CN105548856A - Brushless excitation-type generator set rotation diode detection system and method thereof - Google Patents
Brushless excitation-type generator set rotation diode detection system and method thereof Download PDFInfo
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- CN105548856A CN105548856A CN201511003528.5A CN201511003528A CN105548856A CN 105548856 A CN105548856 A CN 105548856A CN 201511003528 A CN201511003528 A CN 201511003528A CN 105548856 A CN105548856 A CN 105548856A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a brushless excitation-type generator set rotation diode detection system. The system comprises a large shaft gap detection coil, a first current induction detection coil, a second current induction detection coil and a state detection module. The large shaft gap detection coil, the first current induction detection coil and the second current induction detection coil are arranged in a periphery of a static part of a generator set respectively. The state detection module is used for detecting whether a rotation diode branch has a fault according to induction signals of the large shaft gap detection coil, the first current induction detection coil and the second current induction detection coil and carrying out alarm when the fault is discovered. The invention also discloses a brushless excitation-type generator set rotation diode detection method. In the invention, a sensor does not need to be additionally installed; through using a rotation rectification excitation type generator set, arrangement positions of the detection coils depend on a generator body structure; and positioning, alarm, fault and other development functions can be realized.
Description
Technical field
The present invention relates to technical field of electric power, particularly relate to a kind of brushless excitation pattern genset rotating diode detection system and method.
Background technology
Early stage domestic most nuclear power and Large-scale fire-electricity unit many employings brushless excitation mode, rotary rectifier part is as the indispensable ring of brushless exciting generating set, and the quality of its rotating diode element is most important to genset safe and stable operation.But, be in High Rotation Speed state when rotating diode element reality normally works, be difficult to detect.
At present, the common detection methods of rotating diode element mainly contains three kinds: pilot lamp frequency detecting method, harmonic wave armature method and direct probe method.The fuse luminotron state that pilot lamp frequency detecting method is equipped with to each diode of field observation because needing operator on duty, to determine rotating diode damaged condition, maintainable low, general little employing.Harmonic wave armature method is according to Harmonic Armature Reaction principle, the harmonic component relatively produced in field copper during rotating diode element fault and normal time harmonic component, to determine diode damaged condition, accurately can not locate fault rotating diode element, and be not suitable for the genset that branch road is too much or the number of phases is too much, have some limitations.The defect of direct probe method to arrange sensor, and relevant to the position of electric generator structure and sensor, and mounting arrangements exists certain technical requirement.
Summary of the invention
Technical matters to be solved by this invention is, a kind of brushless excitation pattern genset rotating diode detection system and method are provided, direct probe method is improved, do not need to set up sensor, be applied to rotary rectifier mode of excitation genset, the position of detecting coil depends on engine block structure, can realize location, alarm, fault and other expanding functions.
In order to solve the problems of the technologies described above, the invention provides a kind of brushless excitation pattern genset rotating diode detection system, comprise macro-axis breach detecting coil, the first electric current induction detecting coil, the second electric current induction detecting coil and state detection module, wherein, described macro-axis breach detecting coil is arranged at the periphery of genset stationary part, during for rotating to described macro-axis breach detecting coil correspondence position at macro-axis breach, produce induced signal; Described first electric current induction detecting coil and described second electric current induction detecting coil are arranged at the periphery of genset stationary part respectively, and be positioned at the both sides of described macro-axis breach detecting coil, described first electric current induction detecting coil becomes fixed angle, for producing induced signal when the branch road of rotating diode rotates to correspondence position with described second electric current induction detecting coil; Described state detection module connects described macro-axis breach detecting coil, described first electric current induction detecting coil and described second electric current induction detecting coil, whether there is fault for detecting rotating diode branch road according to the induced signal of described macro-axis breach detecting coil, described first electric current induction detecting coil and described second electric current induction detecting coil, and carry out alarm when discovery exists fault.
Further, also comprise host computer user-centered interface, be connected with described state detection module, to exert oneself function for fault rotating diode branch road location, the alarm of I section and II segment fault display and restriction excitation system.
Further, described first gallon coil is positioned at described macro-axis breach detecting coil clockwise direction 9 ° of places, and described second gallon coil is positioned at described macro-axis breach detecting coil counterclockwise 27 ° of places.
Further, described state detection module specifically comprises:
Signal acquiring unit, open into signal for obtaining the induced signal of described macro-axis breach detecting coil, the induced signal of described first electric current induction detecting coil, the induced signal of described second electric current induction detecting coil and the outside detection dropping into rotating diode, and be transformed to square-wave signal;
Fault self-checking unit, for judging whether that receiving the outside detection dropping into rotating diode opens into signal, and judge whether appearance first self test failure and the second self test failure according to the induced signal of described macro-axis breach detecting coil, wherein, described first self test failure is the timestamp of the induced signal not capturing described macro-axis breach detecting coil in 0.5s, and described second self test failure is the induced signal frequency out-of-limit of described macro-axis breach detecting coil;
Timestamp storage unit, when detection for receiving outside input rotating diode when fault self-checking unit is opened into signal and is not occurred described first self test failure and described second self test failure, catch the timestamp of the induced signal of described macro-axis breach detecting coil, time-base signal as current period is stored in data array T [i], wherein, i=0, 1, n, T [i] represents the time-base signal in i-th cycle, and the timestamp of the induced signal of the first electric current induction detecting coil described in seizure current period and described second electric current induction detecting coil, and be stored in data array X [j] [k] and Y [j] [k] respectively, wherein, j=1, n, k=0, 1, m, described in when X [j] [k] and Y [j] [k] represents jth cycle respectively, whether the first electric current induction detecting coil and described second electric current induction detecting coil capture time stamp signal within a kth time period, and when capturing time stamp signal, data storing is X [j] [k]/Y [j] [k]=0, otherwise X [j] [k]/Y [j] [k]=1, n represents the periodicity catching data, m represents the sum of the signal number in the cycle,
Data positioning unit, for the rotating diode branch road that decision data X [j] [k] and Y [j] [k] is corresponding, wherein, rotating diode branch road ∈ [T [j]+offset1+ (k-0.5) Δ corresponding to data X [j] [k], T [j]+offset1+ (k+0.5) Δ], rotating diode branch road ∈ [T [j]+offset2+ (k-0.5) Δ corresponding to data Y [j] [k], T [j]+offset2+ (k+0.5) Δ], in formula, Δ=(T [j]-T [j-1])/30, offset1 represents the departure of the time-base signal of X [j] [k] and current period, offset2 represents the departure of the time-base signal of Y [j] [k] and current period,
Fault redundance detecting unit, for working as in the testing result in n cycle, the data that rotating diode branch road is corresponding occur w time and are 1, w is above predetermined threshold value, judges present branch rotating diode fault,
Fault warning unit, for when only there being a rotating diode branch trouble, carries out I section alarm prompt, as 2 and above rotating diode branch trouble, carries out II segment fault prompting.
Further, described second self test failure in described fault self-checking unit is specially: when the induced signal frequency of described macro-axis breach detecting coil
Present invention also offers a kind of brushless excitation pattern genset rotating diode detection method based on above-mentioned rotating diode detection system, comprising:
Described state detection module obtains the induced signal of described macro-axis breach detecting coil, the induced signal of described first electric current induction detecting coil, the induced signal of described second electric current induction detecting coil and the outside detection dropping into rotating diode and opens into signal, and is transformed to square-wave signal;
Judge whether described state detection module receives the outside detection dropping into rotating diode and open into signal, and judge whether appearance first self test failure and the second self test failure according to the induced signal of described macro-axis breach detecting coil, wherein, described first self test failure is the timestamp of the induced signal not capturing described macro-axis breach detecting coil in 0.5s, and described second self test failure is the induced signal frequency out-of-limit of described macro-axis breach detecting coil;
When the detection that described state detection module receives outside input rotating diode is opened into signal and is not occurred described first self test failure and described second self test failure, catch the timestamp of the induced signal of described macro-axis breach detecting coil, time-base signal as current period is stored in data array T [i], wherein, i=0,1 ... n, T [i] represent the time-base signal in i-th cycle, catch the timestamp of the induced signal of the first electric current induction detecting coil described in current period and described second electric current induction detecting coil, and be stored in data array X [j] [k] and Y [j] [k] respectively, wherein, j=1, n, k=0, 1, m, described in when X [j] [k] and Y [j] [k] represents jth cycle respectively, whether the first electric current induction detecting coil and described second electric current induction detecting coil capture time stamp signal within a kth time period, and when capturing time stamp signal, data storing is X [j] [k]/Y [j] [k]=0, no person X [j] [k]/Y [j] [k]=1, n represents the periodicity catching data, m represents the sum of the signal number in the cycle,
The rotating diode branch road that decision data X [j] [k] and Y [j] [k] is corresponding, wherein, rotating diode branch road ∈ [T [j]+offset1+ (k-0.5) Δ corresponding to data X [j] [k], T [j]+offset1+ (k+0.5) Δ], rotating diode branch road ∈ [T [j]+offset2+ (k-0.5) Δ corresponding to data Y [j] [k], T [j]+offset2+ (k+0.5) Δ], in formula, Δ=(T [j]-T [j-1])/30, offset1 represents the departure of the time-base signal of X [j] [k] and current period, offset2 represents the departure of the time-base signal of Y [j] [k] and current period,
In the testing result in n cycle, the data that rotating diode branch road is corresponding occur w time and are 1 above, and judge present branch rotating diode fault, w is predetermined threshold value;
When only there being a rotating diode branch trouble, carrying out I section alarm prompt, as 2 and above rotating diode branch trouble, carrying out II segment fault prompting.
Further, also comprise: adopt host computer user-centered interface display fault rotating diode branch road location, the alarm of I section and II segment fault and restriction excitation system to exert oneself function.
Further, described second self test failure is specially: when the induced signal frequency of described macro-axis breach detecting coil
Implement the present invention, there is following beneficial effect:
(1) improve direct probe method, do not need to set up sensor, be applied to rotary rectifier mode of excitation genset, the position of detecting coil depends on engine block structure, can realize location, alarm, fault and other expanding functions.
(2) redundancy process is carried out to operation result, assurance device reliability, stability, accuracy.
(3) accurately locate, show in real time, restriction generator excited system is exerted oneself, and ensures genset safe operation, and can send to genset operation monitoring center by the alarm of I section or II segment fault signal, starts I section alarm or II segment fault prediction scheme.
(4) support program of lower computer exploitation, and can with upper machine communication, applied range, degree of intelligence is high, friendly interface.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is typical brushless excitation pattern genset topology diagram;
Fig. 2 is the structural drawing of an embodiment of a kind of brushless excitation pattern genset rotating diode detection system provided by the invention;
Fig. 3 is rotating diode state-detection location schematic diagram in the present invention;
Fig. 4 is the schematic diagram of user-centered interface software for display nestools in the present invention;
Fig. 5 is the schematic flow sheet of an embodiment of a kind of brushless excitation pattern genset rotating diode detection method provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
As shown in Figure 2, it is the structural drawing of an embodiment of a kind of brushless excitation pattern genset rotating diode detection system provided by the invention, as shown in Figure 2, comprise macro-axis breach detecting coil TS1, the first electric current induction detecting coil TAS1, the second electric current induction detecting coil TAS2 and state detection module, wherein, macro-axis breach detecting coil TS1 is arranged at the periphery of genset stationary part, during for rotating to described macro-axis breach detecting coil TS1 correspondence position at macro-axis breach, produce induced signal, first electric current induction detecting coil TAS1 and the second electric current induction detecting coil TAS2 is arranged at the periphery of genset stationary part respectively, and be positioned at the both sides of macro-axis breach detecting coil TS1, first electric current induction detecting coil TAS1 becomes fixed angle with the second electric current induction detecting coil TAS2, concrete, first gallon coil TAS1 is positioned at macro-axis breach detecting coil TS1 clockwise direction 9 ° of places, second gallon coil is positioned at macro-axis breach detecting coil TS1 counterclockwise 27 ° of places's (concrete relevant with the number of phases with genset rotation rectification element parallel branch number), for producing induced signal when the branch road of rotating diode rotates to correspondence position, state detection module connects macro-axis breach detecting coil TS1, the first electric current induction detecting coil TAS1 and the second electric current induction detecting coil TAS2, whether there is fault for detecting rotating diode branch road according to the induced signal of macro-axis breach detecting coil TS1, the first electric current induction detecting coil TAS1 and the second electric current induction detecting coil TAS2, and carry out alarm when discovery exists fault.
Wherein, state detection module specifically comprises:
Signal acquiring unit, induced signal, the first electric current for obtaining macro-axis breach detecting coil TS1 are responded to the induced signal of detecting coil TAS1, the induced signal of the second electric current induction detecting coil TAS2 and the outside detection dropping into rotating diode and are opened into signal, and be transformed to square-wave signal; Wherein, when rotor macro-axis breach rotates to TS1 position, TAS1 and TAS2 senses rotation rectification element peak signal, produces induced signal;
Fault self-checking unit, for judging whether that receiving the outside detection dropping into rotating diode opens into signal, and judge whether appearance first self test failure and the second self test failure according to the induced signal of macro-axis breach detecting coil TS1, wherein, first self test failure is the timestamp of the induced signal not capturing macro-axis breach detecting coil TS1 in 0.5s, second self test failure is the induced signal frequency out-of-limit of macro-axis breach detecting coil TS1, is specially: the induced signal frequency of macro-axis breach detecting coil TS1
Timestamp storage unit, when detection for receiving outside input rotating diode when fault self-checking unit is opened into signal and is not occurred the first self test failure and the second self test failure, catch the timestamp of the induced signal of macro-axis breach detecting coil TS1, time-base signal as current period is stored in data array T [i], wherein, i=0, 1, n, T [i] represents the time-base signal in i-th cycle, and catch the timestamp that current period first electric current responds to the induced signal of detecting coil TAS1 and the second electric current induction detecting coil TAS2, and be stored in data array X [j] [k] and Y [j] [k] respectively, wherein, j=1, n, k=0, 1, m, when X [j] [k] and Y [j] [k] represents jth cycle respectively, whether the first electric current induction detecting coil TAS1 and the second electric current induction detecting coil TAS2 captures time stamp signal within a kth time period, and when capturing time stamp signal, data storing is X [j] [k]/Y [j] [k]=0, represent and do not break down, no person X [j] [k]/Y [j] [k]=1, expression is broken down, n represents the periodicity catching data, m represents the sum of the signal number in the cycle, in the specific implementation, n can be 5, m can be 40.
Data positioning unit, for the rotating diode branch road that decision data X [j] [k] and Y [j] [k] is corresponding, wherein,
Rotating diode branch road ∈ [T [j]+offset1+ (k-0.5) Δ, T [j]+offset1+ (k+0.5) Δ] corresponding to data X [j] [k],
Rotating diode branch road ∈ [T [j]+offset2+ (k-0.5) Δ, T [j]+offset2+ (k+0.5) Δ] corresponding to data Y [j] [k],
In formula, Δ=(T [j]-T [j-1])/30, as shown in Figure 3, offset1 represents the departure of the time-base signal of X [j] [k] and current period, and offset2 represents the departure of the time-base signal of Y [j] [k] and current period;
See table 1TAS1 detection ordering table and table 2TAS2 detection ordering table during concrete location, it is the physical spatial location order of placement of rotation rectification element;
Table 1
Table 2
Fault redundance detecting unit, for working as in the testing result in n cycle, the data that rotating diode branch road is corresponding occur w time and are 1, w is above predetermined threshold value, judges current rotating diode branch trouble, and wherein, when n is 5, w can be set to 3; During concrete enforcement, can calculate number of stoppages XX [s]=X [1] [s]+X [2] [s] of s the rotating diode branch road that TSA1 detects+... + X [n] [s], s=0,1, m, calculate number of stoppages YY [s]=Y [1] [s]+Y [2] [s] of s rotating diode branch road detecting of TSA2+... + Y [n] [s], s=0,1 ..., m, as XX [s] >=w and YY [s] >=w time, judge s rotating diode branch trouble;
Fault warning unit, for when only there being a rotating diode branch trouble, carries out I section alarm prompt, as 2 and above rotating diode branch trouble, carries out II segment fault prompting.
State detection module comprises simulating signal hardware circuits which process part, outputs on hardware, X20CP1484 Bei Jialai CPU module and serial communication module.
Implement the embodiment of the present invention, there is following beneficial effect:
(1) improve direct probe method, do not need to set up sensor, be applied to rotary rectifier mode of excitation genset, the position of detecting coil depends on engine block structure, can realize location, alarm, fault and other expanding functions.
(2) redundancy process is carried out to operation result, assurance device reliability, stability, accuracy.
(3) accurately locate, show in real time, restriction generator excited system is exerted oneself, and ensures genset safe operation, and can send to genset operation monitoring center by the alarm of I section or II segment fault signal, starts I section alarm or II segment fault prediction scheme.
Embodiment 2
The difference of the present embodiment and embodiment 1 with also comprise host computer user-centered interface nestools, be connected with state detection module, as shown in Figure 4, to exert oneself function for fault rotating diode branch road location, the alarm of I section and II segment fault display and restriction excitation system, follow and coordinate field regulator restriction generator excited system to exert oneself according to rotary rectifier system failure degree, ensure genset safe operation.
Implement the embodiment of the present invention, there is following beneficial effect:
(1) improve direct probe method, do not need to set up sensor, be applied to rotary rectifier mode of excitation genset, the position of detecting coil depends on engine block structure, can realize location, alarm, fault and other expanding functions.
(2) redundancy process is carried out to operation result, assurance device reliability, stability, accuracy.
(3) accurately locate, show in real time, restriction generator excited system is exerted oneself, and ensures genset safe operation, and can send to genset operation monitoring center by the alarm of I section or II segment fault signal, starts I section alarm or II segment fault prediction scheme.
(4) support program of lower computer exploitation, and can with upper machine communication, applied range, degree of intelligence is high, friendly interface.
Embodiment 3
Present embodiments provide a kind of brushless excitation pattern genset rotating diode detection method of the rotating diode detection system based on embodiment 1, as shown in Figure 5, comprise step:
Induced signal and the outside detection dropping into rotating diode of the induced signal of S101, state detection module acquisition macro-axis breach detecting coil TS1, the induced signal of the first electric current induction detecting coil TAS1, the second electric current induction detecting coil TAS2 are opened into signal, and are transformed to square-wave signal;
S102, judge whether state detection module receives the outside detection dropping into rotating diode and open into signal, and judge whether appearance first self test failure and the second self test failure according to the induced signal of macro-axis breach detecting coil TS1, wherein, first self test failure is the timestamp of the induced signal not capturing macro-axis breach detecting coil TS1 in 0.5s, second self test failure is the induced signal frequency out-of-limit of macro-axis breach detecting coil TS1, is specially: when the induced signal frequency of macro-axis breach detecting coil TS1
S103, when state detection module receive the outside detection dropping into rotating diode open into signal and do not occur the first self test failure and the second self test failure time, catch the timestamp of the induced signal of macro-axis breach detecting coil TS1, time-base signal as current period is stored in data array T [i], wherein, i=0,1 ... n, T [i] represent the time-base signal in i-th cycle, catch the timestamp of the induced signal of current period first electric current induction detecting coil TAS1 and the second electric current induction detecting coil TAS2, and be stored in data array X [j] [k] and Y [j] [k] respectively, wherein, j=1, n, k=0, 1, m, when X [j] [k] and Y [j] [k] represents jth cycle respectively, whether the first electric current induction detecting coil TAS1 and the second electric current induction detecting coil TAS2 captures time stamp signal within a kth time period, and when capturing time stamp signal, data storing is X [j] [k]/Y [j] [k]=0, no person X [j] [k]/Y [j] [k]=1, n represents the periodicity catching data, m represents the sum of the signal number in the cycle,
S104, the rotating diode branch road that decision data X [j] [k] and Y [j] [k] is corresponding, wherein, rotating diode branch road ∈ [T [j]+offset1+ (k-0.5) Δ corresponding to data X [j] [k], T [j]+offset1+ (k+0.5) Δ], rotating diode branch road ∈ [T [j]+offset2+ (k-0.5) Δ corresponding to data Y [j] [k], T [j]+offset2+ (k+0.5) Δ], in formula, Δ=(T [j]-T [j-1])/30, offset1 represents the departure of the time-base signal of X [j] [k] and current period, offset2 represents the departure of the time-base signal of Y [j] [k] and current period,
S105, in the testing result in n cycle, the data that rotating diode branch road is corresponding occur w time and are 1 above, and judge present branch rotating diode fault, w is predetermined threshold value;
S106, when only there being a rotating diode branch trouble, carrying out I section alarm prompt, as 2 and above rotating diode branch trouble, carrying out II segment fault prompting.
S107, host computer user-centered interface display fault rotating diode branch road location, the alarm of I section and II segment fault and restriction excitation system is adopted to exert oneself function.
The present embodiment and embodiment 1 one_to_one corresponding, part not please refer to embodiment 1 to the greatest extent, does not repeat them here.
Implement the embodiment of the present invention, there is following beneficial effect:
(1) improve direct probe method, do not need to set up sensor, be applied to rotary rectifier mode of excitation genset, the position of detecting coil depends on engine block structure, can realize location, alarm, fault and other expanding functions.
(2) redundancy process is carried out to operation result, assurance device reliability, stability, accuracy.
(3) accurately locate, show in real time, restriction generator excited system is exerted oneself, and ensures genset safe operation, and can send to genset operation monitoring center by the alarm of I section or II segment fault signal, starts I section alarm or II segment fault prediction scheme.
(4) support program of lower computer exploitation, and can with upper machine communication, applied range, degree of intelligence is high, friendly interface.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or device and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or device.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the device comprising this key element and also there is other identical element.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In several embodiments that the application provides, should be understood that, disclosed system and method can realize by another way.Such as, system embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.
Professional can also recognize further, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. a brushless excitation pattern genset rotating diode detection system, is characterized in that, comprises macro-axis breach detecting coil, the first electric current induction detecting coil, the second electric current induction detecting coil and state detection module, wherein,
Described macro-axis breach detecting coil is arranged at the periphery of genset stationary part, during for rotating to described macro-axis breach detecting coil correspondence position at macro-axis breach, produces induced signal;
Described first electric current induction detecting coil and described second electric current induction detecting coil are arranged at the periphery of genset stationary part respectively, and be positioned at the both sides of described macro-axis breach detecting coil, described first electric current induction detecting coil becomes fixed angle, for producing induced signal when the branch road of rotating diode rotates to correspondence position with described second electric current induction detecting coil;
Described state detection module connects described macro-axis breach detecting coil, described first electric current induction detecting coil and described second electric current induction detecting coil, whether there is fault for detecting rotating diode branch road according to the induced signal of described macro-axis breach detecting coil, described first electric current induction detecting coil and described second electric current induction detecting coil, and carry out alarm when discovery exists fault.
2. brushless excitation pattern genset rotating diode detection system as claimed in claim 1, it is characterized in that, also comprise host computer user-centered interface, be connected with described state detection module, exert oneself function for fault rotating diode branch road location, the alarm of I section and II segment fault display and restriction excitation system.
3. brushless excitation pattern genset rotating diode detection system as claimed in claim 1 or 2, it is characterized in that, described first gallon coil is positioned at described macro-axis breach detecting coil clockwise direction 9 ° of places, and described second gallon coil is positioned at described macro-axis breach detecting coil counterclockwise 27 ° of places.
4. brushless excitation pattern genset rotating diode detection system as claimed in claim 1 or 2, it is characterized in that, described state detection module specifically comprises:
Signal acquiring unit, open into signal for obtaining the induced signal of described macro-axis breach detecting coil, the induced signal of described first electric current induction detecting coil, the induced signal of described second electric current induction detecting coil and the outside detection dropping into rotating diode, and be transformed to square-wave signal;
Fault self-checking unit, for judging whether that receiving the outside detection dropping into rotating diode opens into signal, and judge whether appearance first self test failure and the second self test failure according to the induced signal of described macro-axis breach detecting coil, wherein, described first self test failure is the timestamp of the induced signal not capturing described macro-axis breach detecting coil in 0.5s, and described second self test failure is the induced signal frequency out-of-limit of described macro-axis breach detecting coil;
Timestamp storage unit, when detection for receiving outside input rotating diode when fault self-checking unit is opened into signal and is not occurred described first self test failure and described second self test failure, catch the timestamp of the induced signal of described macro-axis breach detecting coil, time-base signal as current period is stored in data array T [i], wherein, i=0, 1, n, T [i] represents the time-base signal in i-th cycle, and the timestamp of the induced signal of the first electric current induction detecting coil described in seizure current period and described second electric current induction detecting coil, and be stored in data array X [j] [k] and Y [j] [k] respectively, wherein, j=1, n, k=0, 1, m, described in when X [j] [k] and Y [j] [k] represents jth cycle respectively, whether the first electric current induction detecting coil and described second electric current induction detecting coil capture time stamp signal within a kth time period, and when capturing time stamp signal, data storing is X [j] [k]/Y [j] [k]=0, no person X [j] [k]/Y [j] [k]=1, n represents the periodicity catching data, m represents the sum of the signal number in the cycle,
Data positioning unit, for the rotating diode branch road that decision data X [j] [k] and Y [j] [k] is corresponding, wherein, rotating diode branch road ∈ [T [j]+offset1+ (k-0.5) Δ corresponding to data X [j] [k], T [j]+offset1+ (k+0.5) Δ], rotating diode branch road ∈ [T [j]+offset2+ (k-0.5) Δ corresponding to data Y [j] [k], T [j]+offset2+ (k+0.5) Δ], in formula, Δ=(T [j]-T [j-1])/30, offset1 represents the departure of the time-base signal of X [j] [k] and current period, offset2 represents the departure of the time-base signal of Y [j] [k] and current period,
Fault redundance detecting unit, for working as in the testing result in n cycle, the data that rotating diode branch road is corresponding occur w time and are 1, w is above predetermined threshold value, judges present branch rotating diode fault,
Fault warning unit, for when only there being a rotating diode branch trouble, carries out I section alarm prompt, as 2 and above rotating diode branch trouble, carries out II segment fault prompting.
5. brushless excitation pattern genset rotating diode detection system as claimed in claim 4, it is characterized in that, described second self test failure in described fault self-checking unit is specially: when the induced signal frequency of described macro-axis breach detecting coil
6., based on a brushless excitation pattern genset rotating diode detection method for rotating diode detection system as claimed in claim 1, it is characterized in that, comprising:
Described state detection module obtains the induced signal of described macro-axis breach detecting coil, the induced signal of described first electric current induction detecting coil, the induced signal of described second electric current induction detecting coil and the outside detection dropping into rotating diode and opens into signal, and is transformed to square-wave signal;
Judge whether described state detection module receives the outside detection dropping into rotating diode and open into signal, and judge whether appearance first self test failure and the second self test failure according to the induced signal of described macro-axis breach detecting coil, wherein, described first self test failure is the timestamp of the induced signal not capturing described macro-axis breach detecting coil in 0.5s, and described second self test failure is the induced signal frequency out-of-limit of described macro-axis breach detecting coil;
When the detection that described state detection module receives outside input rotating diode is opened into signal and is not occurred described first self test failure and described second self test failure, catch the timestamp of the induced signal of described macro-axis breach detecting coil, time-base signal as current period is stored in data array T [i], wherein, i=0,1 ... n, T [i] represent the time-base signal in i-th cycle, catch the timestamp of the induced signal of the first electric current induction detecting coil described in current period and described second electric current induction detecting coil, and be stored in data array X [j] [k] and Y [j] [k] respectively, wherein, j=1, n, k=0, 1, m, described in when X [j] [k] and Y [j] [k] represents jth cycle respectively, whether the first electric current induction detecting coil and described second electric current induction detecting coil capture time stamp signal within a kth time period, and when capturing time stamp signal, data storing is X [j] [k]/Y [j] [k]=0, no person X [j] [k]/Y [j] [k]=1, n represents the periodicity catching data, m represents the sum of the signal number in the cycle,
The rotating diode branch road that decision data X [j] [k] and Y [j] [k] is corresponding, wherein, rotating diode branch road ∈ [T [j]+offset1+ (k-0.5) Δ corresponding to data X [j] [k], T [j]+offset1+ (k+0.5) Δ], rotating diode branch road ∈ [T [j]+offset2+ (k-0.5) Δ corresponding to data Y [j] [k], T [j]+offset2+ (k+0.5) Δ], in formula, Δ=(T [j]-T [j-1])/30, offset1 represents the departure of the time-base signal of X [j] [k] and current period, offset2 represents the departure of the time-base signal of Y [j] [k] and current period,
In the testing result in n cycle, the data that rotating diode branch road is corresponding occur w time and are 1 above, and judge present branch rotating diode fault, w is predetermined threshold value;
When only there being a rotating diode branch trouble, carrying out I section alarm prompt, as 2 and above rotating diode branch trouble, carrying out II segment fault prompting.
7. brushless excitation pattern genset rotating diode detection method as claimed in claim 6, is characterized in that, adopts host computer user-centered interface display fault rotating diode branch road location, the alarm of I section and II segment fault and restriction excitation system to exert oneself function.
8. brushless excitation pattern genset rotating diode detection method as claimed in claims 6 or 7, it is characterized in that, described second self test failure is specially: when the induced signal frequency of described macro-axis breach detecting coil
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