CN102005888A - Branch state monitoring method and device of rotary rectifier - Google Patents
Branch state monitoring method and device of rotary rectifier Download PDFInfo
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- CN102005888A CN102005888A CN2010105033164A CN201010503316A CN102005888A CN 102005888 A CN102005888 A CN 102005888A CN 2010105033164 A CN2010105033164 A CN 2010105033164A CN 201010503316 A CN201010503316 A CN 201010503316A CN 102005888 A CN102005888 A CN 102005888A
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Abstract
The embodiment of the invention discloses a branch state monitoring method of a rotary rectifier, which comprises the following steps of: obtaining the rotating period of the rotary rectifier; sequentially obtaining conducting branch signals of the rotary rectifier in the period; carrying out analysis processing on the conducting branch signals in the period; and determining the branch state of the rotary rectifier. The embodiment of the invention also discloses a branch state monitoring device of the rotary rectifier. When the branch state monitoring method and the branch state monitoring device are adopted, the branch state of the rotary rectifier can be monitored so that faults generated in branches can be processed in time to ensure the normal operation of a generator.
Description
Technical field
The present invention relates to technical field of generators, relate in particular to a kind of rotating diode state monitoring method and device of exciter.
Background technology
Generator will be realized generating, need set up space magnetic field between generator amature and stator, makes the space magnetic field of cutting alternation in the relative motion of stator winding between stator and rotor of generator, thereby produces electric energy.Usually, the necessary space magnetic field of above-mentioned generation electric energy forms by add direct current in the rotor winding.Because therefore the electric current that excitation system produced of generator need be converted to direct current with alternating current by a kind of equipment for exchanging, this equipment is the rotating rectifier of generator.
The branch road that the rotating rectifier of generator generally all is made up of the diode of different circuit structures, rectification circuit is generally heterogeneous full-wave rectifying circuit etc., and rotating rectifier is fixed on as loop configuration on the rotor of generator, and its curb rectifier evenly distributes.In the practical application, may there be multiple structure in rotating rectifier, specifically can be referring to Fig. 1-Fig. 3, and Fig. 1-Fig. 3 shows the common structure of rotating rectifier.See also Fig. 1, be a kind of structural representation of the rotating rectifier of generator; This rotating rectifier comprises a plurality of branch roads 1, and wherein, branch road 1 comprises diode 11 and insurance 12.When the diode on the branch road 1 11 short circuit occurs or punctures, insurance 12 fusing, corresponding branch road 1 disconnects, to prevent to produce more serious fault.See also Fig. 2, be the another kind of structural representation of the rotating rectifier of generator; In this rotating rectifier, a positive polarity diode and a negative polarity diode are connected in the same insurance jointly, form a branch road.See also Fig. 3, be the another kind of structural representation of the rotating rectifier of generator; In this rotating rectifier, a positive polarity diode is connected with an insurance, and a negative polarity diode is connected with an insurance, is connected to jointly at last with forming a branch road on the one-level armature winding.
From the above, generating has important effect to rotating rectifier for exciter, and a line state of rotating rectifier, then whether direct relation rotating rectifier work.Because generator is during with rated power operation, the direct current that rotating rectifier provided must satisfy certain value, in case occur because short circuit appears in the diode on the branch road on the rectifier or puncture causes the phenomenon that failure causes such as fuse melting or diode disconnection itself cause the rectifier branch road to disconnect, then must cause other branch currents to increase, if the fusing capacity of the increase over insurance of electric current, can cause that then other branch roads are out of service, thereby influence the normal operation of generator, even cause the damage of each equipment that is connected with generator.Therefore, how the branch road to the rotating rectifier of generator carries out status monitoring, makes branch road can access timely processing when producing fault, guarantees the normal operation of generator, becomes a technical problem that needs to be resolved hurrily.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of branch road state monitoring method and device of rotating rectifier are provided, can monitor a line state of rotating rectifier, be beneficial to when branch road produces fault, can access timely processing, guarantee the normal operation of generator.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of branch road state monitoring method of rotating rectifier, comprising:
Obtain the cycle of rotating rectifier rotation, and obtain the conducting tributary signal of rotating rectifier in this cycle successively;
Conducting tributary signal in the described cycle is carried out analyzing and processing, determine a line state of rotating rectifier.
Wherein, the described cycle of obtaining rotating rectifier rotation, and obtain the conducting tributary signal of rotating rectifier in this cycle successively, comprising:
Obtain the cycle of rotating rectifier rotation by axle search coil or axle sensor;
Obtain the conducting tributary signal of rotating rectifier in real time, successively by at least one branch road search coil or branch sensor;
In the described cycle of obtaining,, obtain the conducting tributary signal of rotating rectifier in this cycle to described conducting tributary signal continuous sampling of obtaining.
Wherein, described conducting tributary signal in the described cycle is carried out analyzing and processing, determines a line state of rotating rectifier, comprising:
Conducting tributary signal in the described cycle is carried out Filtering Processing, described conducting tributary signal is produced the interference signal of disturbing with filtering;
Described conducting tributary signal after the Filtering Processing is carried out normalized;
According to the conducting tributary signal in the described cycle after the normalized, determine a line state of rotating rectifier.
Wherein, described according to the conducting tributary signal in the described cycle after the normalized, determine to comprise line state of rotating rectifier:
Whether judge in the described cycle after the normalized exists amplitude to be lower than the conducting tributary signal of default threshold value;
If judged result determines then that for not the branch road of rotating rectifier is in normal condition;
If judged result is for being, determine that then the branch road of rotating rectifier is in malfunction.
Wherein, the branch road of described definite rotating rectifier is in after the malfunction, also comprises: determine that amplitude is lower than conducting tributary signal pairing position in the described cycle of default threshold value; According to described position, determine the fault branch of rotating rectifier.
Wherein, described conducting tributary signal in the described cycle is carried out analyzing and processing, determine also to comprise: when the branch road of determining rotating rectifier is in malfunction, export corresponding warning message after the line state of rotating rectifier.
Correspondingly, the embodiment of the invention also provides a kind of branch road state monitoring apparatus of rotating rectifier, comprising:
Acquisition module is used to obtain the cycle of rotating rectifier rotation, and obtains the conducting tributary signal of rotating rectifier in this cycle successively;
State monitoring module is used for the conducting tributary signal in the described cycle is carried out analyzing and processing, determines a line state of rotating rectifier.
Wherein, described acquisition module comprises:
Axle search coil or axle sensor are used to obtain the cycle that rotating rectifier rotates;
At least one branch road search coil or branch sensor are used for obtaining in real time, successively the conducting tributary signal of rotating rectifier;
Sampling unit was used in the described cycle of obtaining, and to described conducting tributary signal continuous sampling of obtaining, obtained the conducting tributary signal of rotating rectifier in this cycle.
Wherein, state monitoring module comprises:
Filter unit is used for the conducting tributary signal in the described cycle is carried out Filtering Processing, described conducting tributary signal is produced the interference signal of disturbing with filtering;
The normalization unit is used for the described conducting tributary signal after the described filtering unit filters processing is carried out normalized;
Condition Monitoring Unit is used for according to the conducting tributary signal in the described cycle after the described normalization unit normalized, determines a line state of rotating rectifier.
Wherein, described Condition Monitoring Unit comprises:
Judging unit is used to judge in the described cycle after the normalized whether exist amplitude to be lower than the conducting tributary signal of default threshold value;
Status determining unit, be used for when described judgment unit judges result for not the time, determine that the branch road of rotating rectifier is in normal condition; When described judgment unit judges result when being, determine that the branch road of rotating rectifier is in malfunction.
Wherein, described Condition Monitoring Unit also comprises:
Position determination unit is used for determining that amplitude is lower than conducting tributary signal pairing position in the described cycle of default threshold value;
The fault branch determining unit is used for determining the fault branch of rotating rectifier according to the determined position of described position determination unit.
Wherein, described device also comprises: alarm module is used for exporting corresponding warning message when described state monitoring module determines that the branch road of rotating rectifier is in malfunction.
Implement the embodiment of the invention, have following beneficial effect:
1, the embodiment of the invention is by obtaining the cycle of rotating rectifier rotation, and obtain the conducting tributary signal of rotating rectifier in this cycle, conducting tributary signal in this cycle is carried out analyzing and processing, thereby determine a line state of rotating rectifier, realized status monitoring, be beneficial to the normal operation of generator the branch road of rotating rectifier;
2, the embodiment of the invention is obtained the cycle of rotating rectifier rotation by installation shaft search coil or axle sensor, and by branch road that at least one branch road search coil or branch sensor come to obtain in real time, the successively rotating rectifier signal when the conducting is installed, and carry out signal processing and threshold value and judge, determine a line state, improved the reliability and stability of generator operation;
3, the embodiment of the invention can be determined the fault branch of rotating rectifier according to producing location of fault when the branch road that monitors rotating rectifier produces fault, is beneficial to relevant staff and fault is in time handled and is got rid of;
4, the embodiment of the invention is sent warning monitoring branch road when producing fault, can make relevant staff in time handle and get rid of fault, has further improved the reliability and stability of generator operation.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of structural representation of the rotating rectifier of generator;
Fig. 2 is the another kind of structural representation of the rotating rectifier of generator;
Fig. 3 is the another kind of structural representation of the rotating rectifier of generator;
Fig. 4 is the structural representation of first embodiment of the branch road state monitoring apparatus of rotating rectifier of the present invention;
Fig. 5 is the structural representation of second embodiment of the branch road state monitoring apparatus of rotating rectifier of the present invention;
Fig. 6 is the structural representation of the embodiment of acquisition module of the present invention;
Fig. 7 is the design sketch of first embodiment of the concrete installation of search coil in the acquisition module of the present invention;
Fig. 8 is first design sketch of second embodiment of the concrete installation of search coil in the acquisition module of the present invention;
Fig. 9 is second design sketch of second embodiment of the concrete installation of search coil in the acquisition module of the present invention;
Figure 10 is the structural representation of the embodiment of state monitoring module of the present invention;
Figure 11 is the signal waveforms after state monitoring module of the present invention is handled;
Figure 12 is the structural representation of first embodiment of Condition Monitoring Unit of the present invention;
Figure 13 is the fault waveform figure of Condition Monitoring Unit monitoring of the present invention;
Figure 14 is the structural representation of second embodiment of Condition Monitoring Unit of the present invention;
Figure 15 is the flow chart of first embodiment of the branch road state monitoring method of rotating rectifier of the present invention;
Figure 16 is the flow chart of second embodiment of the branch road state monitoring method of rotating rectifier of the present invention;
Figure 17 is the flow chart of the 3rd embodiment of the branch road state monitoring method of rotating rectifier of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Need to prove that the embodiment of the invention is applicable to the rotating rectifier that positive negative diode is made up of a collector ring, promptly be applicable to rotating rectifier as shown in Figure 1-Figure 3.
See also the structural representation of Fig. 4 for first embodiment of the branch road state monitoring apparatus of rotating rectifier of the present invention; Described device comprises:
In the specific implementation, as described above, because rotating rectifier is fixed on the rotor of generator, the cycle of then described rotating rectifier rotation also is the cycle of rotor, therefore, described acquisition module 10 can obtain the cycle of rotating rectifier rotation by the cycle of obtaining rotor rotation.Particularly, the epitrochanterian axle mark position (mark that is used for the mark rotor-position at generator, it is pre-set) near stator or support on a search coil or transducer are installed, this search coil or transducer are called as a search coil or axle sensor, described axle search coil or the double signal of sensing a mark position of axle sensor, then the signal period apart of this that detects two secondary axes mark positions is the cycle that generator amature rotates, and also is the cycle of the rotating rectifier rotation that gets access to.
After the structure of rotating rectifier was determined, the ON time of the branch road of rotating rectifier had periodically, that is: the branch road of rotating rectifier is in the normally state in certain time period, is in not on-state in certain time period.Described acquisition module 10 can be by installing branch road search coil or branch sensor in position, make it near the metallic conductor in branch road of rotating rectifier, with the Continuity signal of the branch road of induction rotating rectifier.In the specific implementation, described suitable position can be on the stator or support by the rotating rectifier, the branch road search coil or the branch sensor that are positioned at this appropriate location need meet the following conditions: when every branch road of rotating rectifier during in its ON time section conducting, its Continuity signal all can be got access to by branch road search coil or the branch sensor on this appropriate location.As described above, because branch road search coil or branch sensor are near the metallic conductor in the branch road of rotating rectifier, then when certain branch road of rotating rectifier during along with inswept successively this branch road search coil of the rotation of rotating rectifier or branch sensor, can produce a signal, this signal can be a pulse signal, and this pulse signal is the conducting tributary signal of this branch road.Described branch road search coil or branch sensor can get access to the conducting tributary signal of each bar branch road when conducting successively.Be understandable that, the conducting tributary signal be pulse signal only for for example, it also may be other forms of rule signal, such as sinusoidal signal etc., when the conducting tributary signal is other forms of rule signal, can carry out similar analysis, does not give unnecessary details at this.
Described acquisition module 10 can carry out synchronized sampling with cycle and the conducting tributary signal that gets access to, promptly in the cycle that gets access to, a plurality of conducting tributary signals that get access to are continuously carried out continuous sampling, can obtain the conducting tributary signal in this cycle, the quantity of the conducting tributary signal in this cycle is the quantity of branch road in the rotating rectifier.Be understandable that, in order to guarantee monitoring accuracy, can also in a plurality of cycles, carry out continuous sampling and analysis and judgement, but its concrete process similar analysis do not given unnecessary details at this.
In the specific implementation, a line state of rotating rectifier mainly is divided into two states, and a kind of is normal operating conditions (normal condition), and another kind is a malfunction.Conducting tributary signal in the described cycle that 20 pairs of described acquisition modules 10 of described state monitoring module obtain carries out a series of signal analysis and signal processing, comprise filtering and processing, processing procedure is analyzed in pulse missing judgements etc., thereby determine a line state, and can further determine to produce in the rotating rectifier the concrete branch road position of fault.
Need to prove that the branch road state monitoring apparatus of the rotating rectifier of the embodiment of the invention also can be connected with corresponding relay with host computer, functions such as the output of realization signal and man-machine interaction.
The embodiment of the invention can be monitored a line state of rotating rectifier, is beneficial to can access timely processing when branch road produces fault, guarantees the normal operation of generator.
See also Fig. 5, be the structural representation of second embodiment of the branch road state monitoring apparatus of rotating rectifier of the present invention; Identical with a last embodiment, described device comprises: acquisition module 10 and state monitoring module 20.In the present embodiment, described device further comprises:
In the specific implementation, described alarm module 30 is used for when the branch road of rotating rectifier is in malfunction, output alarm information, and its warning message can be flashing light warning message, audible alarm information, information display alarm information etc.Be understandable that, described alarm module 30 can be an alarm output module in the branch road state monitoring apparatus of described rotating rectifier, it is used for output alarm information, can include but not limited in the following equipment any one or more in the branch road state monitoring apparatus of described rotating rectifier: lamp, be used for carrying out flashing light, to reach the effect of warning according to the warning message of described alarm module 30 outputs; Loudspeaker or loud speaker are used for the warning message according to described alarm module 30 outputs, send the sound of warning; Display is used for the warning message according to described alarm module 30 outputs, shows the fault message of rotating diode, to reach the effect of warning.Particularly, being used to of comprising in the described device presents the kind and the quantity of equipment of the warning message of described alarm module 30 outputs to be determined according to the described alarm module 30 concrete type of alarms that adopt, and does not give unnecessary details at this.
The embodiment of the invention is sent warning monitoring branch road when producing fault, can make relevant staff in time handle and get rid of fault, has further improved the reliability and stability of generator operation.
For clearer explanation the present invention, will the acquisition module 10 in the branch road state monitoring apparatus of described rotating rectifier of the present invention be described in detail below.
See also Fig. 6, be the structural representation of the embodiment of acquisition module of the present invention; Described acquisition module 10 comprises:
In the specific implementation, as described above, because rotating rectifier is fixed on the rotor of generator, the cycle of then described rotating rectifier rotation also is the cycle of rotor, therefore, can obtain the cycle of rotating rectifier rotation by the cycle of obtaining rotor rotation.Particularly, can be at the epitrochanterian axle mark position (mark that is used for the mark rotor-position of generator, it is pre-set) near stator or support on an axle search coil 101 is installed, the described axle search coil 101 double signals of sensing a mark position, then the signal period apart of this that detects two secondary axes mark positions is the cycle that generator amature rotates, and also is the cycle of the rotating rectifier rotation that gets access to.Be understandable that the described device that is used to obtain the cycle of rotating rectifier rotation can also be axle sensor, it is concrete obtains principle and process can be carried out above-mentioned similar analysis, does not give unnecessary details at this.
At least one branch road search coil 102 is used for obtaining in real time, successively the conducting tributary signal of rotating rectifier;
In the specific implementation, as described above, after the structure of rotating rectifier was determined, the ON time of the branch road of rotating rectifier had periodically.Therefore, can make it near the metallic conductor in branch road of rotating rectifier, with the Continuity signal of the branch road of induction rotating rectifier by at least one branch road search coil 102 of fixed installation in position.In the specific implementation, described suitable position can be on the stator or support by the rotating rectifier, at least one the branch road search coil or the branch sensor that are positioned at this appropriate location need meet the following conditions: when every branch road of rotating rectifier during in its ON time section conducting, its Continuity signal all can be got access to by branch road search coil or the branch sensor on this appropriate location.As described above, because branch road search coil or branch sensor are near the metallic conductor in the branch road of rotating rectifier, then when certain branch road of rotating rectifier during along with inswept successively this branch road search coil of the rotation of rotating rectifier or branch sensor, can produce a pulse signal, this pulse signal is the conducting tributary signal of this accessed branch road of described branch road search coil or branch sensor.Described at least one branch road search coil or branch sensor can get access to the conducting tributary signal of each bar branch road when conducting successively.Be understandable that, the conducting tributary signal be pulse signal only for for example, it also may be other forms of rule signal, such as sinusoidal signal etc., when the conducting tributary signal is other forms of rule signal, can carry out similar analysis, does not give unnecessary details at this.
In the specific implementation, because rotating rectifier is in rotary state when normal operation always, what branch road search coil 102 (or branch sensor) can not stop responds to and obtains the conducting tributary signal, in order to guarantee that all conducting tributary signals that branch road search coil 102 (or branch sensor) is obtained are signals of rotating rectifier all branch roads when rotating a circle, therefore, need in the cycle that described axle search coil 101 (or axle sensor) is obtained, sample to the signal that described branch road search coil 102 (or branch sensor) obtains, all come from the one-period of rotating rectifier (or rotor) rotation to guarantee all conducting tributary signals that described branch road search coil 102 (or branch sensor) is obtained.Particularly, described sampling unit 103 can be with cycle and the conducting tributary signal synchronized sampling that gets access to, promptly in the cycle that gets access to, a plurality of conducting tributary signals that get access to are continuously carried out continuous sampling, can obtain the conducting tributary signal in this cycle, the quantity of the conducting tributary signal in this cycle is the quantity of branch road in the rotating rectifier.Be understandable that, in order to guarantee monitoring accuracy, can also in a plurality of cycles, carry out continuous sampling and analysis and judgement, but its concrete process similar analysis do not given unnecessary details at this.
The embodiment of the invention is obtained the cycle of rotating rectifier rotation by installation shaft search coil or axle sensor, and, the reliability and stability of generator operation have been improved by branch road that at least one branch road search coil or branch sensor come to obtain in real time, the successively rotating rectifier signal when the conducting is installed.
Need to prove that the described device that is used in real time, in turn obtaining the conducting tributary signal of rotating rectifier rotation can also be branch sensor, it is concrete obtains principle and process can be carried out above-mentioned similar analysis, does not give unnecessary details at this.In addition, at the rotating rectifier of different structure, need the quantity of hard-wired branch road search coil or branch sensor also inequality.
The branch road search coil that to install the rotating rectifier of different structure or the situation of branch sensor describe in detail below.
See also Fig. 7, be the design sketch of first embodiment of the concrete installation of search coil in the acquisition module of the present invention; As shown in Figure 7:
Described axle search coil 101 (or axle sensor) is installed on the axle mark position of the rotor neighbouring stator or support, a branch road search coil 102 (or branch sensor) is installed on the rotating rectifier neighbouring stator or support, the signal of 103 pairs of axle search coils 101 of described sampling unit (or axle sensor) and the output of this branch road search coil 102 (or branch sensor) carries out synchronized sampling, can obtain the conducting tributary signal of the rotating rectifier in the cycle.
By shown in Figure 7, the quantity of the branch road search coil of present embodiment or the mounting means of branch sensor and installation is applicable to the rotating rectifier of structure shown in Figure 1, be understandable that present embodiment also is applicable to the rotating rectifier of similar structure shown in Figure 1, does not give unnecessary details at this.
Rotating rectifier at Fig. 2 or structure shown in Figure 3, because every branch road includes positive polarity diode and negative polarity diode, according to the operating characteristic of rectification circuit as can be known, the conducting simultaneously of positive polarity diode on the same branch road and negative polarity diode, therefore, if adopt the mounting means of Fig. 7 a branch road search coil or branch sensor are installed, then it only can get access to the signal of one of them diode in every branch road, Continuity signal in the time of can't intactly getting access to all diode current flows of every branch road of rotating rectifier, therefore, need increase the quantity of branch road search coil or branch sensor in position, to guarantee that rotating rectifier is in the time of rotating a week (being in the one-period), conducting tributary signal when branch road search coil or branch sensor can completely get access to all branch road conductings, and in rotating rectifier rotates time in a week (being in the one-period), the conducting tributary signal when branch road search coil or branch sensor only can get access to a conducting of every branch road.
See also Fig. 8, be first design sketch of second embodiment of the concrete installation of search coil in the acquisition module of the present invention; In the present embodiment, concrete installation site and the mode of axle search coil 101 (or axle sensor) is identical with installation site and the mode among the last embodiment, does not give unnecessary details at this.
As shown in Figure 8, in the branch road of rotating rectifier, positive polarity diode and negative polarity diode are connected to jointly and form a branch road (can referring to branch road a, b, c, the d among the figure) on the same group of armature winding, therefore, by branch road search coil or branch sensor induction tributary signal are installed on the rotating rectifier next door, then can be according to the tributary signal of sensing a line state is judged to rectifier.According to the operating characteristic of rectification circuit as can be known, the conducting simultaneously of positive polarity diode on the same branch road and negative polarity diode, therefore, can adopt two branch road search coils or branch sensor, conducting tributary signal when one of them branch road search coil or branch sensor obtain the positive polarity diode current flow, the conducting tributary signal when another branch road search coil or branch sensor obtain the negative polarity diode current flow.In like manner, as described above, because every branch road conducting of rotating rectifier has periodically, therefore, positive polarity diode, negative polarity diode current flow on its every branch road also has periodically, that is to say that the positive polarity diode on the same branch road, the ON time of negative polarity diode can determine that the ON time difference also can be determined.Therefore, when two branch road search coils or branch sensor are installed, can make between the two the installation site to possess certain angle, the size of this angle is determined by the positive polarity diode and the ON time difference between the negative polarity diode of every branch road.
Specifically as shown in Figure 8, the conducting tributary signal when one of them the branch road search coil (or branch sensor) 102 that possesses certain angle is used to survey the positive polarity diode current flow of each bar branch road, this branch road search coil 102 is called first search coil; Conducting tributary signal when another branch road search coil (or branch sensor) 102 is used to survey the negative polarity diode current flow of each bar branch road, this branch road search coil 102 is called second search coil.Rotating rectifier is rotated along the direction of arrow among the figure.Conducting tributary signal when setting the first branch road search coil and getting access to the positive polarity diode current flow of branch road a between at a time.
Please in the lump referring to Fig. 9, be second design sketch of second embodiment of the concrete installation of search coil in the acquisition module of the present invention; When after after a while, during negative polarity diode current flow among the branch road a of rotating rectifier, this branch road a just in time turns to the second search coil place shown in Figure 8, and obtained its conducting tributary signal by this second branch road detection, the moment of the conducting tributary signal when then the first branch road search coil obtains the positive polarity diode current flow, the moment of the conducting tributary signal when obtaining the negative polarity diode current flow with the second branch road search coil, rotating rectifier is the first branch road search coil and the second branch road search coil (just promptly is being respectively applied for detection in the two the angle that the time interval turned over, two branch road search coils of the conducting tributary signal during the negative polarity diode current flow or branch sensor 102) between the angle that exists, can two branch road search coils (or branch sensor) 102 be installed respectively by this angle.
Be understandable that, with respect to a last embodiment, present embodiment adopts two branch road search coils to survey the conducting tributary signal of rotating rectifier, which kind of state the branch road that can judge rotating rectifier comparatively accurately is in, also can further judge accurately in the branch road of rotating rectifier, the state of positive polarity diode and negative polarity diode, when the branch road of rotating rectifier breaks down, can determine further that it still is that the negative polarity diode breaks down that the positive polarity diode breaks down, and makes things convenient for the timely eliminating of fault.
By Fig. 8 or shown in Figure 9, the quantity of the branch road search coil of present embodiment or the mounting means of branch sensor and installation is applicable to the rotating rectifier of structure shown in Figure 2, be understandable that, present embodiment also is applicable to the rotating rectifier of similar structure shown in Figure 2, such as: the rotating rectifier that also is applicable to structure shown in Figure 3, can carry out similar analysis under this situation, not give unnecessary details at this.In addition, in the rotating rectifier of present embodiment, when adopting plural branch road search coil or branch sensor to judge, can carry out similar analysis, not give unnecessary details at this.
Need to prove that install among the embodiment for above-mentioned two, after the structure of rotating rectifier was determined, installation quantity and mounting means that its branch road search coil or branch sensor are adopted also can correspondingly be determined.
The embodiment of the invention is obtained the cycle of rotating rectifier rotation by installation shaft search coil or axle sensor, and, the reliability and stability of generator operation have been improved by branch road that at least one branch road search coil or branch sensor come to obtain in real time, the successively rotating rectifier signal when the conducting is installed.
For clearer explanation the present invention, will the state monitoring module 20 in the branch road state monitoring apparatus of described rotating rectifier of the present invention be described in detail below.
See also Figure 10, be the structural representation of the embodiment of state monitoring module of the present invention; Described state monitoring module 20 comprises:
In the specific implementation, owing in the signal that branch road search coil (or branch sensor) is sensed interference signals such as many clutters and high order harmonic component are arranged, therefore, for the accuracy that guarantees a line state is determined, 201 pairs of interior conducting tributary signals of described cycle of described filter unit carry out Filtering Processing, eliminate interference signal.
In the specific implementation, theoretically, because the diode model in each branch road of rotating rectifier is identical, the amplitude of the conducting tributary signal that each branch road search coil (or branch sensor) is sensed should be identical, but because the layout of each branch road search coil (or branch sensor), install, the influence of the factors such as error of coil itself, the amplitude of actual accessed described conducting tributary signal has bigger difference, therefore, in order to guarantee the accuracy of follow-up judgement, need carry out normalized to each conducting tributary signal, make the amplitude of each conducting tributary signal basic identical.Described normalization unit 202 is determined a normalized amplitude according to actual needs, makes the amplitude of normalized each conducting tributary signal be equal to this normalized amplitude.Be understandable that, described normalized amplitude can pre-set according to actual needs, the process of this setting can by the related work personnel with host computer that the branch road state monitoring apparatus of the described rotating rectifier of the embodiment of the invention is connected on carry out, do not give unnecessary details at this.
Please, be the signal waveforms after state monitoring module 20 processing of the present invention in the lump referring to Figure 11; Figure 11 has reflected after described state monitoring module 20 a series of processing, obtains the oscillogram of the conducting tributary signal in the one-period at last.Wherein, the signal in cycle of reflection rotating rectifier be a ripple in the middle of in the oscillogram of Figure 11 in the oscillogram, and this cycle, interior conducting tributary signal was a ripple continuous, that comprise a plurality of pulses.In the specific implementation, the number of the pulse that is embodied in the one-period T has promptly been represented the quantity of the branch road on the rotating rectifier, described Condition Monitoring Unit 203 is promptly analyzed this oscillogram, determine a line state, if this oscillogram is the oscillogram of complete pulse as shown in figure 11, determine that then a line state is a normal condition; If certain pulse missing determines that then a line state is a malfunction.
Be understandable that, oscillogram shown in Figure 11 is only for giving an example, as described above, when the signal that obtains is not a pulse signal, but during other forms of rule signal, its oscillogram also can correspondingly change, in addition, also can not adopt the form of oscillogram, and adopt other forms to show signal, can carry out similar analysis under other situations, not give unnecessary details at this.
The embodiment of the invention is sent warning monitoring branch road when producing fault, can make relevant staff in time handle and get rid of fault, has further improved the reliability and stability of generator operation.
See also Figure 12, be the structural representation of first embodiment of Condition Monitoring Unit of the present invention; Described Condition Monitoring Unit 203 comprises:
Judging unit 31 is used to judge in the described cycle after the normalized whether exist amplitude to be lower than the conducting tributary signal of default threshold value;
In the specific implementation, as described above, the branch road state monitoring apparatus of described rotating rectifier can receive the threshold value that the related work personnel are provided with by host computer, this threshold value is used for comparing with the amplitude of conducting tributary signal, need to prove that described default threshold value can be identical with above-mentioned default normalized amplitude, also can be different, particularly, described default threshold value is smaller or equal to default normalized amplitude.Consider for different rotating rectifiers, the amplitude of its conducting tributary signal is different, even identical rotating rectifier, after if branch road search coil (or branch sensor) overhauls, because the change in location of branch road search coil can cause that also conducting tributary signal amplitude changes, therefore, should default threshold value be not well-determined, it is provided with at actual conditions, and other situations can be carried out similar analysis, do not give unnecessary details at this.
In the specific implementation, have the conducting tributary signal of amplitude less than this threshold value if described judging unit 31 is judged in this period T, then status determining unit 32 is judged the pulse missing of this amplitude correspondence, and then the branch road of definite rotating rectifier is in malfunction; Otherwise, determine that the branch road of rotating rectifier is in normal condition.
Please, be the fault waveform figure of Condition Monitoring Unit monitoring of the present invention in the lump referring to Figure 13; Set among Figure 11, the normalized amplitude that default threshold value equals to preset, among Figure 13, described judging unit 31 is by comparison, the amplitude of judging the pulse signal that its circle encloses is starkly lower than default threshold value, and described status determining unit 32 determines that the branch road of rotating rectifier produces fault.
Oscillogram when the branch road state monitoring apparatus of described rotating rectifier can be with fault is preserved, and pass through interface, such as: TCP/IP (Transmission Control Protocol/Internet Protocol, transmission control protocol/internet interconnection protocol) interface, oscillogram during with this fault transfers in the coupled display, is prompted to the related work personnel; Be understandable that described device also can be preserved the original signal waveform figure that described acquisition module 10 gets access to, and transfer to display and show etc., do not give unnecessary details at this.
The embodiment of the invention can be handled and the threshold value judgement the signal that gets access to, and determines a line state, has improved the reliability and stability of generator operation.
See also Figure 14, be the structural representation of second embodiment of Condition Monitoring Unit of the present invention; Identical with a last embodiment, described Condition Monitoring Unit 203 comprises: judging unit 31 and status determining unit 32.In the present embodiment, described Condition Monitoring Unit 203 further comprises:
In the specific implementation, begin sampling owing to obtain the signal of a mark position for the first time from the axle search coil, and the conducting tributary signal that the branch road search coil gets access to is carried out synchronized sampling, Cai Yang first time point then, when promptly should the cycle initial, the branch road of the pairing rotating rectifier of axle mark position be first branch road; When end cycle, the branch road of the pairing rotating rectifier of axle mark position is the most last branch road.Because the direction of rotation of rotating rectifier is determined, and the quantity of branch road is also determined, therefore, the quantity and the position of the conducting tributary signal in the cycle are also determined, such as: first branch road is reflected in and is first impulse wave on the oscillogram, second branch road is reflected in and is second impulse wave on the oscillogram, and the most last branch road is reflected to and is last impulse wave on the oscillogram.Described position determination unit 33 is used for being lower than in amplitude on the oscillogram conducting tributary signal pairing position in the described cycle of default threshold value, determines that promptly which impulse wave this pulse of losing is.
Fault branch determining unit 34 is used for determining the fault branch of rotating rectifier according to described position determination unit 33 determined positions.
In the specific implementation, as described above, described position determination unit 33 has determined which pulse the pulse of losing is, then is reflected on the rotating rectifier, then corresponds to which bar branch road, can determine that thus this branch road is a fault branch.
Be understandable that, if rotating rectifier is at the uniform velocity rotation, described fault branch determines that 34 also can determine fault branch according to the pulse of losing time corresponding section in the described cycle, be specially: if be at the uniform velocity rotation, and the always total N bar branch road of rotating rectifier, then first branch road conducting in the time period of 0-T/N, being reflected as on oscillogram in time period of 0-T/N has an impulse wave; The conducting in the time period of T/N-2T/N of second branch road, being reflected as on oscillogram in time period of T/N-2T/N has an impulse wave; The conducting in time period of (N-1) T/N-T in the end of the most last branch road, being reflected as on oscillogram in time period of (N-1) T/N-T has an impulse wave.By the pairing time period of the pulse of determining to lose, can determine corresponding fault branch.Certainly, can also carry out determining of fault branch, not give unnecessary details at this by other similar fashion.
When the embodiment of the invention produces fault at the branch road that monitors rotating rectifier, can determine the fault branch of rotating rectifier, be beneficial to relevant staff and fault is in time handled and got rid of according to producing location of fault.
For clearer explanation the present invention, will the branch road state monitoring method by the performed rotating rectifier of the branch road state monitoring apparatus of above-mentioned rotating rectifier of the present invention be described in detail below.
See also Figure 15, be the flow chart of first embodiment of the branch road state monitoring method of rotating rectifier of the present invention; Described method comprises:
S101 obtains the cycle of rotating rectifier rotation, and obtains the conducting tributary signal of rotating rectifier in this cycle successively;
In the specific implementation, as described above, because rotating rectifier is fixed on the rotor of generator, the cycle of then described rotating rectifier rotation also is the cycle of rotor, and therefore, described S101 can obtain the cycle of rotating rectifier rotation by the cycle of obtaining rotor rotation.Particularly, on near stator the epitrochanterian axle mark position of generator or support, a search coil or transducer are installed, this search coil or transducer are called as a search coil or axle sensor, described axle search coil or the double signal of sensing a mark position of axle sensor, then the signal period apart of this that detects two secondary axes mark positions is the cycle that generator amature rotates, and also is the cycle of the rotating rectifier rotation that gets access to.After the structure of rotating rectifier was determined, the ON time of the branch road of rotating rectifier had periodically, that is: the branch road of rotating rectifier is in the normally state in certain time period, is in not on-state in certain time period.Described S101 can be by installing branch road search coil or branch sensor in position, make it near the metallic conductor in branch road of rotating rectifier, with the Continuity signal of the branch road of induction rotating rectifier.In the specific implementation, described suitable position can be on the stator or support by the rotating rectifier, the branch road search coil or the branch sensor that are positioned at this appropriate location need meet the following conditions: when every branch road of rotating rectifier during in its ON time section conducting, its Continuity signal all can be got access to by branch road search coil or the branch sensor on this appropriate location.As described above, because branch road search coil or branch sensor are near the metallic conductor in the branch road of rotating rectifier, then when certain branch road of rotating rectifier during along with inswept successively this branch road search coil of the rotation of rotating rectifier or branch sensor, can produce a signal, this signal can be a pulse signal, and this pulse signal is the conducting tributary signal of this branch road.Described branch road search coil or branch sensor can get access to the conducting tributary signal of each bar branch road when conducting successively.Be understandable that, the conducting tributary signal be pulse signal only for for example, it also may be other forms of rule signal, such as sinusoidal signal etc., when the conducting tributary signal is other forms of rule signal, can carry out similar analysis, does not give unnecessary details at this.
Described S101 can be with cycle and the conducting tributary signal synchronized sampling that gets access to, promptly in the cycle that gets access to, a plurality of conducting tributary signals that get access to are continuously carried out continuous sampling, can obtain the conducting tributary signal in this cycle, the quantity of the conducting tributary signal in this cycle is the quantity of branch road in the rotating rectifier.Be understandable that, in order to guarantee monitoring accuracy, can also in a plurality of cycles, carry out continuous sampling and analysis and judgement, but its concrete process similar analysis do not given unnecessary details at this.
S102 carries out analyzing and processing to the conducting tributary signal in the described cycle, determines a line state of rotating rectifier.
In the specific implementation, a line state of rotating rectifier mainly is divided into two states, and a kind of is normal operating conditions (normal condition), and another kind is a malfunction.Conducting tributary signal in the described cycle that described S102 obtains described S101 carries out a series of signal analysis and signal processing, comprise filtering and processing, processing procedure is analyzed in pulse missing judgements etc., thereby determine a line state, and can further determine to produce in the rotating rectifier the concrete branch road position of fault.
The embodiment of the invention can be monitored a line state of rotating rectifier, is beneficial to can access timely processing when branch road produces fault, guarantees the normal operation of generator.
See also Figure 16, be the flow chart of second embodiment of the branch road state monitoring method of rotating rectifier of the present invention;
S201 obtains the cycle of rotating rectifier rotation, and obtains the conducting tributary signal of rotating rectifier in this cycle successively;
S202 carries out analyzing and processing to the conducting tributary signal in the described cycle, determines a line state of rotating rectifier.
In the present embodiment, described S201-S202 is identical with the S101-S102 step of a last embodiment, does not give unnecessary details at this.
S203 when the branch road of determining rotating rectifier is in malfunction, exports corresponding warning message.
In the specific implementation, when described S203 is in malfunction when the branch road of rotating rectifier, output alarm information, its warning message can be flashing light warning message, audible alarm information, information display alarm information etc.Be understandable that, described S203 can adopt an alarm output module in the branch road state monitoring apparatus of described rotating rectifier, come output alarm information, can include but not limited in the following equipment any one or more in the branch road state monitoring apparatus of described rotating rectifier: lamp, be used for carrying out flashing light, to reach the effect of warning according to the warning message of described alarm module 30 outputs; Loudspeaker or loud speaker are used for the warning message according to described S203 output, send the sound of warning; Display is used for the warning message according to described S203 output, shows the fault message of rotating diode, to reach the effect of warning.Particularly, being used to of comprising in the described device presents the kind and the quantity of equipment of the warning message of described S203 output to be determined according to the concrete type of alarm that adopts of described S203, does not give unnecessary details at this.
The embodiment of the invention is sent warning monitoring branch road when producing fault, can make relevant staff in time handle and get rid of fault, has further improved the reliability and stability of generator operation.
See also Figure 17, be the flow chart of the 3rd embodiment of the branch road state monitoring method of rotating rectifier of the present invention.
S301 obtains the cycle that rotating rectifier rotates by axle search coil or axle sensor;
In the specific implementation, as described above, because rotating rectifier is fixed on the rotor of generator, the cycle of then described rotating rectifier rotation also is the cycle of rotor, therefore, can obtain the cycle of rotating rectifier rotation by the cycle of obtaining rotor rotation.Particularly, can near stator the epitrochanterian axle mark position of generator or support, an axle search coil or axle sensor be installed, described S301, by described axle search coil or the double signal of sensing a mark position of axle sensor, then the signal period apart of this that detects two secondary axes mark positions is the cycle that generator amature rotates, and also is the cycle of the rotating rectifier rotation that gets access to.The concrete installation site of described axle search coil or axle sensor can not given unnecessary details at this referring to Fig. 7-Fig. 9.
S302 obtains the conducting tributary signal of rotating rectifier in real time, successively by at least one branch road search coil or branch sensor;
In the specific implementation, as described above, after the structure of rotating rectifier is determined, the ON time of the branch road of rotating rectifier has periodically, that is to say that the branch road of rotating rectifier is the normally state that is in, and is in not on-state in certain time period in certain time period.Therefore, can make it near the metallic conductor in branch road of rotating rectifier, with the Continuity signal of the branch road of induction rotating rectifier by at least one branch road search coil of fixed installation in position.In the specific implementation, described suitable position can be on the stator or support by the rotating rectifier, at least one the branch road search coil or the branch sensor that are positioned at this appropriate location need meet the following conditions: when every branch road of rotating rectifier during in its ON time section conducting, its Continuity signal all can be got access to by branch road search coil or the branch sensor on this appropriate location.As described above, because branch road search coil or branch sensor are near the metallic conductor in the branch road of rotating rectifier, then when certain branch road of rotating rectifier during along with inswept successively this branch road search coil of the rotation of rotating rectifier or branch sensor, can produce a pulse signal, this pulse signal is the conducting tributary signal of this accessed branch road of described branch road search coil or branch sensor.Described at least one branch road search coil or branch sensor can get access to the conducting tributary signal of each bar branch road when conducting successively.Be understandable that, the conducting tributary signal be pulse signal only for for example, it also may be other forms of rule signal, such as sinusoidal signal etc., when the conducting tributary signal is other forms of rule signal, can carry out similar analysis, does not give unnecessary details at this.
Particularly, at the rotating rectifier of different structure, the quantity of hard-wired branch road search coil of described needs or branch sensor is also inequality.The detailed introduction of the branch road search coil that the rotating rectifier of different structure is installed or the situation of branch sensor can not given unnecessary details at this referring to above-mentioned Fig. 7-9.
S303 in the described cycle of obtaining, to described conducting tributary signal continuous sampling of obtaining, obtains the conducting tributary signal of rotating rectifier in this cycle;
In the specific implementation, because rotating rectifier is in rotary state when normal operation always, what branch road search coil (or branch sensor) can not stop responds to and obtains the conducting tributary signal, in order to guarantee that all conducting tributary signals that branch road search coil (or branch sensor) is obtained are signals of rotating rectifier all branch roads when rotating a circle, therefore, need in the cycle that described axle search coil (or axle sensor) is obtained, sample to the signal that described branch road search coil (or branch sensor) obtains, all come from the one-period of rotating rectifier (or rotor) rotation to guarantee all conducting tributary signals that described branch road search coil (or branch sensor) is obtained.Particularly, described S303 can be with cycle and the conducting tributary signal synchronized sampling that gets access to, promptly in the cycle that gets access to, a plurality of conducting tributary signals that get access to are continuously carried out continuous sampling, can obtain the conducting tributary signal in this cycle, the quantity of the conducting tributary signal in this cycle is the quantity of branch road in the rotating rectifier.Be understandable that, in order to guarantee monitoring accuracy, can also in a plurality of cycles, carry out continuous sampling and analysis and judgement, but its concrete process similar analysis do not given unnecessary details at this.
S301-S302 in the present embodiment is the concrete refinement step of the S201 among the last embodiment; It simultaneously also is the concrete refinement step of the S101 among first embodiment of branch road state monitoring method of rotating rectifier of the present invention.
S304 carries out Filtering Processing to the conducting tributary signal in the described cycle, described conducting tributary signal is produced the interference signal of disturbing with filtering;
In the specific implementation, owing in the signal that branch road search coil (or branch sensor) is sensed interference signals such as many clutters and high order harmonic component are arranged, therefore, for the accuracy that guarantees a line state is determined, described S304 carries out Filtering Processing to the conducting tributary signal in the described cycle, eliminates interference signal.
S305 carries out normalized to the described conducting tributary signal after the Filtering Processing;
In the specific implementation, theoretically, because the diode model in each branch road of rotating rectifier is identical, the amplitude of the conducting tributary signal that each branch road search coil (or branch sensor) is sensed should be identical, but because the layout of each branch road search coil (or branch sensor), install, the influence of the factors such as error of coil itself, the amplitude of actual accessed described conducting tributary signal has bigger difference, therefore, in order to guarantee the accuracy of follow-up judgement, need carry out normalized to each conducting tributary signal, make the amplitude of each conducting tributary signal basic identical.Described S305 determines a normalized amplitude according to actual needs, makes the amplitude of normalized each conducting tributary signal be equal to this normalized amplitude.Be understandable that, described normalized amplitude can pre-set according to actual needs, the process of this setting can by the related work personnel with host computer that the branch road state monitoring apparatus of the described rotating rectifier of the embodiment of the invention is connected on carry out, do not give unnecessary details at this.Particularly, the oscillogram after the normalized can not given unnecessary details at this referring to shown in Figure 11.
S306 judges the conducting tributary signal that whether exists amplitude to be lower than default threshold value in the described cycle after the normalized, if judged result is for being then to change S307 over to; Otherwise, change S310 over to.
In the specific implementation, as described above, the branch road state monitoring apparatus of described rotating rectifier can receive the threshold value that the related work personnel are provided with by host computer, this threshold value is used for comparing with the amplitude of conducting tributary signal, need to prove that described default threshold value can be identical with above-mentioned default normalized amplitude, also can be different, particularly, described default threshold value is smaller or equal to default normalized amplitude.Consider for different rotating rectifiers, the amplitude of its conducting tributary signal is different, even identical rotating rectifier, after if branch road search coil (or branch sensor) overhauls, because the change in location of branch road search coil can cause that also conducting tributary signal amplitude changes, therefore, should default threshold value be not well-determined, it is provided with at actual conditions, and other situations can be carried out similar analysis, do not give unnecessary details at this.
There is the conducting tributary signal of amplitude in this period T if described S306 judges, then judge the pulse missing of this amplitude correspondence, and then the branch road of definite rotating rectifier be in malfunction less than this threshold value; Otherwise, determine that the branch road of rotating rectifier is in normal condition.
S307 determines that the branch road of rotating rectifier is in malfunction;
Particularly, fault waveform figure can not give unnecessary details at this referring to shown in Figure 13.
S308 determines that amplitude is lower than conducting tributary signal pairing position in the described cycle of default threshold value;
In the specific implementation, begin sampling owing to obtain the signal of a mark position for the first time from the axle search coil, and the conducting tributary signal that the branch road search coil gets access to is carried out synchronized sampling, Cai Yang first time point then, when promptly should the cycle initial, the branch road of the pairing rotating rectifier of axle mark position be first branch road; When end cycle, the branch road of the pairing rotating rectifier of axle mark position is the most last branch road.Because the direction of rotation of rotating rectifier is determined, and the quantity of branch road is also determined, therefore, the quantity and the position of the conducting tributary signal in the cycle are also determined, such as: first branch road is reflected in and is first impulse wave on the oscillogram, second branch road is reflected in and is second impulse wave on the oscillogram, and the most last branch road is reflected to and is last impulse wave on the oscillogram.Described S308 is lower than conducting tributary signal pairing position in the described cycle of default threshold value in amplitude on the oscillogram, determines that promptly which impulse wave this pulse of losing is.
S309 according to described position, determines the fault branch of rotating rectifier; Afterwards, finish;
In the specific implementation, as described above, described S308 has determined which pulse the pulse of losing is, then is reflected on the rotating rectifier, then corresponds to which bar branch road, and S309 can determine that thus this branch road is a fault branch.
Be understandable that, if rotating rectifier is at the uniform velocity rotation, described S309 also can determine fault branch according to the pulse of losing time corresponding section in the described cycle, be specially: if be at the uniform velocity rotation, and the always total N bar branch road of rotating rectifier, then first branch road conducting in the time period of 0-T/N, being reflected as on oscillogram in time period of 0-T/N has an impulse wave; The conducting in the time period of T/N-2T/N of second branch road, being reflected as on oscillogram in time period of T/N-2T/N has an impulse wave; The conducting in time period of (N-1) T/N-T in the end of the most last branch road, being reflected as on oscillogram in time period of (N-1) T/N-T has an impulse wave.By the pairing time period of the pulse of determining to lose, can determine corresponding fault branch.Certainly, can also carry out determining of fault branch, not give unnecessary details at this by other similar fashion.
Be understandable that, after having determined fault branch, also exportable corresponding warning message, the branch road position so that further prompting related work personnel are specifically broken down is beneficial to the timely eliminating of fault.
S310 determines that the branch road of rotating rectifier is in normal condition.
S304-S309/S310 in the present embodiment is the concrete refinement step of the S202 among the last embodiment, simultaneously also is the concrete refinement step of the S102 among first embodiment of branch road state monitoring method of rotating rectifier of the present invention.
When the embodiment of the invention produces fault at the branch road that monitors rotating rectifier, can determine the fault branch of rotating rectifier, be beneficial to relevant staff and fault is in time handled and got rid of according to producing location of fault.
Description by the foregoing description, the embodiment of the invention is by obtaining the cycle of rotating rectifier rotation, and obtain the conducting tributary signal of rotating rectifier in this cycle, conducting tributary signal in this cycle is carried out analyzing and processing, thereby determine a line state of rotating rectifier, realized status monitoring, be beneficial to the normal operation of generator the branch road of rotating rectifier; The embodiment of the invention is obtained the cycle of rotating rectifier rotation by installation shaft search coil or axle sensor, and by branch road that at least one branch road search coil or branch sensor come to obtain in real time, the successively rotating rectifier signal when the conducting is installed, and carry out signal processing and threshold value and judge, determine a line state, improved the reliability and stability of generator operation; When the embodiment of the invention produces fault at the branch road that monitors rotating rectifier, can determine the fault branch of rotating rectifier, be beneficial to relevant staff and fault is in time handled and got rid of according to producing location of fault; The embodiment of the invention is sent warning monitoring branch road when producing fault, can make relevant staff in time handle and get rid of fault, has further improved the reliability and stability of generator operation.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by computer program, described program can be stored in the computer read/write memory medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above disclosed only is preferred embodiment of the present invention, certainly can not limit the present invention's interest field with this, one of ordinary skill in the art will appreciate that all or part of flow process that realizes the foregoing description, and, still belong to the scope that invention is contained according to the equivalent variations that claim of the present invention is done.
Claims (12)
1. the branch road state monitoring method of a rotating rectifier is characterized in that, comprising:
Obtain the cycle of rotating rectifier rotation, and obtain the conducting tributary signal of rotating rectifier in this cycle successively;
Conducting tributary signal in the described cycle is carried out analyzing and processing, determine a line state of rotating rectifier.
2. the method for claim 1 is characterized in that, the described cycle of obtaining rotating rectifier rotation, and obtain the conducting tributary signal of rotating rectifier in this cycle successively, comprising:
Obtain the cycle of rotating rectifier rotation by axle search coil or axle sensor;
Obtain the conducting tributary signal of rotating rectifier in real time, successively by at least one branch road search coil or branch sensor;
In the described cycle of obtaining,, obtain the conducting tributary signal of rotating rectifier in this cycle to described conducting tributary signal continuous sampling of obtaining.
3. method as claimed in claim 2 is characterized in that, described conducting tributary signal in the described cycle is carried out analyzing and processing, determines a line state of rotating rectifier, comprising:
Conducting tributary signal in the described cycle is carried out Filtering Processing, described conducting tributary signal is produced the interference signal of disturbing with filtering;
Described conducting tributary signal after the Filtering Processing is carried out normalized;
According to the conducting tributary signal in the described cycle after the normalized, determine a line state of rotating rectifier.
4. method as claimed in claim 3 is characterized in that, and is described according to the conducting tributary signal in the described cycle after the normalized, determines a line state of rotating rectifier, comprising:
Whether judge in the described cycle after the normalized exists amplitude to be lower than the conducting tributary signal of default threshold value;
If judged result determines then that for not the branch road of rotating rectifier is in normal condition;
If judged result is for being, determine that then the branch road of rotating rectifier is in malfunction.
5. method as claimed in claim 4 is characterized in that, the branch road of described definite rotating rectifier is in after the malfunction, also comprises:
Determine that amplitude is lower than conducting tributary signal pairing position in the described cycle of default threshold value;
According to described position, determine the fault branch of rotating rectifier.
6. as each described method of claim 1-5, it is characterized in that, described conducting tributary signal in the described cycle carried out analyzing and processing, determine also to comprise after the line state of rotating rectifier:
When the branch road of determining rotating rectifier is in malfunction, export corresponding warning message.
7. the branch road state monitoring apparatus of a rotating rectifier is characterized in that, comprising:
Acquisition module is used to obtain the cycle of rotating rectifier rotation, and obtains the conducting tributary signal of rotating rectifier in this cycle successively;
State monitoring module is used for the conducting tributary signal in the described cycle is carried out analyzing and processing, determines a line state of rotating rectifier.
8. device as claimed in claim 7 is characterized in that, described acquisition module comprises:
Axle search coil or axle sensor are used to obtain the cycle that rotating rectifier rotates;
At least one branch road search coil or branch sensor are used for obtaining in real time, successively the conducting tributary signal of rotating rectifier;
Sampling unit was used in the described cycle of obtaining, and to described conducting tributary signal continuous sampling of obtaining, obtained the conducting tributary signal of rotating rectifier in this cycle.
9. device as claimed in claim 8 is characterized in that state monitoring module comprises:
Filter unit is used for the conducting tributary signal in the described cycle is carried out Filtering Processing, described conducting tributary signal is produced the interference signal of disturbing with filtering;
The normalization unit is used for the described conducting tributary signal after the described filtering unit filters processing is carried out normalized;
Condition Monitoring Unit is used for according to the conducting tributary signal in the described cycle after the described normalization unit normalized, determines a line state of rotating rectifier.
10. device as claimed in claim 9 is characterized in that, described Condition Monitoring Unit comprises:
Judging unit is used to judge in the described cycle after the normalized whether exist amplitude to be lower than the conducting tributary signal of default threshold value;
Status determining unit, be used for when described judgment unit judges result for not the time, determine that the branch road of rotating rectifier is in normal condition; When described judgment unit judges result when being, determine that the branch road of rotating rectifier is in malfunction.
11. device as claimed in claim 10 is characterized in that, described Condition Monitoring Unit also comprises:
Position determination unit is used for determining that amplitude is lower than conducting tributary signal pairing position in the described cycle of default threshold value;
The fault branch determining unit is used for determining the fault branch of rotating rectifier according to the determined position of described position determination unit.
12. as each described device of claim 7-11, it is characterized in that, also comprise:
Alarm module is used for exporting corresponding warning message when described state monitoring module determines that the branch road of rotating rectifier is in malfunction.
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| CN2010105033164A CN102005888A (en) | 2010-10-09 | 2010-10-09 | Branch state monitoring method and device of rotary rectifier |
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| CN2010105033164A CN102005888A (en) | 2010-10-09 | 2010-10-09 | Branch state monitoring method and device of rotary rectifier |
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| CN105548856A (en) * | 2015-12-28 | 2016-05-04 | 国电南瑞科技股份有限公司 | Brushless excitation-type generator set rotation diode detection system and method thereof |
| CN110470984A (en) * | 2019-07-11 | 2019-11-19 | 西北工业大学 | Three-level formula starter-generator faults in rotating rectifiers on-line checking and localization method |
| CN111682703A (en) * | 2020-05-15 | 2020-09-18 | 岭东核电有限公司 | Rotating diode state monitoring system and method for brushless excitation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103885372A (en) * | 2012-12-24 | 2014-06-25 | 中国移动通信集团河北有限公司 | Switch power supply rectifier module monitoring and early warning method and system |
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| CN103941187A (en) * | 2013-01-17 | 2014-07-23 | 罗伯特·博世有限公司 | Method for detecting an electrical fault in a generator assemblage, and means for implementation thereof |
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| CN105548856B (en) * | 2015-12-28 | 2018-07-06 | 国电南瑞科技股份有限公司 | Brushless excitation pattern generating set rotating diode detecting system and method |
| CN110470984A (en) * | 2019-07-11 | 2019-11-19 | 西北工业大学 | Three-level formula starter-generator faults in rotating rectifiers on-line checking and localization method |
| CN110470984B (en) * | 2019-07-11 | 2021-01-05 | 西北工业大学 | Fault on-line detection and positioning method for three-stage starter generator rotating rectifier |
| CN111682703A (en) * | 2020-05-15 | 2020-09-18 | 岭东核电有限公司 | Rotating diode state monitoring system and method for brushless excitation system |
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Application publication date: 20110406 |