CN105572581A - Online detection system and online detection method for isolating switch - Google Patents
Online detection system and online detection method for isolating switch Download PDFInfo
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- CN105572581A CN105572581A CN201610108715.8A CN201610108715A CN105572581A CN 105572581 A CN105572581 A CN 105572581A CN 201610108715 A CN201610108715 A CN 201610108715A CN 105572581 A CN105572581 A CN 105572581A
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- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 238000006073 displacement reaction Methods 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 230000003287 optical Effects 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 229910004682 ON-OFF Inorganic materials 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound 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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
- G01R31/3274—Details related to measuring, e.g. sensing, displaying or computing; Measuring of variables related to the contact pieces, e.g. wear, position or resistance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Abstract
The invention relates to an online detection system and an online detection method for an isolating switch. The system comprises a motor operating mechanism, the isolating switch and an online detection device, wherein the motor operating mechanism comprises a motor; the online detection device comprises a detection module, a conversion module, a switch and a centralized control terminal; the detection module is used for acquiring detection analog signals of the motor operating mechanism and the isolating switch; the detection analog signals comprise a temperature analog signal, a displacement analog signal and a switching value analog signal of the isolating switch and a current analog signal of the motor; the conversion module is used for finally converting the detection analog signals into detection optical signals and transmitting the detection optical signals to the centralized control terminal; and the centralized control terminal carries out centralized control on the received detection optical signals. The system and the method of the invention meet the intelligent power grid construction requirements by the state grid, and the safety, the reliability and the anti-interference performance are good.
Description
Technical field
The present invention relates to intelligent power network field, particularly relate to a kind of system and method for disconnector on-line checkingi.
Background technology
Disconnector, is commonly called as " disconnecting link ", generally refers to high voltage isolator, and namely rated voltage is at 1kV and above disconnector thereof, usually referred to as disconnector, is use maximum a kind of electrical equipment in high-voltage switch electric appliance.
Different according to transformer substation voltage grade, isolator operating mechanism adopt mode of operation difference be roughly divided into following several situation: before 2003 500Kv and above disconnector operator and ground cutter all adopt electronic and manual electric operating, in terminal box operation on the spot, the operator of 220Kv disconnector adopts electronic and manual electric operating, ground cutter adopts manual operation, operator and the ground cutter of the disconnector of 110Kv and following electric pressure all adopt manual operation, the operating mechanism of above disconnector all can not realize centralized control, the requirement of the construction intelligent power network that national grid proposes cannot be met.
Disconnector does not belong to key equipment in transforming plant primary equipment, the control of disconnector and detecting is not paid attention to fully, for adapting to the requirement of the construction intelligent power network that national grid proposes, office of each province has carried out some transformations to disconnector, motor-operating mechanism is changed into comprising by the manual-operating mechanism of disconnector, but a not unified technical requirement, improved disconnector can not meet the requirement of Intelligent transformer station completely, and there is potential safety hazard, concrete manifestation is as follows:
1, disconnector requires unmanned, its on off state and ruuning situation all rely on switching value to judge, switching value be connected on central station of floating dock measurement and control unit by control cables, then backstage is imported into, if control cables insulation outlet problem, disconnector may be caused to operate, the appearance of cutter by mistake separating brake or false switching phenomenon, because disconnector does not possess the function of cut-offfing load, can do great damage to power grid security like this.
2, electric operating disconnector conductive portions contact situation still needs patrol officer regularly to carry out temperature survey to scene, does not realize the degree of on-line monitoring.
3, after the straighforward operation of electric operating disconnector, scene also needs to arrange fortune inspection personnel on site to examine switch on/off switch and to put in place situation.
4, existing disconnector does not all possess the function detected disconnector on/off switch electric current.
Summary of the invention
Technical matters to be solved by this invention is to provide the system and method for the disconnector on-line checkingi that a kind of security is high, antijamming capability is strong and unfailing performance is good.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of disconnector on-line detecting system, comprises electromotor operating mechanism, disconnector and on-line measuring device; Described electromotor operating mechanism comprises motor;
Described on-line measuring device comprises detection module, modular converter, switch and collection control end;
Described detection module is for gathering the detection simulating signal of described electromotor operating mechanism and described disconnector, and described detection simulating signal comprises the current analog signal of the temperature analog signal of described disconnector, shift simulation signal, switching value simulating signal and described motor;
Described modular converter is used for described detection simulating signal to be finally converted into sensed light signal; And send to described collection to control end by described switch; Described sensed light signal comprises the electric current light signal of the temperature light signal of described disconnector, displacement light signal, switching value light signal and described motor;
Described collection control end is used for carrying out centralized control to the described sensed light signal received.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described detection module comprises temperature detecting unit, displacement detecting unit, switching value unit and current detecting unit;
Described temperature detecting unit is for gathering the temperature analog signal of described disconnector;
Described displacement detecting unit is for gathering the shift simulation signal of described disconnector;
Described switching value unit is for gathering the switching value simulating signal of described disconnector;
Described current detecting unit is for gathering the current analog signal of described motor.
Further, described temperature detecting unit comprises wireless temperature-measuring sensor, and described wireless temperature-measuring sensor is for measuring the conduction temperature of described disconnector.
Further, described displacement detecting unit comprises displacement transducer, and institute's displacement sensors is for measuring the displacement of described disconnector deciliter.
Further, described switching value unit comprises on-off model collector, and described on-off model collector is for measuring the switching value of described disconnector.
Further, described current detecting unit comprises current transformer, and described current transformer is for measuring the electric current of described motor.
Further, described modular converter comprises AD conversion unit and number optical conversion element;
Described AD conversion unit is used for described detection simulating signal to be converted into detection digital signal;
Described several optical conversion element is used for described detection digital signal to be converted into sensed light signal.
Further, described collection control end carries out central controlled process to the described sensed light signal received and specifically comprises:
Described collection control end judges whether described temperature light signal exceedes preset temperature threshold value; If so, then judge that described disconnector breaks down; If not, then judge that the conduction temperature of described disconnector is normal;
The described collection control more described displacement light signal of end and preset displacement reference value, to judge deciliter situation of described disconnector; Described preset displacement reference value is use displacement transducer to close or by the multiple continuous print distance values collected in the process to be incorporated into point by assigning to the qualified disconnector of debugging;
The described collection control more described electric current light signal of end and predetermined current reference value, to judge the dirigibility of described electric-motor drive; Described predetermined current reference value is make Current Transformer exchange the current value collected in the qualified motor running of examination; If the described electric current light signal that described collection control termination receives is zero, then judge that described motor breaks down.
Further, described switch accesses described collection control end by optical cable.
The another kind of technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind ofly use described disconnector on-line detecting system to carry out the method detected, and comprises the following steps:
Step S1, gather the detection simulating signal of described electromotor operating mechanism and described disconnector, described detection simulating signal comprises the current analog signal of the temperature analog signal of described disconnector, shift simulation signal, switching value simulating signal and described motor;
Step S2, is finally converted into sensed light signal by described detection simulating signal; Described sensed light signal comprises the electric current light signal of the temperature light signal of described disconnector, displacement light signal, switching value light signal and described motor;
Step S3, carries out centralized control to described sensed light signal.
The invention has the beneficial effects as follows:
1, the signal collected is converted into light signal by the present invention, can avoid maloperation situation;
2, the present invention adopts optical cable transmission, the major accident because control cables Insulation Problems causes can be avoided, meanwhile, can quantities be reduced, shorten the construction period, and the optical-fibre communications using optical cable to carry out have the outstanding advantages such as capacity is large, loss is low, anti-interference;
3, collection control end of the present invention and monitoring equipment can realize the remote on-line monitoring to disconnector and electromotor operating mechanism, can real-time monitor the operation conditions of disconnector and electromotor operating mechanism, possess good safety and reliability.
Accompanying drawing explanation
Fig. 1 is the structural drawing of disconnector on-line detecting system described in the embodiment of the present invention one;
Fig. 2 is the process flow diagram of disconnector online test method described in the embodiment of the present invention two.
Embodiment
Be described principle of the present invention and feature below in conjunction with accompanying drawing, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Fig. 1 is the structural drawing of disconnector on-line detecting system described in the embodiment of the present invention one.
As shown in Figure 1, a kind of disconnector on-line detecting system, comprises electromotor operating mechanism, disconnector and on-line measuring device; Electromotor operating mechanism comprises motor; On-line measuring device comprises detection module, modular converter, switch and collection control end.
Detection module, for gathering the detection simulating signal of electromotor operating mechanism and disconnector, detects the current analog signal that simulating signal comprises the temperature analog signal of disconnector, shift simulation signal, switching value simulating signal and motor; Wherein, detection module comprises temperature detecting unit, displacement detecting unit, switching value unit and current detecting unit.
Temperature detecting unit is for gathering the temperature analog signal of disconnector, temperature detecting unit comprises wireless temperature-measuring sensor, wireless temperature-measuring sensor is for measuring the conduction temperature of disconnector, wireless temperature-measuring sensor is arranged on the fingertip surface of contact of the moving contact of disconnector, different mounting meanss can be adopted according to the disconnector of different model, such as adopt bolt crimping or strap-on mounting means, temperature measurement on-line sensor can carry out on-line checkingi to the running temperature of electric conductor, because wireless temperature-measuring sensor shell is aluminum metal housing, therefore good heat conductivility is possessed, simultaneously, aluminium shell is enclosure, its antenna casing adopts fire resistant resin to seal, possesses rainproof and resistant to elevated temperatures function.
Displacement detecting unit is for gathering the shift simulation signal of disconnector; Displacement detecting unit comprises displacement transducer, and displacement transducer is for measuring the displacement of disconnector deciliter.
Switching value unit is for gathering the switching value simulating signal of disconnector; Switching value unit comprises on-off model collector, and on-off model collector is for measuring the switching value of disconnector.
Current detecting unit is for gathering the current analog signal of motor; Current detecting unit comprises current transformer, and current transformer is for measuring the electric current of motor; Wherein current transformer is preferably punching electronic current mutual inductor, can penetrate in electric electromechanics resource loop.
Said temperature simulating signal, shift simulation signal, switching value simulating signal and current analog signal can be sent to modular converter by wireless or wired mode.If wireless mode, then system of the present invention also comprises a wireless receiving module, enables described modular converter wireless receiving to temperature analog signal, shift simulation signal, switching value simulating signal or current analog signal.
Modular converter is used for detection simulating signal to be finally converted into sensed light signal; And send to collection control end by switch; Sensed light signal comprises the electric current light signal of the temperature light signal of disconnector, displacement light signal, switching value light signal and motor; Digital signal, mainly for simulating signal is changed into digital signal, is then converted into light signal by modular converter, and therefore, modular converter comprises AD conversion unit and number optical conversion element; AD conversion unit is used for detection simulating signal to be converted into detection digital signal; Number optical conversion element is used for detection digital signal to be converted into sensed light signal.Sensed light signal transmission after conversion can avoid misoperation, ensures the safety and reliability of operation.Wherein switch is Ethernet switch, by optical cable access set control end.Use optical cable to carry out optical fiber communication, there is the outstanding advantages such as capacity is large, loss is low, anti-interference, and compared to control cables, in concrete use, the major accident because control cables Insulation Problems causes can be avoided, and can quantities be reduced when mounted, shorten the construction period.
Collection control end is used for carrying out centralized control to the sensed light signal received.
Collection control end carries out central controlled process to the sensed light signal received and specifically comprises: collection control end judges whether temperature light signal exceedes preset temperature threshold value; If so, then detection and isolation switch breaks down; If not, then the conduction temperature of detection and isolation switch is normal.
Collection control end compares displacement light signal and preset displacement reference value, with deciliter situation of detection and isolation switch; Wherein, preset displacement reference value is use displacement transducer to close or by the multiple continuous print distance values collected in the process to be incorporated into point by assigning to the qualified disconnector of debugging.In concrete example, continuous print displacement light signal and multiple continuous print displacement datum value can be compared, thus judge that disconnector is by assign to respectively or by be incorporated into point.
Collection control end compares electric current light signal and predetermined current reference value, to judge the dirigibility of electric-motor drive; Predetermined current reference value is make Current Transformer exchange the current value collected in the qualified motor running of examination; In instantiation, if electric current light signal is more close to current reference value, illustrate that the dirigibility of electric-motor drive is better, reliability is higher, otherwise, then the dirigibility of electric-motor drive and reliability poor, if the electric current light signal that collection control termination receives is zero, then judge that motor breaks down.
System of the present invention also comprises control module, for storing preset temperature threshold value, preset displacement reference value and predetermined current reference value.
System of the present invention also comprises monitoring equipment, and described sensed light signal can also be sent to monitoring equipment by photoelectric commutator.
Fig. 2 is the process flow diagram of disconnector online test method described in the embodiment of the present invention two.
As shown in Figure 2, a kind ofly use described disconnector on-line detecting system to carry out the method detected, comprise the following steps:
Step S1, gather the detection simulating signal of described electromotor operating mechanism and described disconnector, described detection simulating signal comprises the current analog signal of the temperature analog signal of described disconnector, shift simulation signal, switching value simulating signal and described motor;
Step S2, is finally converted into sensed light signal by described detection simulating signal; Described sensed light signal comprises the electric current light signal of the temperature light signal of described disconnector, displacement light signal, switching value light signal and described motor;
Step S3, carries out centralized control to described sensed light signal.
In the description of this instructions, concrete grammar, device or feature that the description of reference term " embodiment one ", " embodiment two ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, method, device or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this instructions or example and different embodiment or example can carry out combining and combining by those skilled in the art.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a disconnector on-line detecting system, is characterized in that, comprises electromotor operating mechanism, disconnector and on-line measuring device; Described electromotor operating mechanism comprises motor;
Described on-line measuring device comprises detection module, modular converter, switch and collection control end;
Described detection module is for gathering the detection simulating signal of described electromotor operating mechanism and described disconnector, and described detection simulating signal comprises the current analog signal of the temperature analog signal of described disconnector, shift simulation signal, switching value simulating signal and described motor;
Described modular converter is used for described detection simulating signal to be finally converted into sensed light signal; And send to described collection to control end by described switch; Described sensed light signal comprises the electric current light signal of the temperature light signal of described disconnector, displacement light signal, switching value light signal and described motor;
Described collection control end is used for carrying out centralized control to the described sensed light signal received.
2. disconnector on-line detecting system according to claim 1, is characterized in that, described detection module comprises temperature detecting unit, displacement detecting unit, switching value unit and current detecting unit;
Described temperature detecting unit is for gathering the temperature analog signal of described disconnector;
Described displacement detecting unit is for gathering the shift simulation signal of described disconnector;
Described switching value unit is for gathering the switching value simulating signal of described disconnector;
Described current detecting unit is for gathering the current analog signal of described motor.
3. disconnector on-line detecting system according to claim 2, is characterized in that, described temperature detecting unit comprises wireless temperature-measuring sensor, and described wireless temperature-measuring sensor is for measuring the conduction temperature of described disconnector.
4. disconnector on-line detecting system according to claim 2, is characterized in that, described displacement detecting unit comprises displacement transducer, and institute's displacement sensors is for measuring the displacement of described disconnector deciliter.
5. disconnector on-line detecting system according to claim 2, is characterized in that, described switching value unit comprises on-off model collector, and described on-off model collector is for measuring the switching value of described disconnector.
6. disconnector on-line detecting system according to claim 2, is characterized in that, described current detecting unit comprises current transformer, and described current transformer is for measuring the electric current of described motor.
7. disconnector on-line detecting system according to claim 2, is characterized in that, described modular converter comprises AD conversion unit and number optical conversion element;
Described AD conversion unit is used for described detection simulating signal to be converted into detection digital signal;
Described several optical conversion element is used for described detection digital signal to be converted into sensed light signal.
8. disconnector on-line detecting system according to claim 1, is characterized in that, described collection control end carries out central controlled process to the described sensed light signal received and specifically comprises:
Described collection control end judges whether described temperature light signal exceedes preset temperature threshold value; If so, then judge that described disconnector breaks down; If not, then judge that the conduction temperature of described disconnector is normal;
The described collection control more described displacement light signal of end and preset displacement reference value, to judge deciliter situation of described disconnector; Described preset displacement reference value is use displacement transducer to close or by the multiple continuous print distance values collected in the process to be incorporated into point by assigning to the qualified disconnector of debugging;
The described collection control more described electric current light signal of end and predetermined current reference value, to judge the dirigibility of described electric-motor drive; Described predetermined current reference value is make Current Transformer exchange the current value collected in the qualified motor running of examination; If the described electric current light signal that described collection control termination receives is zero, then judge that described motor breaks down.
9. disconnector on-line detecting system according to claim 8, is characterized in that, described switch accesses described collection control end by optical cable.
10. use disconnector on-line detecting system according to any one of claim 1-9 to carry out the method detected, it is characterized in that, comprise the following steps:
Step S1, gather the detection simulating signal of described electromotor operating mechanism and described disconnector, described detection simulating signal comprises the current analog signal of the temperature analog signal of described disconnector, shift simulation signal, switching value simulating signal and described motor;
Step S2, is finally converted into sensed light signal by described detection simulating signal; Described sensed light signal comprises the electric current light signal of the temperature light signal of described disconnector, displacement light signal, switching value light signal and described motor;
Step S3, carries out centralized control to described sensed light signal.
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| CN201610108715.8A CN105572581A (en) | 2016-02-26 | 2016-02-26 | Online detection system and online detection method for isolating switch |
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