CN102445654A - On-line monitor for mechanical characteristic of on-load tap-changer of power transformer - Google Patents
On-line monitor for mechanical characteristic of on-load tap-changer of power transformer Download PDFInfo
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- CN102445654A CN102445654A CN2011102863844A CN201110286384A CN102445654A CN 102445654 A CN102445654 A CN 102445654A CN 2011102863844 A CN2011102863844 A CN 2011102863844A CN 201110286384 A CN201110286384 A CN 201110286384A CN 102445654 A CN102445654 A CN 102445654A
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- 238000003745 diagnosis Methods 0.000 abstract description 9
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- 238000012544 monitoring process Methods 0.000 abstract description 4
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Abstract
The invention relates to an on-line monitor for a mechanical characteristic of an on-load tap-changer of a power transformer, which is formed by an industrial personal computer, a data receiving station, a sensor, a signal conditioning circuit, a display, a keyboard and the like. The industrial personal computer is used for synthetically judging a collected mechanical vibration signal, a transmission shaft rotational speed signal and a drive motor current signal to obtain a fault diagnosis result, and transmitting the data to the data receiving station through a optical network; and the data receiving station is used for storing and analyzing the vibration data, the current data, the rotational speed data and the fault diagnosis result in real time, and timely finding mechanical failures such as jam of a mechanical drive part, jam of a changing-over contact, misalignment and looseness, desynchrony of three phases, and the like occurred on the on-load tap-changer in an operation process, so that the on-line monitoring and diagnosing of state quantity in a changing-over process of the on-load tap-changer are realized.
Description
Technical field
The present invention relates to a kind of power transformer load tap changer mechanical property on-Line Monitor Device.
Background technology
Load ratio bridging switch is the assembly of power transformer most critical, in electric system, bears voltage adjustment function.Whether its sequence of movement and handoff procedure be good and bad, whether work is reliable, is directly connected to the transformer safe operation.Along with ULTC puts into operation and load ratio bridging switch frequent movement adjustment in a large number, the mechanical fault of load ratio bridging switch generation in service comes out gradually, has a strong impact in case break down the safe and stable operation to transformer and electrical network caused.According to the foreign data statistics, the shunting switch fault is occupied 41% of voltage adjustment of on-load transformer fault, and domestic average statistics data show that the fault of shunting switch accounts for more than 20% of transformer fault.Mechanical faults such as load ratio bridging switch is in operation, and mechanical drive department position bite, switching contact bite possibly take place, it is loosening to misplace, three-phase is asynchronous also do not have on-line testing and the device of diagnosing these faults at present.
Summary of the invention
The objective of the invention is to overcome the problems referred to above, a kind of power transformer load tap changer mechanical property on-Line Monitor Device is provided.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is:
Power transformer load tap changer mechanical property on-Line Monitor Device; Form by industrial computer, DRS, sensor, signal conditioning circuit, display, keyboard etc.; It is characterized in that: industrial computer (1) links to each other with the vibration signal modulate circuit of vibration signals collecting unit (2) through the A/D analog to digital converter, and the vibration signal modulate circuit is connected with vibration transducer.
By above-mentioned said on-Line Monitor Device, industrial computer (1) also can link to each other with the current signal modulate circuit of motor current signal unit (3) through the A/D analog to digital converter, and the current signal modulate circuit is connected with current sensor.
By above-mentioned said on-Line Monitor Device, industrial computer (1) also can link to each other with the tach signal modulate circuit of rotating shaft rotating speed collecting unit (4) through the A/D analog to digital converter, and the tach signal modulate circuit is connected with speed probe.
By above-mentioned said on-Line Monitor Device; Industrial computer (1) can link to each other with DRS (5) through network interface card; Industrial computer (1) can link to each other with the load ratio bridging switch auxiliary contact with relay through the I/O IO interface, is used for the control signal collection, and industrial computer (1) is connected with display and keyboard; Display can be a LCD display, and keyboard can be a matrix keyboard.
Above-mentioned said on-Line Monitor Device; The course of work is: industrial computer is comprehensively judged mechanical oscillation signal, transmission shaft tach signal, the drive motor current signal gathered and is drawn fault diagnosis result and data are sent to DRS through fiber optic network; DRS is to vibration data; Current data and rotary speed data and fault diagnosis result are stored, real-time analysis, curve display etc.; In time find the load ratio bridging switch mechanical faults such as the mechanical drive position bite, the switching contact bite that take place, dislocation is loosening, three-phase is asynchronous that are in operation, realize the on-line monitoring and the diagnosis of quantity of state in the load ratio bridging switch handoff procedure.
The present invention compared with prior art has the following advantages:
(1) can accurately judge the power transformer load tap changer mechanical property; In time find the load ratio bridging switch mechanical faults such as the mechanical drive position bite, the switching contact bite that take place, dislocation is loosening, three-phase is asynchronous that are in operation, realize the on-line monitoring and the diagnosis of quantity of state in the load ratio bridging switch handoff procedure.
(2) data processing is efficient, and intelligent degree is high, can realize network management.
(3) manufacture craft is simple, production cost is low, be convenient to promote the use of.
Through accompanying drawing and embodiment, the present invention is done further detailed description below.
Description of drawings
Accompanying drawing 1 is a structured flowchart of the present invention.
Accompanying drawing 2 is an one-piece construction synoptic diagram of the present invention.
Accompanying drawing 3 is a contour structures synoptic diagram of the present invention.
The icon explanation:
1～industrial computer; 2～vibration signals collecting unit; 3～motor current signal unit; 4～rotating shaft rotating speed collecting unit; 5～DRS.
Embodiment
Accompanying drawing 1 is a structured flowchart of the present invention, and accompanying drawing 2 is an one-piece construction synoptic diagram of the present invention, and accompanying drawing 3 is a contour structures synoptic diagram of the present invention.This on-Line Monitor Device is made up of industrial computer, DRS, sensor, signal conditioning circuit, display, keyboard etc.; Industrial computer (1) links to each other with the vibration signal modulate circuit of vibration signals collecting unit (2) through the A/D analog to digital converter; The vibration signal modulate circuit is connected with vibration transducer, gathers vibration signal.Industrial computer (1) also can link to each other with the current signal modulate circuit of motor current signal unit (3) through the A/D analog to digital converter, and the current signal modulate circuit is connected with current sensor, gathers motor current signal.Industrial computer (1) also can link to each other with the tach signal modulate circuit of rotating shaft rotating speed collecting unit (4) through the A/D analog to digital converter, and the tach signal modulate circuit is connected with speed probe, gathers the rotating shaft tach signal.Industrial computer (1) links to each other with DRS (5) through network interface card; Industrial computer (1) links to each other with the load ratio bridging switch auxiliary contact with relay through the I/O IO interface; Be used for the control signal collection; Industrial computer (1) is connected with display and keyboard, and display can be a LCD display, and keyboard can be a matrix keyboard.Industrial computer (1) also links to each other with power module, obtains working power.
The course of work of power transformer load tap changer mechanical property on-Line Monitor Device of the present invention is: the vibration signal of load ratio bridging switch is gathered in vibration signals collecting unit (2); The current data of motor is gathered in motor current signal unit (3), and rotating shaft rotating speed collecting unit (4) is gathered the rotating shaft rotating speed; Industrial computer (1) is comprehensively judged vibration signal, motor current signal, the rotating shaft tach signal gathered and is drawn fault diagnosis result and data are sent to fiber optic network; Connect the vibration data that fiber optic network DRS (5) sends industrial computer; Current data and rotary speed data and fault diagnosis result are stored; Real-time analysis; Curve display etc. are in time found the load ratio bridging switch mechanical faults such as the mechanical drive position bite, the switching contact bite that take place, dislocation is loosening, three-phase is asynchronous that are in operation, and realize the on-line monitoring and the diagnosis of quantity of state in the load ratio bridging switch handoff procedure.
Claims (5)
1. power transformer load tap changer mechanical property on-Line Monitor Device; Form by industrial computer, DRS, sensor, signal conditioning circuit, display, keyboard etc.; It is characterized in that: industrial computer (1) links to each other with the vibration signal modulate circuit of vibration signals collecting unit (2) through the A/D analog to digital converter, and the vibration signal modulate circuit is connected with vibration transducer.
2. according to the described power transformer load tap changer mechanical property of claim 1 on-Line Monitor Device; It is characterized in that: industrial computer (1) links to each other with the current signal modulate circuit of motor current signal unit (3) through the A/D analog to digital converter, and the current signal modulate circuit is connected with current sensor.
3. according to claim 1 or the described power transformer load tap changer mechanical property of claim 2 on-Line Monitor Device; It is characterized in that: industrial computer (1) links to each other with the tach signal modulate circuit of rotating shaft rotating speed collecting unit (4) through the A/D analog to digital converter, and the tach signal modulate circuit is connected with speed probe.
4. according to claim 1 or the described power transformer load tap changer mechanical property of claim 2 on-Line Monitor Device; It is characterized in that: industrial computer (1) links to each other with DRS (5) through network interface card; Industrial computer (1) links to each other with the load ratio bridging switch auxiliary contact with relay through the I/O IO interface, and industrial computer (1) is connected with display and keyboard.
5. according to the described power transformer load tap changer mechanical property of claim 3 on-Line Monitor Device; It is characterized in that: industrial computer (1) links to each other with DRS (5) through network interface card; Industrial computer (1) links to each other with the load ratio bridging switch auxiliary contact with relay through the I/O IO interface, and industrial computer (1) is connected with display and keyboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102863844A CN102445654A (en) | 2011-09-16 | 2011-09-16 | On-line monitor for mechanical characteristic of on-load tap-changer of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102863844A CN102445654A (en) | 2011-09-16 | 2011-09-16 | On-line monitor for mechanical characteristic of on-load tap-changer of power transformer |
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| CN102445654A true CN102445654A (en) | 2012-05-09 |
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| CN2011102863844A Pending CN102445654A (en) | 2011-09-16 | 2011-09-16 | On-line monitor for mechanical characteristic of on-load tap-changer of power transformer |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217566A (en) * | 2013-04-07 | 2013-07-24 | 武汉格蓝若光电互感器有限公司 | Current online monitoring integrated system of on-load tap changer |
| CN104833413A (en) * | 2015-03-11 | 2015-08-12 | 国网浙江海盐县供电公司 | On-line vibration monitoring device used for transformer |
| CN104897267A (en) * | 2015-05-07 | 2015-09-09 | 国家电网公司 | On-line monitoring device for vibration signals of on-load tap changer |
| CN104964734A (en) * | 2015-05-07 | 2015-10-07 | 国家电网公司 | On-load voltage regulation switch vibration signal on-line monitoring method |
| CN105510813A (en) * | 2015-10-12 | 2016-04-20 | 国家电网公司 | System for online monitoring of state of converter transformer tap switch based on vibration principle |
| CN110595762A (en) * | 2019-10-29 | 2019-12-20 | 广州供电局有限公司 | Transformer on-load tap changer diagnosis system and transformer on-load tap changer diagnosis method |
| CN112857286A (en) * | 2021-01-05 | 2021-05-28 | 国网安徽省电力有限公司电力科学研究院 | Non-electric quantity protection method and system of on-load tap-changer based on vibration displacement information |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202230182U (en) * | 2011-09-16 | 2012-05-23 | 山西省电力公司运城供电分公司 | Power transformer on-load tap-changer mechanical characteristic on-line monitoring device |
-
2011
- 2011-09-16 CN CN2011102863844A patent/CN102445654A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202230182U (en) * | 2011-09-16 | 2012-05-23 | 山西省电力公司运城供电分公司 | Power transformer on-load tap-changer mechanical characteristic on-line monitoring device |
Non-Patent Citations (1)
| Title |
|---|
| 张国强等: "有载分接开关机械性能的在线监测与故障诊断***设计", 《电气开关》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103217566A (en) * | 2013-04-07 | 2013-07-24 | 武汉格蓝若光电互感器有限公司 | Current online monitoring integrated system of on-load tap changer |
| CN104833413A (en) * | 2015-03-11 | 2015-08-12 | 国网浙江海盐县供电公司 | On-line vibration monitoring device used for transformer |
| CN104897267A (en) * | 2015-05-07 | 2015-09-09 | 国家电网公司 | On-line monitoring device for vibration signals of on-load tap changer |
| CN104964734A (en) * | 2015-05-07 | 2015-10-07 | 国家电网公司 | On-load voltage regulation switch vibration signal on-line monitoring method |
| CN105510813A (en) * | 2015-10-12 | 2016-04-20 | 国家电网公司 | System for online monitoring of state of converter transformer tap switch based on vibration principle |
| CN110595762A (en) * | 2019-10-29 | 2019-12-20 | 广州供电局有限公司 | Transformer on-load tap changer diagnosis system and transformer on-load tap changer diagnosis method |
| CN112857286A (en) * | 2021-01-05 | 2021-05-28 | 国网安徽省电力有限公司电力科学研究院 | Non-electric quantity protection method and system of on-load tap-changer based on vibration displacement information |
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Owner name: STATE ELECTRIC NET CROP. Effective date: 20130107 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20130107 Address after: 044000 No. 3889 Hedong East Street, Shanxi, Yuncheng Applicant after: Yuncheng Power Supply Company of Shanxi Electric Power Corportaion Applicant after: State Grid Corporation of China Address before: 044000 No. 3889 Hedong East Street, Shanxi, Yuncheng Applicant before: Yuncheng Power Supply Company of Shanxi Electric Power Corportaion |
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Application publication date: 20120509 |