip microcomputer, and carry out the work for inspection before active and standby single-chip microcomputer switches.
Described electronic mutual inductor running status occurs unusual, and the measuring result error that is meant signal exceeds the situation of the error range that system can bear.
There is fault in described master with single-chip microcomputer, is meant that data acquisition function, test data analysis processing capacity or the test data transmission channel of test occurs unusual.
Step 3: the main work with single-chip microcomputer in high-pressure side is switched to standby single-chip microcomputer, finished work such as signals collecting, modulate circuit, communicating circuit by standby single-chip microcomputer, the master enters dormant state with single-chip microcomputer.
Above-mentionedly be the general process of electronic mutual inductor of the present invention when normally moving, describe high-pressure side circuit in step 2～step 3 below in detail and the testing and diagnosing process that to carry out when unusual and the reversed process of active and standby controller occur.
Fig. 2 is the basic flow sheet of diagnosis of high-pressure side of the present invention circuit test and active and standby handoff procedure, and as shown in Figure 2, the present invention is according to the fault detection method of implementing on the circuit base shown in Figure 1, and this method comprises the steps:
Step 201: the high-pressure side circuit is in when operation, judges the high-pressure side circuit when low-pressure side treatment circuit 109 and may exist when unusual, promptly stops main collection of simulant signal and A/D translation function with single-chip microcomputer, and carries out the hardware/software reset operation to main with single-chip microcomputer; Restart the A/D conversion work afterwards,, then continue the high-pressure side circuit is carried out the test of following one-period if the phenomenon of circuit abnormality is eliminated, otherwise, next step carried out.
Step 202: send instruction by low-pressure side treatment circuit 109 and wake standby single-chip microcomputer up, standby single-chip microcomputer after being waken up at first resets with single-chip microcomputer to main with the reset instruction of single-chip microcomputer transmission hardware/software to main, and attempt once more by main function with single-chip microcomputer execution high-pressure side circuit, if being restored, the function of high-pressure side circuit then continues to carry out with single-chip microcomputer the function of high-pressure side circuit by this master, if still can not recover, then need further carry out following processing: at first, standby Single-chip Controlling master sends the test data of band error checking function to lower-voltage circuit with the SPI mouth of single-chip microcomputer, to judge whether the being optical-fibre communications existing problems, if check code is correct, the proof optical-fibre communications is normal, if the check code mistake then proves the optical-fibre communications existing problems, need switch active and standby optical fiber transport channel this moment; Secondly, control the first multi channel selecting unit 103 and cut off signal of sensor, the normal voltage signal of reference voltage source 102 output is input to by the first multi channel selecting unit 103 mainly compares test with single-chip microcomputer, if test result is normal, then can be defined as sensor fault in the signal measurement unit 100, otherwise,, then be defined as the master and have fault with single-chip microcomputer inside if test result is unusual; At last, low-pressure side treatment circuit 109 sends test instruction, finish the computing of internal processes with single-chip microcomputer by standby Single-chip Controlling master, judging whether really to serve as main to go wrong, thereby finally finished the testing and diagnosing of the circuit at main usefulness single-chip microcomputer place, high-pressure side with single-chip microcomputer built-in system sequential operation.
Described low-pressure side treatment circuit 109 sends test instructions, be meant lower-voltage circuit indicate standby Single-chip Controlling master with single-chip microcomputer and main with single-chip microcomputer on one section program or data that can obtain tested single-chip microcomputer close beta result of operation.
Step 203: send the dormancy instruction with single-chip microcomputer to main, the first multi channel selecting unit is with the input termination sensor output of standby single-chip microcomputer, and signal input and data sendaisle switched to standby single-chip microcomputer, enable the A/D conversion of standby single-chip microcomputer simultaneously, make signal by standby single-chip microcomputer collection.
By above-mentioned steps, draw following three kinds of diagnosises: the one, the Sensor section existing problems, the 2nd, main with the single-chip microcomputer existing problems, the 3rd, the communication channel existing problems between high and low pressure side; If the problem of sensor then needs to remove the sensor of having gone bad, replace to new; If the problem of communication channel then can switch to standby optical-fibre communications passage to strengthen the stability of electronic mutual inductor operation under the situation that realizes not cutting off the power supply; If main problem with single-chip microcomputer, then the high-pressure side circuit will switch to standby single-chip microcomputer and carry out on high-tension side repertoire by standby single-chip microcomputer.
As seen, except sensor itself goes wrong, and under the situation of other faults appears in mutual inductor, all can realize finishing when bus does not cut off the power supply the switching of high-pressure side fallback circuit, can therefore not interrupt the business of mutual inductor, thereby lay a good foundation for electronic mutual inductor moves reliably and with long-term.
Above-described single-chip microcomputer is a kind of controller, according to the difference of two single-chip microcomputer user modes, can be divided into mainly with, standby two states, and state can change mutually, and correspondingly, active/standby controller can be single-chip microcomputer or other control chips.
Fig. 3 is the uniting and adjustment test philosophy synoptic diagram of package of the present invention, as shown in Figure 3, this cover testing scheme is to build according to circuit system structure shown in Figure 1, and wherein host computer is by monitor message and the SPI data of serial communication circuit reception from the low-pressure side treatment circuit; The steering order from host computer is initiated and/or received to the low-pressure side treatment circuit simultaneously, on high-tension side single-chip microcomputer receives the basic function of carrying out redundant backup circuit of the present invention after the relevant steering order, i.e. data acquisition, test data analysis are handled and function such as test data transmission channel.
Wherein, the masterslave switchover of high voltage side redundant backup circuit can realize by dual mode, and a kind of to be the low-pressure side treatment circuit finish automatically by the software control that runs on self inside, and another kind is to utilize the special software that runs on host computer to come long-range realization.Before a kind of mode be lower-voltage circuit by operating in inner software effect, send instruction to the high-pressure side, instruction is sent to the high-pressure side by optical fiber through deciphering after, control high-pressure side circuit realization function corresponding; A kind of mode in back is to send command adapted thereto by special software, be sent to the low-pressure side treatment circuit via serial ports then, by lower-voltage circuit the back is deciphered in instruction again and be sent to the high-pressure side by optical fiber control channel, the high-pressure side circuit receives the instruction back corresponding parts is operated final realization function corresponding.
The electronic type transformer high voltage side redundant backup circuit of present embodiment is by test, test result shows, more than two kinds of implementations except the basic function that can realize the described electronic mutual inductor of present embodiment, also can realize fault detection capability, promptly to the detection of optical-fibre communications channel failure, sensor fault, single-chip microcomputer fault.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (7)
1, a kind of electronic type transformer high voltage side redundant backup circuit, comprise master controller, signal measurement unit, the signal condition unit, reference voltage source, electrooptic switching element, it is characterized in that, this circuit comprises that also the steering order that is used to receive the low-pressure side treatment circuit and the analog acquisition conversion of signals that will nurse one's health the unit from signal are the preparation controller of digital signal, being used for will be through the simulating signal gating of conditioning to the first multi channel selecting unit of the mould/number conversion Input Address of master controller or preparation controller, is used for master controller is carried out digital signal gating after mould/number conversion to the second multi channel selecting unit of electrooptic switching element; Described signal measurement unit, signal condition unit and the first multi channel selecting unit link to each other successively, described reference voltage source links to each other with the first multi channel selecting unit, described master controller and preparation controller are parallel between the first multi channel selecting unit and the second multi channel selecting unit, and described electrooptic switching element links to each other with master controller, preparation controller and the second multi channel selecting unit respectively.
2, electronic type transformer high voltage side redundant backup circuit according to claim 1, it is characterized in that, described low-pressure side treatment circuit is the inner low-pressure side information process unit that comprises single-chip microcomputer and function corresponding software, be used on high-tension side active/standby controller sending controling instruction, reception is from high-tension side active/standby controller Serial Peripheral Interface (SPI) data, and these data delivered to the monitoring equipment that links to each other with described low-pressure side treatment circuit by the universal asynchronous receiving-transmitting interface carry out data processing.
3, electronic type transformer high voltage side redundant backup circuit according to claim 1, it is characterized in that, electrooptic switching element links to each other by two-way optical fiber with photoelectric conversion unit in the lower-voltage circuit in the high-pressure side circuit of described mutual inductor, constitutes the two-way optical fiber transport channel of active and standby usefulness each other.
4, electronic type transformer high voltage side redundant backup circuit according to claim 1, it is characterized in that, when described master controller breaks down, described low-pressure side treatment circuit will wake preparation controller up, and make described preparation controller take over the current work of master controller after the fault of confirming master controller.
5, a kind of fault detection method based on the described redundant backup circuit of claim 1 is characterized in that, this method comprises the steps:
The running status of a, low-pressure side treatment circuit monitoring high-pressure side circuit exists and activates preparation controller when unusual detecting the high-pressure side circuit;
B, described preparation controller reset to master controller, and can master controller carry out the repertoire of high-pressure side circuit after the judgement of low-pressure side treatment circuit resetted, and then returns step a when energy;
C, low-pressure side treatment circuit are tested preparation controller, enable the Serial Peripheral Interface (SPI) of preparation controller control master controller, send test data by Serial Peripheral Interface (SPI) to master controller, if test result proves then that normally the optical-fibre communications passage is normal, otherwise, with switching services to standby optical-fibre communications passage, and standby optical-fibre communications passage tested once more, if still unusual, then standby optical-fibre communications channel failure, otherwise execution in step c;
The output signal of d, preparation controller shutoff signal conditioning unit, the normal voltage signal access master controller of reference voltage source is analyzed, and analysis result is sent to the low-pressure side treatment circuit, if display result normally then fault from high-tension side signal measurement unit, otherwise there is fault in master controller inside; The low-pressure side treatment circuit is controlled the computing that master controller is finished the built-in system program by sending test instruction by preparation controller, if test result is still unusual, then there is fault in the system program of master controller.
6, fault detection method according to claim 5 is characterized in that, described step a mesohigh lateral circuit exists unusual, is meant that signal collected measuring result error that low-pressure side records exceeds the situation of the error range that system can bear.
7, fault detection method according to claim 5 is characterized in that, there is fault in master controller inside among the described step c, is meant that data acquisition function, test data analysis processing capacity or the test data transmission channel of test occurs unusual.
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| CNB2007101193849A CN100507580C (en) | 2007-07-23 | 2007-07-23 | Electronic type transformer high voltage side redundant backup circuit and failure detection method |
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| CNB2007101193849A CN100507580C (en) | 2007-07-23 | 2007-07-23 | Electronic type transformer high voltage side redundant backup circuit and failure detection method |
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| CN102445193B (en) * | 2011-09-20 | 2013-07-24 | 北京空间机电研究所 | Key signal intersection backup protection system for focal plane circuit |
| CN106253417B (en) * | 2016-10-18 | 2019-01-01 | 江苏联通动力电池驱动系统有限公司 | A kind of double loop redundancy active equalization battery management system and its control method |
| CN107069938B (en) * | 2017-04-28 | 2020-04-21 | 荣信汇科电气技术有限责任公司 | Data redundancy control method for flexible direct-current transmission converter valve |
| CN109151144B (en) * | 2018-08-14 | 2020-12-29 | 深圳市广和通无线通信软件有限公司 | Hardware management method, device, system, computer equipment and storage medium |
| CN113805556A (en) * | 2020-06-11 | 2021-12-17 | 北京科益虹源光电技术有限公司 | Terminal monitoring method, device and system based on excimer laser |
| CN113884747B (en) * | 2021-09-07 | 2023-12-26 | 中国电力科学研究院有限公司 | Overvoltage measuring device of electronic transformer |
| CN117093423B (en) * | 2023-10-18 | 2024-01-30 | 西安热工研究院有限公司 | Data synchronization method and system between trusted DCS terminals, electronic equipment and storage medium |
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| 电子式互感器高压侧的数据采集系统. 刘琨，周有庆，王洪涛.高电压技术，第33卷第1期. 2007 * |
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