CN202141589U - Intelligent on-line monitoring device for on-load tap-changer of transformer - Google Patents
Intelligent on-line monitoring device for on-load tap-changer of transformer Download PDFInfo
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- CN202141589U CN202141589U CN201120228933U CN201120228933U CN202141589U CN 202141589 U CN202141589 U CN 202141589U CN 201120228933 U CN201120228933 U CN 201120228933U CN 201120228933 U CN201120228933 U CN 201120228933U CN 202141589 U CN202141589 U CN 202141589U
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Abstract
The utility model provides an intelligent on-line monitoring device for an on-load tap-changer of a transformer, relates to a monitoring device and especially to the on-line monitoring device used for the on-line monitoring of the switching condition of the on-load tap-changer of the transformer. The intelligent on-line monitoring device for the on-load tap-changer of the transformer is composed of a feed through current sensor, a non-contact angle sensor, a vibration sensor, a signal conditioning and collecting device and a computer terminal. The feed through current sensor connects with a current loop of a drive motor of the on-load tap-changer. The non-contact angle sensor is installed coaxially with a rotary shaft and a transmission shaft of the drive motor. The signal conditioning and collecting device connects with the feed through current sensor, the non-contact angle sensor, the vibration sensor and collecting device and the computer terminal. The intelligent on-line monitoring device for the on-load tap-changer of the transformer in the utility model has a simple structure. The intelligent on-line monitoring device for the on-load tap-changer of the transformer in the utility model has important realistic meaning to the safe running of power supply system. And the intelligent on-line monitoring device for the on-load tap-changer of the transformer in the utility model also has a good application prospect.
Description
Technical field
The utility model relates to a kind of monitoring device, especially a kind of on-Line Monitor Device that is used for on-line monitoring on-load tap changers of transformers switching condition.
Background technology
The above power transformer great majority of 110kV have all been installed on-load tap changer; Be a kind of device that a kind of tap link position with the transposing coil changes Operation of Electric Systems voltage, it is that transformer is accomplished load tapchanging critical component, also is unique parts that need action in the power transformer; Its action accurately and timely; Not only can reduce and avoid fluctuating widely of voltage, and can force the distribution load trend, the idle and active power of excavating equipment; Guarantee that power system security moves reliably, increase the dirigibility of dispatching of power netwoks.
But along with ULTC increases what electrical network was used, the fault of load ratio bridging switch is also increasing.According to statistics, in nineteen ninety whole nation 110kV～500kV Accident of Transformer or the fault, the fault of load ratio bridging switch accounts for 18% and 12% respectively, and in 57 faults of 500kV transformer, load ratio bridging switch accounts for 25%; According to the foreign data statistics, the load ratio bridging switch fault is occupied 41% of voltage adjustment of on-load transformer fault.The failure rate of load ratio bridging switch is high and in rising trend now, and domestic average statistics data show that its fault accounts for more than 20% of transformer fault.Power transformer is as one of major equipment in the supply network, and its duty is related to the security of operation of whole supply network.And as the duty of the vitals on-load voltage regulating switch in the transformer, with the operation conditions that directly influences transformer.
People are not enough to load ratio bridging switch fault understanding, and this mainly is because shunting switch action in the past is not frequent, so its research is not deep enough, up to the present, and the domestic load ratio bridging switch monitoring and diagnosis system that does not also really have construction value.Along with ULTC is used in electrical network and increased, and electrical network widely applies automatic voltage control system, and the load ratio bridging switch regulating frequency is than improve in the past greatly, and the fault of load ratio bridging switch is also increasing.If the failure mechanism to on-load tap changers of transformers does not carry out deep research, there is not reliable monitoring and diagnosis system, will produce the consequence that can not estimate to the electric system in future.So, press for the load ratio bridging switch fault studied, the test of load ratio bridging switch switching condition; Classic method is that the switch switching part in the transformer is hung out, and after light oscillograph is connected, uses the handle rotation drive machine; When treating that gunlock discharges soon, manually start light oscillograph record ripple, treat switch accomplish switch after; Shut-down operation, observed and recorded result, and the quality of judgement switch work; Or adopt the parameters such as transit time, transition resistance, three-phase synchronism of on-load tap changer tester measuring switch, show the transition waveform.But these methods can only be used for outage maintenance or delivery test, for the user, along with the continuous propelling of national grid intelligent development, with more rationally, economy and reliable detection method come the normally whether imperative of judgment device.
Summary of the invention
The utility model is to be solved to be exactly that present load ratio bridging switch detection method is unreasonable, and the problem of be only applicable to cut off the power supply maintenance or delivery test provides a kind of on-load tap changers of transformers intelligent online monitoring device.
The on-load tap changers of transformers intelligent online monitoring device of the utility model; It is characterized in that this monitoring device is made up of centre path current sensor, non-contact angle sensor, vibration transducer, signal condition and harvester and terminal; The centre path current sensor is connected with the current return of the drive motor of load ratio bridging switch; Non-contact angle sensor and drive motor rotation axis and transmission shaft concentric are installed, and signal condition links to each other with centre path current sensor, non-contact angle sensor, vibration transducer and terminal with harvester.
Signal condition and harvester amplify the sensor signal that collects through conditioning, send into terminal.
The magnetic core of processing with permalloy of described centre path current sensor is built in the enclosure with resin, and its outer casing inner wall is an ABS plastic, and outer wall encapsulates with stainless steel.
Described vibration transducer underrun flange is fixed on the magnetic support, and it is outside and near the position of load ratio bridging switch to rely on magnetic support to be adsorbed on transformer.
In the load ratio bridging switch handoff procedure if the energy-stored spring performance changes or thermal energy storage process in have phenomenon such as mechanism's jam; Must be accompanied by the variation of drive motor drives moment; Thereby the rotating speed of drive motor is changed, and the electric current of drive motor also can change thereupon.Therefore in the transducing signal of load ratio bridging switch monitoring system, except that the conventional vibration signal, also comprise the anglec of rotation and the current signal of drive motor.Through monitoring three road signals simultaneously, but the variation of real-time follow-up drive motor verticity, with the mechanical movement state of effective judgement load ratio bridging switch.
Three road signals such as the mechanical oscillation signal of load ratio bridging switch, the drive motor anglec of rotation, drive motor power current signal are as monitoring and the original signal of analyzing; Carry out collecting terminal after filtering, the amplification conditioning through signal condition and harvester, accomplish data storage, data printing, data analysis and work such as fault diagnosis and the inquiry of historical data by terminal.
The on-load tap changers of transformers intelligent online monitoring device of the utility model; Simple in structure, design science, easy to use; The duty of while on-line monitoring load ratio bridging switch; Its operating mechanical property is detected,, safe operation of power system is had important practical significance and good prospects for application to foresee its likelihood of failure and to differentiate its fault type.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, load ratio bridging switch 1, centre path current sensor 2, non-contact angle sensor 3, vibration transducer 4, signal condition and harvester 5, terminal 6, drive motor 7.
Embodiment
Embodiment 1: a kind of on-load tap changers of transformers intelligent online monitoring device; Constitute by centre path current sensor 2, non-contact angle sensor 3, vibration transducer 4, signal condition and harvester 5 and terminal 6; Centre path current sensor 2 is connected with the current return of the drive motor 7 of load ratio bridging switch 1; The magnetic core of processing with permalloy of centre path current sensor 2 is built in the enclosure with resin, and its outer casing inner wall is an ABS plastic, and outer wall encapsulates with stainless steel; Can effectively solve transformer station's external magnetic field and disturb, with high precision, minimizing phase error; Non-contact angle sensor 3 is installed with the transmission shaft concentric of drive motor 7; Transmission shaft in order to monitoring driving motor 7; Utilize magnetic signal induction, cooperate microprocessor to carry out intelligent signal Processing, advantage such as have contactless, noiseless, high sensitivity, high duplication, resolution is high, temperature stability is good; And the environment applicability is strong, can be used for rugged surroundings such as water, oil, vapour, dust, high low temperature, vibratory impulse; Vibration transducer 4 is connected with contact, the three-phase contact of load ratio bridging switch 1, and its underrun flange is fixed on the magnetic support, and it is outside and near the position of load ratio bridging switch 1, to obtain bigger vibration signal intensity to rely on magnetic support to be adsorbed on transformer; The letter signal condition links to each other with centre path current sensor 2, non-contact angle sensor 3, vibration transducer 4 and terminal 6 with harvester 5.
In load ratio bridging switch 1 handoff procedure if the energy-stored spring performance changes or thermal energy storage process in have phenomenon such as mechanism's jam; Must be accompanied by the variation of drive motor 7 driving moments; Thereby the rotating speed of drive motor 7 is changed, and the electric current of drive motor 7 also can change thereupon.Therefore in the transducing signal of load ratio bridging switch 1 monitoring system, except that the conventional vibration signal, also comprise the anglec of rotation and the current signal of drive motor 7.Through monitoring three road signals simultaneously, but the variation of real-time follow-up drive motor 7 verticities, with the mechanical movement state of effective judgement load ratio bridging switch 1.
Three road signals such as the mechanical oscillation signal of load ratio bridging switch 1, drive motor 7 anglecs of rotation, drive motor 7 power current signals are as monitoring and the original signal of analyzing; Carry out being sent to data collector after filtering, the amplification conditioning through signal condition and harvester 5; Be transmitted through the network to terminal 6 again, accomplish data storage, data printing, data analysis and work such as fault diagnosis and the inquiry of historical data by terminal 6.
Claims (3)
1. on-load tap changers of transformers intelligent online monitoring device; It is characterized in that this monitoring device is made up of centre path current sensor (2), non-contact angle sensor (3), vibration transducer (4), signal regulating device, signal pickup assembly and terminal (6); Centre path current sensor (2) is connected with the current return of the drive motor (7) of load ratio bridging switch (1); Non-contact angle sensor (3) is installed with drive motor (7) rotation axis and transmission shaft concentric, and signal condition links to each other with centre path current sensor (2), non-contact angle sensor (3), vibration transducer (4) and terminal (6) with harvester (5) 5.
2. a kind of on-load tap changers of transformers intelligent online monitoring device as claimed in claim 1; The magnetic core of processing with permalloy that it is characterized in that described centre path current sensor (2) is built in the enclosure with resin; Its outer casing inner wall is an ABS plastic, and outer wall encapsulates with stainless steel.
3. a kind of on-load tap changers of transformers intelligent online monitoring device as claimed in claim 1; It is characterized in that described vibration transducer (4) underrun flange is fixed on the magnetic support, it is outside and near the position of load ratio bridging switch (1) to rely on magnetic support to be adsorbed on transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120228933U CN202141589U (en) | 2011-07-01 | 2011-07-01 | Intelligent on-line monitoring device for on-load tap-changer of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120228933U CN202141589U (en) | 2011-07-01 | 2011-07-01 | Intelligent on-line monitoring device for on-load tap-changer of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141589U true CN202141589U (en) | 2012-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120228933U Expired - Fee Related CN202141589U (en) | 2011-07-01 | 2011-07-01 | Intelligent on-line monitoring device for on-load tap-changer of transformer |
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| CN (1) | CN202141589U (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510812A (en) * | 2015-10-12 | 2016-04-20 | 国家电网公司 | Converter transformer tap switch condition monitoring system and non-stationary signal spectrum estimation 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 |
| CN105759200A (en) * | 2016-02-18 | 2016-07-13 | 中国农业大学 | Method for online monitoring of work state of on-load tap-changer and early warning |
| CN106814312A (en) * | 2016-12-20 | 2017-06-09 | 国家电网公司 | On-load tap changers of transformers self-operated measuring unit |
| CN107390120A (en) * | 2017-07-26 | 2017-11-24 | 国网河南省电力公司南阳供电公司 | Disconnecting switch mechanical load Intelligent live test device and method of testing |
| CN107478985A (en) * | 2017-08-21 | 2017-12-15 | 河海大学常州校区 | On-load tap changers of transformers state on_line monitoring device and its monitoring method |
| CN107843778A (en) * | 2017-09-13 | 2018-03-27 | 国网山东省电力公司滨州供电公司 | Long-range loaded switch Vidacare corp and its application method |
| CN109449018A (en) * | 2018-12-23 | 2019-03-08 | 辽宁金立电力电器有限公司 | A kind of load ratio bridging switch |
| CN110132566A (en) * | 2019-05-28 | 2019-08-16 | 河海大学 | A kind of OLTC method for diagnosing faults based on fuzzy clustering |
| CN110673533A (en) * | 2019-10-31 | 2020-01-10 | 中国农业大学 | On-load tap-changer controller with on-line detection function |
| CN110703086A (en) * | 2019-11-12 | 2020-01-17 | 国网河南省电力公司南阳供电公司 | Transformer working condition information acquisition system and computer readable medium storing fault detection program |
| CN112485665A (en) * | 2020-12-01 | 2021-03-12 | 韩昕芮 | Dry-type transformer on-load tap-changer tester and detection method thereof |
| CN113390591A (en) * | 2021-05-31 | 2021-09-14 | 广西电网有限责任公司电力科学研究院 | On-load tap-changer mechanical vibration detection system and method based on 5G network |
-
2011
- 2011-07-01 CN CN201120228933U patent/CN202141589U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105510812A (en) * | 2015-10-12 | 2016-04-20 | 国家电网公司 | Converter transformer tap switch condition monitoring system and non-stationary signal spectrum estimation method |
| CN105759200B (en) * | 2016-02-18 | 2019-03-15 | 中国农业大学 | A kind of load ratio bridging switch working condition on-line monitoring and method for early warning |
| CN105759200A (en) * | 2016-02-18 | 2016-07-13 | 中国农业大学 | Method for online monitoring of work state of on-load tap-changer and early warning |
| CN106814312A (en) * | 2016-12-20 | 2017-06-09 | 国家电网公司 | On-load tap changers of transformers self-operated measuring unit |
| CN107390120A (en) * | 2017-07-26 | 2017-11-24 | 国网河南省电力公司南阳供电公司 | Disconnecting switch mechanical load Intelligent live test device and method of testing |
| CN107478985A (en) * | 2017-08-21 | 2017-12-15 | 河海大学常州校区 | On-load tap changers of transformers state on_line monitoring device and its monitoring method |
| CN107843778A (en) * | 2017-09-13 | 2018-03-27 | 国网山东省电力公司滨州供电公司 | Long-range loaded switch Vidacare corp and its application method |
| CN109449018A (en) * | 2018-12-23 | 2019-03-08 | 辽宁金立电力电器有限公司 | A kind of load ratio bridging switch |
| CN109449018B (en) * | 2018-12-23 | 2023-11-07 | 辽宁金立电力电器有限公司 | On-load tap-changer |
| CN110132566A (en) * | 2019-05-28 | 2019-08-16 | 河海大学 | A kind of OLTC method for diagnosing faults based on fuzzy clustering |
| CN110673533A (en) * | 2019-10-31 | 2020-01-10 | 中国农业大学 | On-load tap-changer controller with on-line detection function |
| CN110703086A (en) * | 2019-11-12 | 2020-01-17 | 国网河南省电力公司南阳供电公司 | Transformer working condition information acquisition system and computer readable medium storing fault detection program |
| CN110703086B (en) * | 2019-11-12 | 2021-08-17 | 国网河南省电力公司南阳供电公司 | Computer readable medium storing failure detection program |
| CN112485665A (en) * | 2020-12-01 | 2021-03-12 | 韩昕芮 | Dry-type transformer on-load tap-changer tester and detection method thereof |
| CN113390591A (en) * | 2021-05-31 | 2021-09-14 | 广西电网有限责任公司电力科学研究院 | On-load tap-changer mechanical vibration detection system and method based on 5G network |
| CN113390591B (en) * | 2021-05-31 | 2022-09-13 | 广西电网有限责任公司电力科学研究院 | On-load tap-changer mechanical vibration detection system and method based on 5G network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YUNNAN YITONG MEIER TECHNOLOGY CO., LTD. Free format text: FORMER NAME: KUNMING YITONG MEIER LIGHTING PROTECTION ENGINEERING CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 650011 Yunnan Province, Kunming Panlong District Baita Road No. 131 C Huidu International Building A room 1008 Patentee after: Yunnan Yitong Meier Technology Co., Ltd. Address before: 650011 Yunnan Province, Kunming Panlong District Baita Road No. 131 C Huidu International Building A room 1008 Patentee before: Kunming Yitong Meier Lighting Protection Engineering Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20150701 |
|
| EXPY | Termination of patent right or utility model |