CN104316851A - Method and device for automatically monitoring pollution of line insulators - Google Patents
Method and device for automatically monitoring pollution of line insulators Download PDFInfo
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- CN104316851A CN104316851A CN201410603754.6A CN201410603754A CN104316851A CN 104316851 A CN104316851 A CN 104316851A CN 201410603754 A CN201410603754 A CN 201410603754A CN 104316851 A CN104316851 A CN 104316851A
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Abstract
The invention discloses a method and device for automatically monitoring the pollution of line insulators, and belongs to the field of detection. The method includes the steps that an on-site monitoring device is hung on a line wire at the lower end of each set of insulators, and an opening CT is arranged on a hanging hook to be used for collecting the induced current on an electric transmission line; a leakage current CT is arranged at the connecting position of the line insulators and the line wire; a temperature and humidity sensor, a sound sensor, a pre-signal processing unit, a CPU unit, a wireless signal sending module and a transmitting antenna are arranged in the on-site monitoring device; the induced current collected by the opening CT provides working power for the on-site monitoring device after rectification and voltage stabilization are conducted, the on-site monitoring device collects an output signal of the leakage current CT, an output signal of the temperature and humidity sensor and an output signal of the sound sensor in real time, after the signals are preprocessed by the pre-signal processing unit, the progressive increase change speed of the pollution state or the pollution degree of each set of insulators is judged in real time, maintenance and defect elimination can be better conducted, and the operation safety and reliability of the electric transmission line can be greatly improved.
Description
Technical field
The invention belongs to detection field, particularly relate to a kind of automatic monitoring method for the contaminated degree of overhead transmission line insulator and device.
Background technology
Insulator is a kind of special insulation control in the many components of transmission line of electricity, and it is usually implemented with the form of insulator chain and uses, and belongs to the assembly of flexible suspension transmission pressure; Usually also the multiple insulators being connected in series use are in groups called insulator chain in the industry.
Insulator chain (Insulator String) refers to that two or more insulator element is combined, and for hanging wire and making wire and shaft tower and the earth insulate, it plays very important effect in high pressure overhead power line.
But insulator (or insulator chain, lower with) Performance Decay can occur in long-time running and causes insulation breakdown, if find not in time to cause electrical network single-phase earthing, affect electrical network and normally run and even have a power failure.On the other hand when the insulator in circuit works in contaminated environment, also can there is insulation and decline in insulator surface, cause the phenomenons such as electric leakage, cause potential safety hazard, jeopardize the life security of people.
Along with developing rapidly of power construction, the continuous expansion of electrical network scale, the power grid construction under MODEL OVER COMPLEX TOPOGRAPHY and plant maintenance work also get more and more.Overhead transmission line as electric power conveying tie has dispersed large, distance, be difficult to make an inspection tour and the feature such as maintenance, therefore carries out long-range automatic monitoring to the pollution degree parameter of electric transmission line isolator and becomes a urgently job.
The pollution degree of insulator, refers to the pollution level of geographic area certain residing for insulator.International conference on large HV electric systems the 33rd working group of academic board 042, recommends the measuring method of five kinds of conventional insulator contaminations, that is:
1) equivalent salt density method;
2) surface electrical inducing defecation by enema and suppository;
3) pollution flashover gradient method;
4) maximum leakage current method;
5) current impulse counting method;
Salt is close, conductance, gradient and leakage current are 4 parameters characterizing insulator dirty degree.
At present, in actual applications, judge the contaminated degree of insulator (i.e. aforesaid insulator dirty degree, lower same) generally adopt salt density measurement method to carry out sampling assessment, null method of measure is adopted to insulator breakdown, staff all wants ascend operation, and workload is large, and there is certain risk.
In network system now, the quantity of insulator is large, have a very wide distribution, ruuning situation is complicated, and this carries out manual monitoring test to all insulators, will there is very large difficulty, if survey sample, but cannot meet power grid security requirement.
Summary of the invention
Technical matters to be solved by this invention is to provide the stained automatic monitoring method of a kind of line insulator and device, its leakage current by on-line measurement line insulator and electric discharge sound intensity, to the stained monitoring state of line insulator, automatically the stained state of insulator, is drawn exactly, can according to the incremental variations speed of the stained state of insulator, predict the stained state of insulator in advance and then carry out defeat elimination, can greatly improve transmission line of electricity operational reliability, greatly can improve the operational reliability of transmission line of electricity.
Technical scheme of the present invention is: provide a kind of line insulator stained automatic monitoring method, comprise the stained monitoring state to group line insulator each on transmission line of electricity, upper end and the power transmission line column bar of described line insulator are connected and fixed, the lower end of described line insulator is fixed with the line wire of transmission line of electricity, it is characterized in that described automatic monitoring method comprises the following steps:
A, a hanged hook is set on the line wire often organizing insulator lower end, for hanging, fixing a local monitoring device;
Temperature Humidity Sensor, sound transducer, advance signal processing unit, CPU element, wireless signal sending module and emitting antenna are set in B, at the scene supervising device;
C, transmission line of electricity by way of transformer station or Control Room a ground base station is set, for receiving the wireless communication signals that described local monitoring device sends;
D, junction at described line insulator and line wire, arrange a leakage current CT, and what described leakage current CT was sleeved on line insulator and line wire junction is connected and fixed on gold utensil;
The signal output part of E, described leakage current CT, Temperature Humidity Sensor and sound transducer, through described advance signal processing unit, correspondingly with described CPU element to connect, the I/O port of described CPU element, correspondingly with the signal input part of described wireless signal sending module connect, the signal output part of described wireless signal sending module is connected with emitting antenna;
F, on hanged hook, arrange an open C T, described open C T runs through described line wire and arranges, for gathering the induction current on transmission line of electricity;
The induction current that G, described open C T collect, after overcommutation, voltage stabilizing, for described local monitoring device provides working power, realize from circuit, getting energy function in real time or getting energy, energy-storage function, thus reach described local monitoring device " working power of asking for ", without the need to the powering mode of external power supply;
H, leakage current between described leakage current CT detection line insulator and circuit; Described Temperature Humidity Sensor gathers the humidity of environment residing for line insulator; Described sound transducer gathers intensity of sound during circuit insulator arc-over;
The output signal of leakage current CT, Temperature Humidity Sensor and sound transducer described in I, described local monitoring device Real-time Collection, after the pre-service of described advance signal processing unit, the CPU element in described local monitoring device obtains intensity of sound value, the leakage current values of insulator and the humidity value of atmospheric environment during insulator arc-over in real time;
J, local monitoring device by described wireless signal sending module and emitting antenna, by the intensity of sound value, leakage current values and the humidity value that gather, record be sent to described ground base station;
K. the related sound intensity level of each group of received line insulator, leakage current values and humidity value are carried out vertical or horizontal comparison by ground base station, judge stained state or the degree of each group of insulator;
L, by the record to the stained state of each group of insulator or degree numerical value, to compare, obtain stained state or the degree numerical value of each group of insulator, after the stained state of described insulator or degree numerical value exceed corresponding predetermined value, ground base station is to dispatching control center output alarm signal;
M, by the record to the stained state of each group of insulator or degree historical values, to compare, obtain the incremental variations speed of each group of stained state of insulator or degree numerical value, after the incremental variations speed of the stained state of described insulator or degree numerical value is greater than corresponding setting value, ground base station exports early warning signal to dispatching control center;
N, described automatic monitoring method carry out monitoring in real time, comprehensively to the stained state of group insulator each in transmission line of electricity or degree, by the mode of longitudinally contrast and across comparison, automatically stained state or the degree of insulator, is drawn exactly, according to the incremental variations speed of the stained state of insulator or degree numerical value, predict the stained state of insulator or degree in advance, and then contribute to carrying out defeat elimination, greatly can improve the safety and reliability that transmission line of electricity runs.
Wherein, described longitudinal comparison comprises to be carried out sorting or contrasting by the related sound intensity level of same group of not received in the same time line insulator, leakage current values and humidity value in chronological order.
Described lateral comparison comprises to be undertaken sorting or contrasting by the phase sequence of transmission line of electricity by the related sound intensity level of each group of line insulator received by a certain moment, leakage current values and humidity value.
Concrete, described advance signal processing unit at least comprises A/D change-over circuit.
Described wireless signal sending module is frequency microwave signal transmitting module circuit, 3G communication module circuit or GPRS data communication module circuit.
Further, when the line wire of described transmission line of electricity has electric current to flow through, described open C T gathers the induction current on described line wire by the mode of induction, for described local monitoring device provides working power, and the internal battery of local monitoring device is charged, realize from transmission line of electricity, " getting energy " in real time on the spot and the function of " energy storage ", to solve the insulation against ground problem of the local monitoring device hanging/be fixed on line wire.
Present invention also offers the stained automatic monitoring device of a kind of line insulator, it is characterized in that: described automatic monitoring device is made up of local monitoring device and ground base station, the local monitoring device described in it at least comprises Temperature Humidity Sensor, sound transducer, advance signal processing unit, CPU element, wireless signal sending module and emitting antenna; Described local monitoring device is fixed on the line wire of often group insulator lower end by a suspender; Described suspender is provided with an open C T, and described open C T runs through described line wire and arranges, for gathering the induction current on transmission line of electricity; In the junction of described line insulator and line wire, a leakage current CT is set; The signal output part of described leakage current CT, Temperature Humidity Sensor and sound transducer, through described advance signal processing unit, correspondingly with described CPU element to connect, the I/O port of described CPU element, correspondingly with the signal input part of described wireless signal sending module connect, the signal output part of described wireless signal sending module is connected with emitting antenna; Arrange one group of corresponding reception of wireless signals module at ground base station, the wireless signal sending module in described reception of wireless signals module and at least one local monitoring device described forms cordless communication network; Leakage current between described leakage current CT detection line insulator and circuit; Described Temperature Humidity Sensor gathers the humidity of environment residing for line insulator; Described sound transducer gathers intensity of sound during circuit insulator arc-over.
The output signal of leakage current CT, Temperature Humidity Sensor and sound transducer described in described local monitoring device Real-time Collection, after the pre-service of described advance signal processing unit, the CPU element in described local monitoring device obtains intensity of sound value, the leakage current values of insulator and the humidity value of atmospheric environment during insulator arc-over in real time.
Described local monitoring device by described wireless signal sending module and emitting antenna, by the intensity of sound value, leakage current values and the humidity value that gather, record be sent to described ground base station; The related sound intensity level of each group of received line insulator, leakage current values and humidity value are carried out vertical or horizontal comparison by described ground base station, judge stained state or the degree of each group of insulator, realize many group line insulators stained automatic/synchronization monitoring.
Concrete, described suspender is hanged hook; Described advance signal processing unit at least comprises A/D change-over circuit; Described wireless signal transmission/reception module is frequency microwave signal transmission/reception module circuit, 3G communication module circuit or GPRS data communication module circuit; Described leakage current CT is sleeved on being connected and fixed on gold utensil of line insulator and line wire junction.
Further, the induction current that described open C T collects, after overcommutation, voltage stabilizing, for the internal battery of described local monitoring device provides float charger, realize " getting energy " function real-time from circuit or " getting energy ", " energy storage " function, thus reach described local monitoring device " working power of asking for ", without the need to the powering mode of external power supply.
Local monitoring device described in technical solution of the present invention or ground base station by the record to the stained state of each group of insulator or degree numerical value, compare, obtain stained state or the degree numerical value of each group of insulator; After the stained state of described insulator or degree numerical value exceed corresponding predetermined value, described local monitoring device or ground base station are to dispatching control center output alarm signal; Or, described local monitoring device or ground base station by the record to the stained state of each group of insulator or degree historical values, compare, obtain the incremental variations speed of each group of stained state of insulator or degree numerical value, after the incremental variations speed of the stained state of described insulator or degree numerical value is greater than corresponding setting value, described local monitoring device or ground base station export early warning signal to dispatching control center.
The stained automatic monitoring device of line insulator described in technical solution of the present invention is by carrying out monitoring in real time, comprehensively to the stained state or degree of respectively organizing insulator in transmission line of electricity, adopt the mode of longitudinally contrast and/or across comparison, automatically stained state or the degree of insulator, is drawn exactly, according to the incremental variations speed of the stained state of insulator or degree numerical value, predict the stained state of insulator or degree in advance, to improve the safety and reliability that transmission line of electricity runs.
Compared with the prior art, advantage of the present invention is:
1, adopt the mode of intensity of sound value, the leakage current values of insulator and the humidity value of atmospheric environment when simultaneously detecting insulator arc-over, the leakage current of on-line measurement insulator and electric discharge sound intensity, can judge the stained state of insulator more accurately; Carry out monitoring in real time, comprehensively to the stained state or degree of respectively organizing insulator in transmission line of electricity; Reach the stained condition monitoring of line insulator;
2, wireless data communication technology, phase-locked sound intensity detection technique, small area analysis detection technique, working power of asking for technology, Humidity Detection technology, micro-computer processing technology has been merged, adopt the mode of longitudinally contrast and/or across comparison, automatically stained state or the degree of insulator, is drawn exactly, can according to the incremental variations speed of the stained state of insulator or degree numerical value, predict the stained state of insulator or degree in advance, to improve the safety and reliability that transmission line of electricity runs;
3, open C T is adopted to gather the induction current of transmission line wire, after overcommutation, voltage stabilizing, for the internal battery of local monitoring device provides float charger, to realize " getting energy " function real-time from circuit or " getting energy ", " energy storage " function, thus reach local monitoring device " working power of asking for ", without the need to the mode of operation of external power supply.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the electric principle block diagram of local monitoring device of the present invention.
In figure, 1 is line insulator, and 2 is leakage current CT, and 3 is open C T, and 4 is local monitoring device, and 5 is line wire.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figures 1 and 2, technical scheme of the present invention provides the stained automatic monitoring method of a kind of line insulator, comprise the stained monitoring state to group line insulator each on transmission line of electricity, upper end and the power transmission line column bar of described line insulator are connected and fixed, the lower end of described line insulator is fixed with the line wire of transmission line of electricity, and the automatic monitoring method described in it comprises the following steps:
A, a hanged hook is set on the line wire 5 often organizing insulator 1 lower end, for hanging, fixing a local monitoring device 4;
Temperature Humidity Sensor, sound transducer, advance signal processing unit, CPU element, wireless signal sending module and emitting antenna are set in B, at the scene supervising device;
C, transmission line of electricity by way of transformer station or Control Room a ground base station (not shown, lower with) is set, for receiving the wireless communication signals that described local monitoring device sends;
D, junction at described line insulator and line wire, arrange a leakage current CT2, and what described leakage current CT was sleeved on line insulator and line wire junction is connected and fixed on gold utensil;
The signal output part of E, described leakage current CT, Temperature Humidity Sensor and sound transducer, through described advance signal processing unit, correspondingly with described CPU element to connect, the I/O port of described CPU element, correspondingly with the signal input part of described wireless signal sending module connect, the signal output part of described wireless signal sending module is connected with emitting antenna;
F, on hanged hook, arrange an open C T3 (in figure, itself and hanged hook being expressed as integrative-structure jointly), described open C T runs through described line wire and arranges, for gathering the induction current on transmission line of electricity;
The induction current that G, described open C T collect, after overcommutation, voltage stabilizing, for described local monitoring device provides working power, realize from circuit, getting energy function in real time or getting energy, energy-storage function, thus reach described local monitoring device " working power of asking for ", without the need to the powering mode of external power supply;
H, leakage current between described leakage current CT detection line insulator and circuit; Described Temperature Humidity Sensor gathers the humidity of environment residing for line insulator; Described sound transducer gathers intensity of sound during circuit insulator arc-over;
The output signal of leakage current CT, Temperature Humidity Sensor and sound transducer described in I, described local monitoring device Real-time Collection, after the pre-service of described advance signal processing unit, the CPU element in described local monitoring device obtains intensity of sound value, the leakage current values of insulator and the humidity value of atmospheric environment during insulator arc-over in real time;
J, local monitoring device by described wireless signal sending module and emitting antenna, by the intensity of sound value, leakage current values and the humidity value that gather, record be sent to described ground base station;
K. the corresponding intensity of sound value of each group of received line insulator, leakage current values and humidity value are carried out vertical or horizontal comparison by ground base station, judge stained state or the degree of each group of insulator;
L, by the record to the stained state of each group of insulator or degree numerical value, to compare, obtain stained state or the degree numerical value of each group of insulator, after the stained state of described insulator or degree numerical value exceed corresponding predetermined value, ground base station is to dispatching control center output alarm signal;
M, by the record to the stained state of each group of insulator or degree historical values, to compare, obtain the incremental variations speed of each group of stained state of insulator or degree numerical value, after the incremental variations speed of the stained state of described insulator or degree numerical value is greater than corresponding setting value, ground base station exports early warning signal to dispatching control center;
N, described automatic monitoring method carry out monitoring in real time, comprehensively to the stained state of group insulator each in transmission line of electricity or degree, by the mode of longitudinally contrast and across comparison, automatically stained state or the degree of insulator, is drawn exactly, according to the incremental variations speed of the stained state of insulator or degree numerical value, predict the stained state of insulator or degree in advance, and then contribute to carrying out defeat elimination, greatly can improve the safety and reliability that transmission line of electricity runs.
Wherein, described longitudinal comparison comprises to be carried out sorting or contrasting by the corresponding intensity of sound value of same group of not received in the same time line insulator, leakage current values and humidity value in chronological order.
Described lateral comparison comprises to be undertaken sorting or contrasting by the phase sequence of transmission line of electricity by the corresponding intensity of sound value of each group of line insulator received by a certain moment, leakage current values and humidity value.
Concrete, described advance signal processing unit at least comprises A/D change-over circuit.
Described wireless signal transmission/reception module is frequency microwave signal transmission/reception module circuit, 3G communication module circuit or GPRS data communication module circuit.
Further, when the line wire of described transmission line of electricity has electric current to flow through, described open C T gathers the induction current on described line wire by the mode of induction, for described local monitoring device provides working power, and the internal battery of local monitoring device is charged, realize from transmission line of electricity, " getting energy " in real time on the spot and the function of " energy storage ", to solve the insulation against ground problem of the local monitoring device hanging/be fixed on line wire.
In Fig. 2, technical scheme of the present invention additionally provides the stained automatic monitoring device of a kind of line insulator, automatic monitoring device described in it is made up of local monitoring device and ground base station, and its local monitoring device at least comprises Temperature Humidity Sensor, sound transducer, advance signal processing unit, CPU element, wireless signal sending module and emitting antenna.
As shown in Figure 1, described local monitoring device 4 is fixed on the line wire of often group insulator lower end by a suspender; Described suspender is provided with an open C T3, and described open C T runs through described line wire and arranges, for gathering the induction current on transmission line of electricity.
In described line insulator 1 and the junction of line wire 5, a leakage current CT2 is set.
The signal output part of described leakage current CT, Temperature Humidity Sensor and sound transducer, through described advance signal processing unit, correspondingly with described CPU element to connect, the I/O port of described CPU element, correspondingly with the signal input part of described wireless signal sending module connect, the signal output part of described wireless signal sending module is connected with emitting antenna.
Arrange one group of corresponding reception of wireless signals module at ground base station, the wireless signal sending module in described reception of wireless signals module and at least one local monitoring device described forms cordless communication network.
Leakage current between above-mentioned leakage current CT detection line insulator and circuit; Temperature Humidity Sensor gathers the humidity of environment residing for line insulator; Sound transducer gathers intensity of sound during circuit insulator arc-over.
The output signal of leakage current CT, Temperature Humidity Sensor and sound transducer described in local monitoring device Real-time Collection, after the pre-service of advance signal processing unit, the CPU element in local monitoring device obtains intensity of sound value, the leakage current values of insulator and the humidity value of atmospheric environment during insulator arc-over in real time.
Local monitoring device by wireless signal sending module and emitting antenna, by the intensity of sound value, leakage current values and the humidity value that gather, record be sent to ground base station;
The related sound intensity level of each group of received line insulator, leakage current values and humidity value are carried out vertical or horizontal comparison by ground base station, judge stained state or the degree of each group of insulator, realize many group line insulators stained automatic/synchronization monitoring.
Wherein, above-mentioned suspender is hanged hook; Above-mentioned advance signal processing unit at least comprises A/D change-over circuit; Above-mentioned reception of wireless signals module is frequency microwave signal transmitting module circuit, 3G communication module circuit or GPRS data communication module circuit; Above-mentioned leakage current CT is sleeved on being connected and fixed on gold utensil of line insulator and line wire junction.
Concrete, the induction current that above-mentioned open C T collects, after overcommutation, voltage stabilizing, for the internal battery of local monitoring device provides float charger, realize " getting energy " function real-time from circuit or " getting energy ", " energy storage " function, thus reach local monitoring device " working power of asking for ", without the need to the powering mode of external power supply.
Further, above-mentioned local monitoring device or ground base station by the record to the stained state of each group of insulator or degree numerical value, compare, obtain stained state or the degree numerical value of each group of insulator;
After the stained state of monitored insulator or degree numerical value exceed corresponding predetermined value, above-mentioned local monitoring device or ground base station are to dispatching control center output alarm signal.
Above-mentioned local monitoring device or ground base station by the record to the stained state of each group of insulator or degree historical values, compare, obtain the incremental variations speed of each group of stained state of insulator or degree numerical value, after the incremental variations speed of the stained state of monitored insulator or degree numerical value is greater than corresponding setting value, local monitoring device or ground base station export early warning signal to dispatching control center.
The concrete structure of above-mentioned open C T and principle of work, same with the open C T-phase of conventional tong-type ammeter front end, it plays on the one hand the effect be fixed on by local monitoring device on line wire, on the other hand, its open C T passes through electromagnetic induction, electric current on induction transmission line of electricity, this induction current is carried out rectification, after voltage stabilizing, float charger can be provided for the internal battery (rechargeable battery) of local monitoring device, realize local monitoring device " getting energy " function real-time from transmission line of electricity or " getting energy ", " energy storage " function, also can solve the insulation against ground problem of the local monitoring device hanging/be fixed on line wire simultaneously, also existing powering mode (such as adopting supplying power for photovoltaic cell pattern) can be avoided by the larger defect of weather effect.
The performance that insulator is stained, is reflected in the increase of the Leakage Current of insulator and the sound of surface-discharge, the technical program by real time, the leakage current of on-line measurement insulator and electric discharge sound intensity, the stained state of insulator can be judged more accurately.
The stained automatic monitoring device of line insulator in technical solution of the present invention, by carrying out monitoring in real time, comprehensively to the stained state or degree of respectively organizing insulator in transmission line of electricity, adopt the mode of longitudinally contrast and/or across comparison, automatically stained state or the degree of insulator, is drawn exactly, according to the incremental variations speed of the stained state of insulator or degree numerical value, predict the stained state of insulator or degree in advance, to improve the safety and reliability that transmission line of electricity runs.
The present invention can be widely used in the automatic monitoring field of overhead transmission line.
Claims (10)
1. the stained automatic monitoring method of line insulator, comprise the stained monitoring state to group line insulator each on transmission line of electricity, upper end and the power transmission line column bar of described line insulator are connected and fixed, the lower end of described line insulator is fixed with the line wire of transmission line of electricity, it is characterized in that described automatic monitoring method comprises the following steps:
A, a hanged hook is set on the line wire often organizing insulator lower end, for hanging, fixing a local monitoring device;
Temperature Humidity Sensor, sound transducer, advance signal processing unit, CPU element, wireless signal sending module and emitting antenna are set in B, at the scene supervising device;
C, transmission line of electricity by way of transformer station or Control Room a ground base station is set, for receiving the wireless communication signals that described local monitoring device sends;
D, junction at described line insulator and line wire, arrange a leakage current CT, and what described leakage current CT was sleeved on line insulator and line wire junction is connected and fixed on gold utensil;
The signal output part of E, described leakage current CT, Temperature Humidity Sensor and sound transducer, through described advance signal processing unit, correspondingly with described CPU element to connect, the I/O port of described CPU element, correspondingly with the signal input part of described wireless signal sending module connect, the signal output part of described wireless signal sending module is connected with emitting antenna;
F, on hanged hook, arrange an open C T, described open C T runs through described line wire and arranges, for gathering the induction current on transmission line of electricity;
The induction current that G, described open C T collect, after overcommutation, voltage stabilizing, for described local monitoring device provides working power, realize from circuit, getting energy function in real time or getting energy, energy-storage function, thus reach described local monitoring device " working power of asking for ", without the need to the powering mode of external power supply;
H, leakage current between described leakage current CT detection line insulator and circuit; Described Temperature Humidity Sensor gathers the humidity of environment residing for line insulator; Described sound transducer gathers intensity of sound during circuit insulator arc-over;
The output signal of leakage current CT, Temperature Humidity Sensor and sound transducer described in I, described local monitoring device Real-time Collection, after the pre-service of described advance signal processing unit, the CPU element in described local monitoring device obtains intensity of sound value, the leakage current values of insulator and the humidity value of atmospheric environment during insulator arc-over in real time;
J, local monitoring device by described wireless signal sending module and emitting antenna, by the intensity of sound value, leakage current values and the humidity value that gather, record be sent to described ground base station;
K. the related sound intensity level of each group of received line insulator, leakage current values and humidity value are carried out vertical or horizontal comparison by ground base station, judge stained state or the degree of each group of insulator;
L, by the record to the stained state of each group of insulator or degree numerical value, to compare, obtain stained state or the degree numerical value of each group of insulator, after the stained state of described insulator or degree numerical value exceed corresponding predetermined value, ground base station is to dispatching control center output alarm signal;
M, by the record to the stained state of each group of insulator or degree historical values, to compare, obtain the incremental variations speed of each group of stained state of insulator or degree numerical value, after the incremental variations speed of the stained state of described insulator or degree numerical value is greater than corresponding setting value, ground base station exports early warning signal to dispatching control center;
N, described automatic monitoring method carry out monitoring in real time, comprehensively to the stained state of group insulator each in transmission line of electricity or degree, by the mode of longitudinally contrast and across comparison, automatically stained state or the degree of insulator, is drawn exactly, according to the incremental variations speed of the stained state of insulator or degree numerical value, predict the stained state of insulator or degree in advance, and then contribute to carrying out defeat elimination, greatly can improve the safety and reliability that transmission line of electricity runs.
2., according to the stained automatic monitoring method of line insulator according to claim 1, it is characterized in that described longitudinal comparison comprises and the related sound intensity level of same group of not received in the same time line insulator, leakage current values and humidity value are carried out sorting or contrasting in chronological order.
3., according to the stained automatic monitoring method of line insulator according to claim 1, it is characterized in that described lateral comparison comprises and the related sound intensity level of each group of line insulator received by a certain moment, leakage current values and humidity value are undertaken sorting or contrasting by the phase sequence of transmission line of electricity.
4., according to the stained automatic monitoring method of line insulator according to claim 1, it is characterized in that described advance signal processing unit at least comprises A/D change-over circuit.
5., according to the stained automatic monitoring method of line insulator according to claim 1, it is characterized in that described wireless signal sending module is frequency microwave signal transmitting module circuit, 3G communication module circuit or GPRS data communication module circuit.
6. according to the stained automatic monitoring method of line insulator according to claim 1, it is characterized in that when the line wire of described transmission line of electricity has electric current to flow through, described open C T gathers the induction current on described line wire by the mode of induction, for described local monitoring device provides working power, and the internal battery of local monitoring device is charged, realize from transmission line of electricity, " getting energy " in real time on the spot and the function of " energy storage ", to solve the insulation against ground problem of the local monitoring device hanging/be fixed on line wire.
7. the stained automatic monitoring device of line insulator, is characterized in that:
Described automatic monitoring device is made up of local monitoring device and ground base station,
Local monitoring device described in it at least comprises Temperature Humidity Sensor, sound transducer, advance signal processing unit, CPU element, wireless signal sending module and emitting antenna;
Described local monitoring device is fixed on the line wire of often group insulator lower end by a suspender;
Described suspender is provided with an open C T, and described open C T runs through described line wire and arranges, for gathering the induction current on transmission line of electricity;
In the junction of described line insulator and line wire, a leakage current CT is set;
The signal output part of described leakage current CT, Temperature Humidity Sensor and sound transducer, through described advance signal processing unit, correspondingly with described CPU element to connect, the I/O port of described CPU element, correspondingly with the signal input part of described wireless signal sending module connect, the signal output part of described wireless signal sending module is connected with emitting antenna;
Arrange one group of corresponding reception of wireless signals module at ground base station, the wireless signal sending module in described reception of wireless signals module and at least one local monitoring device described forms cordless communication network;
Leakage current between described leakage current CT detection line insulator and circuit; Described Temperature Humidity Sensor gathers the humidity of environment residing for line insulator; Described sound transducer gathers intensity of sound during circuit insulator arc-over;
The output signal of leakage current CT, Temperature Humidity Sensor and sound transducer described in described local monitoring device Real-time Collection, after the pre-service of described advance signal processing unit, the CPU element in described local monitoring device obtains intensity of sound value, the leakage current values of insulator and the humidity value of atmospheric environment during insulator arc-over in real time;
Described local monitoring device by described wireless signal sending module and emitting antenna, by the intensity of sound value, leakage current values and the humidity value that gather, record be sent to described ground base station;
The related sound intensity level of each group of received line insulator, leakage current values and humidity value are carried out vertical or horizontal comparison by described ground base station, judge stained state or the degree of each group of insulator, realize many group line insulators stained automatic/synchronization monitoring.
8., according to the stained automatic monitoring device of line insulator according to claim 7, it is characterized in that described suspender is hanged hook; Described advance signal processing unit at least comprises A/D change-over circuit; Described wireless signal transmission/reception module is frequency microwave signal transmission/reception module circuit, 3G communication module circuit or GPRS data communication module circuit; Described leakage current CT is sleeved on being connected and fixed on gold utensil of line insulator and line wire junction.
9. according to the stained automatic monitoring device of line insulator according to claim 7, it is characterized in that the induction current that described open C T collects, after overcommutation, voltage stabilizing, for the internal battery of described local monitoring device provides float charger, realize " getting energy " function real-time from circuit or " getting energy ", " energy storage " function, thus reach described local monitoring device " working power of asking for ", without the need to the powering mode of external power supply.
10. according to the stained automatic monitoring device of line insulator according to claim 7, it is characterized in that described local monitoring device or ground base station by the record to the stained state of each group of insulator or degree numerical value, compare, obtain stained state or the degree numerical value of each group of insulator;
After the stained state of described insulator or degree numerical value exceed corresponding predetermined value, described local monitoring device or ground base station are to dispatching control center output alarm signal;
Described local monitoring device or ground base station by the record to the stained state of each group of insulator or degree historical values, compare, obtain the incremental variations speed of each group of stained state of insulator or degree numerical value, after the incremental variations speed of the stained state of described insulator or degree numerical value is greater than corresponding setting value, described local monitoring device or ground base station export early warning signal to dispatching control center;
The stained automatic monitoring device of described line insulator is by carrying out monitoring in real time, comprehensively to the stained state or degree of respectively organizing insulator in transmission line of electricity, adopt the mode of longitudinally contrast and/or across comparison, automatically stained state or the degree of insulator, is drawn exactly, according to the incremental variations speed of the stained state of insulator or degree numerical value, predict the stained state of insulator or degree in advance, to improve the safety and reliability that transmission line of electricity runs.
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