CN111638447A - Switch cabinet tulip contact diagnosis system and method thereof - Google Patents
Switch cabinet tulip contact diagnosis system and method thereof Download PDFInfo
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- CN111638447A CN111638447A CN202010365825.9A CN202010365825A CN111638447A CN 111638447 A CN111638447 A CN 111638447A CN 202010365825 A CN202010365825 A CN 202010365825A CN 111638447 A CN111638447 A CN 111638447A
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- 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
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- 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
Abstract
The invention relates to a cubical switchboard plum blossom contact diagnostic system and method, the system includes contact pressing force test module, return circuit resistance test module, data storage module, data analysis and diagnostic module, the contact pressing force test module, return circuit resistance test module link with data storage module, the data storage module also links with data analysis and diagnostic module. The invention has reasonable design, realizes the function of overhauling the contact in the overhauling stage, and avoids the contact from being burnt out due to overheating caused by insufficient pressing force after operation and influencing the power supply stability; in addition, the method can automatically learn and analyze the data of the past, provide trend prejudgment and diagnosis suggestions according to the result, realize the diagnosis of the tulip contact and further provide maintenance suggestions.
Description
Technical Field
The invention belongs to the technical field of high-voltage switch cabinets, and relates to a three-phase contact in a closed high-voltage switch cabinet, in particular to a switch cabinet tulip contact diagnosis system and a method thereof.
Background
High voltage switchgear is widely used in power systems, and is used for switching, controlling or protecting power generation, power transmission, power distribution, power conversion and consumption of the power systems. The reliability of the switch cabinet is directly affected by the performance of the contacts at the wire connection in the switch cabinet.
In the working process of a closed high-voltage switch cabinet, local fusion welding or spark and arc discharge can occur due to overhigh temperature rise of a three-phase contact in the switch cabinet to cause a power system fault, so that the temperature of the three-phase contact needs to be monitored in real time in the working process of the high-voltage switch cabinet.
Through searching and discovering no relevant documents of the diagnosis technology of the plum blossom contact of the switch cabinet, the prior art can not prevent the overheating condition of the contact of the switch cabinet.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a switch cabinet tulip contact diagnosis system and a method thereof, which can be used for quickly and accurately positioning a fault air chamber and troubleshooting and improve the maintenance efficiency.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a cubical switchboard plum blossom contact diagnostic system, includes contact packing force test module, return circuit resistance test module, data storage module, data analysis and diagnostic module, contact packing force test module, return circuit resistance test module are connected with data storage module, and this data storage module still is connected with data analysis and diagnostic module.
A method for rapidly analyzing faults of a combined electrical appliance comprises the following steps:
step 1, measuring a pressing force applied to a sensor by a tulip contact through a contact pressing force testing module, and sending measured data to a data storage module;
step 2, measuring the shortest loop resistance containing the tulip contact and the fixed contact through a loop resistance testing module, and sending the measured data to a contact data storage module;
step 3, the data storage module stores contact pressing force testing module data and loop resistance testing module data, and transmits the measured data to the data analysis and diagnosis module;
and 4, diagnosing the data of the contact pressing force testing module and the data of the loop resistance testing module by the data analyzing and diagnosing module to obtain a diagnosis result.
Furthermore, the method for measuring the pressing force in step 1 includes the steps of:
selecting a sensor matched with the inner diameter size of a plum blossom contact;
the sensor is matched with the plum blossom contact to simulate the contact state of the plum blossom contact and the fixed contact;
and transmitting the pressure value to the data storage module through a cable.
Moreover, the step 2 of measuring the pressing force exerted by the tulip contact on the sensor comprises the following steps: the contact pressing force of the phase A, the contact pressing force of the phase B and the contact pressing force of the phase C.
Furthermore, the method for measuring the shortest loop resistance in the step 2 comprises the following steps:
the method includes the steps that if a switch cabinet busbar has power failure, a circuit breaker handcart is pushed to an operation position, and the shortest loop resistance of a plum blossom contact and a static contact is measured by a voltage-current method;
and if the busbar of the switch cabinet is not powered off, the data is lost.
Furthermore, the measurement data stored in the step 3 data storage module includes directly input handover test data and past routine test data.
Moreover, the step 4 data analysis and diagnosis module performs analysis processing including initial processing and deep learning processing; the initial processing is used for analyzing and processing the data storage module and carrying out diagnosis prompt and image display on the state of the contact; and the deep learning processing is used for processing the parameters of the plum blossom contact in the same model and providing a judgment trend.
Moreover, the specific implementation method of the step 4 includes the following steps:
setting a contact compression force value and an effective range of a loop resistance value in a data analysis and diagnosis module;
secondly, the data analysis and diagnosis module compares the received compaction force value with the effective range of the loop resistance value, if the compaction force value is within the effective data range, the data is judged to be reasonably usable, and if the compaction force value is not within the effective data range, the data is judged to be unreasonable, and an alarm prompt is performed;
comparing and analyzing the same-side switch cabinet, and comparing the A, B, C three-phase contact pressing force and the loop resistance value of the same-side switch cabinet;
fourth, comparison and analysis are carried out on the same batch of cabinets, and comparison is carried out between the same type and the same parameter and the same switch cabinet of the manufacturer;
fifthly, calling out the switch cabinet data with the same serial number for comparison;
sixthly, displaying a comparison curve of the three-phase contact pressure in a picture mode;
and automatically learning and analyzing the data of the data storage module, and obtaining a diagnosis threshold value by combining with the loop resistance value and the contact pressing force analysis, and giving a diagnosis result suggestion.
The invention has the advantages and positive effects that:
according to the method, the pressing force when the tulip contact is contacted with the fixed contact is measured in a simulating mode, the shortest loop resistance of the tulip contact and the fixed contact is measured, pressing force data of the three-phase contact, the tulip contact with the same specification and the same model and loop resistance data of the tulip contact and the fixed contact are compared, an analysis curve graph is given, historical data are automatically learned and analyzed, trend prejudgment and diagnosis suggestions are given according to results, the diagnosis function of the tulip contact is realized, the contact is maintained in a maintenance stage, and the situation that the contact is burnt out due to overheating caused by insufficient pressing force after operation and power supply stability is influenced is avoided. In addition, the method can automatically learn and analyze the data of the past, provide trend prejudgment and diagnosis suggestions according to the result, realize the diagnosis of the tulip contact and further provide maintenance suggestions.
Drawings
Fig. 1 is a connection diagram of a cubical switchboard tulip contact diagnostic system of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A cubical switchboard plum blossom contact diagnostic system, as shown in figure 1, includes contact pressing force test module, return circuit resistance test module, data storage module, data analysis and diagnostic module, contact pressing force test module, return circuit resistance test module are connected with data storage module, and this data storage module still is connected with data analysis and diagnostic module.
Based on the switch cabinet tulip contact diagnosis system, the invention also provides a switch cabinet tulip contact diagnosis method, which comprises the following steps:
step 1, measuring the pressing force applied by the tulip contact on the sensor through a contact pressing force testing module, and sending data to a data storage module.
In the step, the concrete steps of measuring the pressing force of the plum blossom contact applied on the sensor are as follows:
selecting a sensor matched with the inner diameter size of a plum blossom contact;
the sensor is matched with the plum blossom contact to simulate the contact state of the plum blossom contact and the fixed contact;
and transmitting the pressure value to the data storage module through a cable.
In this step, the contact pressing force test module measures the pressing force applied by the tulip contact on the sensor, and the contact pressing force test module comprises the following steps: the contact pressing force of the phase A, the contact pressing force of the phase B and the contact pressing force of the phase C.
And 2, measuring the shortest loop resistance containing the tulip contact and the fixed contact through a loop resistance testing module, and sending data to a contact data storage module.
In this step, the shortest loop resistance of the tulip contact and the static contact is measured as follows:
the method includes the steps that if a switch cabinet busbar has power failure, a circuit breaker handcart is pushed to an operation position, and the shortest loop resistance of a plum blossom contact and a static contact is measured by a voltage-current method;
and if the busbar of the switch cabinet is not powered off, the data is lost.
And 3, storing the contact pressing force testing module data and the loop resistance testing module data by the data storage module, and transmitting the data to the data analysis and diagnosis module.
In this step, the measurement data stored in the data storage module includes directly inputted handover test data and past routine test data.
Step 4, the data analysis and diagnosis module performs initial processing and deep learning processing on the data of the contact pressing force test module and the data of the loop resistance test module; the initial processing is used for analyzing and processing the data storage module, and performing diagnosis prompt and image display on the state of the contact; and the deep learning processing is used for processing the parameters of the plum blossom contact in the same model and providing a judgment trend.
In this step, the data analysis and diagnosis module performs comparison analysis of the same-plane cabinets and comparison analysis of the same-batch cabinets, and displays the comparison analysis and comparison analysis in the form of a chart.
In this step, the specific steps of processing and comparing the data are as follows:
setting a contact compression force value and an effective range of a loop resistance value in a data analysis and diagnosis module;
secondly, the data analysis and diagnosis module compares the received compaction force value with the effective range of the loop resistance value, if the compaction force value is within the effective data range, the data is judged to be reasonably usable, and if the compaction force value is not within the effective data range, the data is judged to be unreasonable, and an alarm prompt is performed;
comparing and analyzing the same-side switch cabinet, and comparing the A, B, C three-phase contact pressing force and the loop resistance value of the same-side switch cabinet;
fourth, comparison and analysis are carried out on the same batch of cabinets, and comparison is carried out between the same type and the same parameter and the same switch cabinet of the manufacturer;
fifthly, calling out the switch cabinet data with the same serial number for comparison;
sixthly, displaying a comparison curve of the three-phase contact pressure in a picture mode;
and automatically learning and analyzing the data of the data storage module, and obtaining a diagnosis threshold value by combining with the loop resistance value and the contact pressing force analysis, and giving a diagnosis result suggestion.
It should be emphasized that the embodiments described herein are illustrative rather than restrictive, and thus the present invention is not limited to the embodiments described in the detailed description, but also includes other embodiments that can be derived from the technical solutions of the present invention by those skilled in the art.
Claims (8)
1. A cubical switchboard plum blossom contact diagnostic system which characterized in that: the testing device comprises a contact pressing force testing module, a loop resistance testing module, a data storage module and a data analysis and diagnosis module, wherein the contact pressing force testing module and the loop resistance testing module are connected with the data storage module, and the data storage module is also connected with the data analysis and diagnosis module.
2. A method for diagnosing the tulip contact diagnostic system of the switch cabinet as claimed in claim 1, characterized by comprising the steps of:
step 1, measuring a pressing force applied to a sensor by a tulip contact through a contact pressing force testing module, and sending measured data to a data storage module;
step 2, measuring the shortest loop resistance containing the tulip contact and the fixed contact through a loop resistance testing module, and sending the measured data to a contact data storage module;
step 3, the data storage module stores contact pressing force testing module data and loop resistance testing module data, and transmits the measured data to the data analysis and diagnosis module;
and 4, diagnosing the data of the contact pressing force testing module and the data of the loop resistance testing module by the data analyzing and diagnosing module to obtain a diagnosis result.
3. The diagnosis method of the switch cabinet tulip contact diagnosis system as claimed in claim 2, wherein: the method for measuring the compaction force in the step 1 comprises the following steps:
selecting a sensor matched with the inner diameter size of a plum blossom contact;
the sensor is matched with the plum blossom contact to simulate the contact state of the plum blossom contact and the fixed contact;
and transmitting the pressure value to the data storage module through a cable.
4. The diagnostic method of the switch cabinet tulip contact diagnostic system as claimed in claim 2 or 3, wherein: the step 2 of measuring the pressing force of the tulip contact on the sensor comprises the following steps: the contact pressing force of the phase A, the contact pressing force of the phase B and the contact pressing force of the phase C.
5. The diagnosis method of the switch cabinet tulip contact diagnosis system as claimed in claim 2, wherein: the method for measuring the shortest loop resistance in the step 2 comprises the following steps:
the method includes the steps that if a switch cabinet busbar has power failure, a circuit breaker handcart is pushed to an operation position, and the shortest loop resistance of a plum blossom contact and a static contact is measured by a voltage-current method;
and if the busbar of the switch cabinet is not powered off, the data is lost.
6. The diagnosis method of the switch cabinet tulip contact diagnosis system as claimed in claim 2, wherein: the measurement data stored by the step 3 data storage module comprises directly input handover test data and routine test data.
7. The diagnosis method of the switch cabinet tulip contact diagnosis system as claimed in claim 2, wherein: the step 4, the data analysis and diagnosis module carries out analysis processing including initial processing and deep learning processing; the initial processing is used for analyzing and processing the data storage module and carrying out diagnosis prompt and image display on the state of the contact; and the deep learning processing is used for processing the parameters of the plum blossom contact in the same model and providing a judgment trend.
8. The diagnostic method of the switch cabinet tulip contact diagnostic system as claimed in claim 2 or 7, wherein: the specific implementation method of the step 4 comprises the following steps:
setting a contact compression force value and an effective range of a loop resistance value in a data analysis and diagnosis module;
secondly, the data analysis and diagnosis module compares the received compaction force value with the effective range of the loop resistance value, if the compaction force value is within the effective data range, the data is judged to be reasonably usable, and if the compaction force value is not within the effective data range, the data is judged to be unreasonable, and an alarm prompt is performed;
comparing and analyzing the same-side switch cabinet, and comparing the A, B, C three-phase contact pressing force and the loop resistance value of the same-side switch cabinet;
fourth, comparison and analysis are carried out on the same batch of cabinets, and comparison is carried out between the same type and the same parameter and the same switch cabinet of the manufacturer;
fifthly, calling out the switch cabinet data with the same serial number for comparison;
sixthly, displaying a comparison curve of the three-phase contact pressure in a picture mode;
and automatically learning and analyzing the data of the data storage module, and obtaining a diagnosis threshold value by combining with the loop resistance value and the contact pressing force analysis, and giving a diagnosis result suggestion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010365825.9A CN111638447A (en) | 2020-04-30 | 2020-04-30 | Switch cabinet tulip contact diagnosis system and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010365825.9A CN111638447A (en) | 2020-04-30 | 2020-04-30 | Switch cabinet tulip contact diagnosis system and method thereof |
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| CN111638447A true CN111638447A (en) | 2020-09-08 |
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| CN202010365825.9A Pending CN111638447A (en) | 2020-04-30 | 2020-04-30 | Switch cabinet tulip contact diagnosis system and method thereof |
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| CN106124973A (en) * | 2016-05-16 | 2016-11-16 | 国家电网公司 | Converter power transformer load ratio bridging switch on-line condition monitoring method |
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| CN109724792A (en) * | 2019-02-28 | 2019-05-07 | 四川赛康智能科技股份有限公司 | A kind of high-voltage switch cabinet breaker mechanical property detection method |
| CN110749388A (en) * | 2019-10-31 | 2020-02-04 | 国网河北省电力有限公司电力科学研究院 | High tension switchgear plum blossom contact pressure on-line monitoring device |
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2020
- 2020-04-30 CN CN202010365825.9A patent/CN111638447A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124973A (en) * | 2016-05-16 | 2016-11-16 | 国家电网公司 | Converter power transformer load ratio bridging switch on-line condition monitoring method |
| CN206291986U (en) * | 2016-11-03 | 2017-06-30 | 国网江苏省电力公司海门市供电公司 | Snap-in force detecting tool |
| CN108282026A (en) * | 2017-12-27 | 2018-07-13 | 河南平高电气股份有限公司 | A kind of high-tension switch gear novel maintenance system |
| CN207866902U (en) * | 2018-03-14 | 2018-09-14 | 广东电网有限责任公司东莞供电局 | A kind of 10kVKYN switch cabinet handcarts loop resistance measurement auxiliary tool |
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