CN101629854A - Implementation method and system for remote monitoring of oil temperature of power transformer - Google Patents
Implementation method and system for remote monitoring of oil temperature of power transformer Download PDFInfo
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- CN101629854A CN101629854A CN200910305401A CN200910305401A CN101629854A CN 101629854 A CN101629854 A CN 101629854A CN 200910305401 A CN200910305401 A CN 200910305401A CN 200910305401 A CN200910305401 A CN 200910305401A CN 101629854 A CN101629854 A CN 101629854A
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Abstract
The invention relates to the field of monitoring of electric power supply and discloses an implementation method for remote monitoring of the oil temperature of a power transformer. The method comprises the following steps: a temperature pulse converter converts the oil temperature signal of power transformer into a pulse and accesses the pulse into a distribution transform monitoring terminal, and the distribution transform monitoring terminal generates a pulse table and performs the pulse power conversion; and a server obtains the power value of the pulse table, coverts the power value into the temperature value and displays the temperature value. The invention further discloses an implementation system for remote monitoring of the oil temperature of the power transformer. The invention successfully solves the problem that some remote monitoring of the oil temperature of the power transformer is not suitable to install a temperature transmitter by increasing a temperature pulse coverter with low cost and by subtly utilizing the automatic remote meter-reading access of a power load management system on the server. The method is simple and feasible, has low cost, and can meet the use precision requirement without changing the existing distribution transformation.
Description
[technical field]
The present invention relates to power supply monitoring field, relate in particular to a kind of implementation method and system of remote monitoring of oil temperature of power transformer.
[background technology]
In service at power transformer, warm measurement is to safeguard the basis of power transformer safe operation and crucial to its oil.The daily need of management of power use department is monitored in real time to the oily temperature of power transformer, causes that to prevent transformer operating overload or other faults temperature sharply rises, and causes transformer to burn, the major accident of line outage.Oily temperature transmitter is generally adopted in the oily temperature remote monitoring of power transformer at present, convert temperature signal to 4～20mA current signal or 0～5V voltage signal, it is defeated to be input to remote transmission device such as optical fiber, be transferred to the background computer main station system at last, these methods all without exception the power transformer that requires possess oily temperature transmitter, concerning not implementing with the old-fashioned power transformer of temperature transmitter.And current a lot of old-fashioned transformer in usefulness need add charge of oil temperature transmitter in addition, could realize the remote monitoring of oil temperature; Though the warm transmitter measuring accuracy height of oil, its volume is big, the price height, and limited by old-fashioned transformer device structure, the occasion of the old-fashioned transformer of many uses is inconvenient to add charge of oil temperature transmitter.
[summary of the invention]
In order to solve above-mentioned deficiency of the prior art, the invention provides a kind of implementation method of remote monitoring of oil temperature of power transformer, solved the problem of the remote monitoring of oil temperature of power transformer of old-fashioned no temperature transmitter.
The present invention is achieved by the following technical solutions: design a kind of implementation method of remote monitoring of oil temperature of power transformer, comprise the steps,
(S1) the temperature pulse converter is converted to the oil temperature signal of power transformer pulse and this pulse is inserted the distribution transformer monitoring terminal;
(S2) the distribution transformer monitoring terminal production burst table horizontal pulse power transfer of going forward side by side;
(S3) server obtains the performance number of this pulse meter, is converted to Temperature numerical and also this Temperature numerical is shown.
The present invention is further improved to be: be separately installed with wireless transport module on described distribution transformer monitoring terminal and the described server; Described distribution transformer monitoring terminal and described server carry out data interaction by wireless network.
The present invention is further improved to be: described pulse is and the similar pulse of electronic electricity meter output pulses; Described oil temperature signal is changed in proportion.
The present invention is further improved to be: described temperature pulse converter comprises that temperature sensor, I/U electric current change the voltage transformation module, V/F voltage changes the impulse transfer module; Described I/U electric current changes the voltage transformation module and is connected with described temperature sensor and V/F voltage commentaries on classics impulse transfer module respectively; Described temperature sensor is pressed close to the temperature-measuring part of described power transformer; Described I/U conversion module converts current signal to voltage signal; Described V/F conversion module converts voltage signal to the pulse signal of certain frequency; Described I/U conversion module and V/F conversion module adopt linear transformation.
The present invention is further improved to be: in the described step (S2), and this distribution transformer monitoring terminal configuration pulse meter property parameters; The pulse meter input end of this distribution transformer monitoring terminal receives the pulse signal that transmits from this temperature pulse converter, and carries out the pulse power conversion by setting the pulse constant.
The present invention is further improved to be: in the described step (S3), this server carries out the copy reading performance number according to the stipulations of checking meter to this pulse meter, and carries out the reverse transformation number of degrees value of rising again according to former ratio conversion coefficient, and can pass through interface display.
In order to apply the present invention to practice, the ad hoc realization system that has counted a kind of remote monitoring of oil temperature of power transformer comprises power transformer, temperature pulse converter, distribution transformer monitoring terminal and server; Described temperature pulse converter is connected with described power transformer and described distribution transformer monitoring terminal respectively; Described distribution transformer monitoring terminal is connected with described server.
The present invention is further improved to be: described temperature pulse converter comprises that temperature sensor, I/U electric current change the voltage transformation module, V/F voltage changes the impulse transfer module; Described I/U electric current changes the voltage transformation module and is connected with described temperature sensor and V/F voltage commentaries on classics impulse transfer module respectively; Described temperature sensor is pressed close to the temperature-measuring part of described power transformer; Described I/U conversion module converts current signal to voltage signal; Described V/F conversion module converts voltage signal to the pulse signal of certain frequency; Described I/U conversion module and V/F conversion module adopt linear transformation.
The present invention is further improved to be: be separately installed with wireless transport module on described distribution transformer monitoring terminal and the described server; Described distribution transformer monitoring terminal and described server carry out data interaction by wireless network.
The present invention is further improved to be: the temperature pulse converter is converted to the oil temperature signal of power transformer pulse and this pulse is inserted the distribution transformer monitoring terminal; Described pulse is and the similar pulse of electronic electricity meter output pulses; Described oil temperature signal is changed in proportion; The described distribution transformer monitoring terminal configuration pulse meter property parameters horizontal pulse power transfer of going forward side by side.
The invention has the beneficial effects as follows: the present invention is by increasing a temperature pulse converter cheaply, utilize power load management system remote automatic meter reading path on the server cleverly, successfully solved those and be not suitable for installing the temperature of oil in transformer remote monitoring problem of temperature transmitter; This invention simple possible, with low cost, do not need to change existing distribution transformation and can reach the service precision requirement.
[description of drawings]
Fig. 1 is the schematic flow sheet of the implementation method of remote monitoring of oil temperature of power transformer of the present invention.
Fig. 2 is the connection block diagram of the realization system of remote monitoring of oil temperature of power transformer of the present invention.
Fig. 3 is the structured flowchart of the realization system temperature sensor of remote monitoring of oil temperature of power transformer of the present invention.
[embodiment]
Below in conjunction with the drawings and specific embodiments, the invention is further described.
As Fig. 1, a kind of implementation method of remote monitoring of oil temperature of power transformer comprises the steps:
S1 temperature pulse converter is converted to the oil temperature signal of power transformer pulse and this pulse is inserted the distribution transformer monitoring terminal;
The S2 distribution transformer monitoring terminal production burst table horizontal pulse power transfer of going forward side by side;
The S3 server obtains the performance number of this pulse meter, is converted to Temperature numerical and also this Temperature numerical is shown.
Be separately installed with wireless transport module on described distribution transformer monitoring terminal and the described server; Described distribution transformer monitoring terminal and described server carry out data interaction by wireless network.
Described pulse is and the similar pulse of electronic electricity meter output pulses; Described oil temperature signal is changed in proportion.
Described temperature pulse converter comprises that temperature sensor, I/U electric current change the voltage transformation module, V/F voltage changes the impulse transfer module; Described I/U electric current changes the voltage transformation module and is connected with described temperature sensor and V/F voltage commentaries on classics impulse transfer module respectively; Described temperature sensor is pressed close to the temperature-measuring part of described power transformer; Described I/U conversion module converts current signal to voltage signal; Described V/F conversion module converts voltage signal to the pulse signal of certain frequency; Described I/U conversion module and V/F conversion module adopt linear transformation.
Among the described step S2, this distribution transformer monitoring terminal configuration pulse meter property parameters; The pulse meter input end of this distribution transformer monitoring terminal receives the pulse signal that transmits from this temperature pulse converter, and carries out the pulse power conversion by setting the pulse constant.
Among the described step S3, this server carries out the copy reading performance number according to the stipulations of checking meter to this pulse meter, and carries out the reverse transformation number of degrees value of rising again according to former ratio conversion coefficient, and can pass through interface display.
As Fig. 2 is the embodiment that this method is applied to put into practice, and adopts a temperature pulse converter, utilizes the pulse meter-reading function and the GPRS teletransmission function of GPRS distribution transformer monitoring terminal again, can realize remote monitoring oil temperature very easily.Concrete grammar is as follows:
The temperature pulse converter converts the oil temperature signal of transformer to and the similar pulse of electronic electricity meter output pulses in proportion, inserts the pulse meter input end of distribution transformer monitoring terminal;
The distribution transformer monitoring terminal as a pulse meter (configuration pulse meter property parameters), by setting the pulse constant, is carried out the pulse power conversion with this road pulse input;
Distant place main website (monitoring computer) carries out copy reading performance number in a distant place according to the stipulations of checking meter to this pulse meter, and carries out the reverse transformation number of degrees value of rising again according to former conversion coefficient, and can be presented at the interface, foreground.And temperature sensor can be made of sensor, I/U modular converter and V/F modular converter.Temperature sensor probe is pressed close to the transformer temperature-measuring part, temperature sensor converts temperature signal to current signal, the I/U conversion converts current signal to voltage signal, and the V/F conversion module converts voltage signal to the pulse signal of certain frequency again, more than these conversion all be linear transformation, can not reduce its measuring accuracy after the conversion.Temperature measurement accuracy can reach 0.5 ℃, and this scheme hardware cost is very low, successfully solves the temperature of oil in transformer remote monitoring difficult problem that those discomforts attach together temperature transmitter, for management of power use department provides a solution of being convenient to implement.
In order to apply the present invention to practice, as Fig. 2 and Fig. 3, the ad hoc realization system that has counted a kind of remote monitoring of oil temperature of power transformer comprises power transformer 1, temperature pulse converter 2, distribution transformer monitoring terminal 3 and server 4; Described temperature pulse converter 2 is connected with described power transformer 1 and described distribution transformer monitoring terminal 3 respectively; Described distribution transformer monitoring terminal 3 is connected with described server 4, and in one embodiment, this server is the monitoring computer that electric power management system is housed.
Described temperature pulse converter 2 comprises that temperature sensor 11, I/U electric current change voltage transformation module 12, V/F voltage changes impulse transfer module 13; Described I/U electric current changes voltage transformation module 12 and is connected with described temperature sensor 11 and V/F voltage commentaries on classics impulse transfer module 13 respectively; Described temperature sensor 11 is pressed close to the temperature-measuring part of described power transformer 1; Described I/U conversion module 12 converts current signal to voltage signal; Described V/F conversion module 13 converts voltage signal to the pulse signal of certain frequency; Described I/U conversion module 12 and V/F conversion module 13 adopt linear transformation.
Be separately installed with wireless transport module on described distribution transformer monitoring terminal 3 and the described server 4; Described distribution transformer monitoring terminal 3 and described server 4 carry out data interaction by wireless network, and wireless network can utilize the gprs network, also can be a kind of in the wireless networks such as gps, wcdma, cdma2000, tdcdma.Carry out remote data transmission by the wireless transport module on distribution transformer monitoring terminal 3 and the described server 4,, realize monitoring its temperature to obtain Temperature numerical.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. the implementation method of a remote monitoring of oil temperature of power transformer is characterized in that: comprises the steps,
(S1) the temperature pulse converter is converted to the oil temperature signal of power transformer pulse and this pulse is inserted the distribution transformer monitoring terminal;
(S2) the distribution transformer monitoring terminal production burst table horizontal pulse power transfer of going forward side by side;
(S3) server obtains the performance number of this pulse meter, is converted to Temperature numerical and also this Temperature numerical is shown.
2. according to the implementation method of the described remote monitoring of oil temperature of power transformer of claim 1, it is characterized in that: be separately installed with wireless transport module on described distribution transformer monitoring terminal and the described server; Described distribution transformer monitoring terminal and described server carry out data interaction by wireless network.
3. according to the implementation method of the described remote monitoring of oil temperature of power transformer of claim 1, it is characterized in that: described pulse is and the similar pulse of electronic electricity meter output pulses; Described oil temperature signal is changed in proportion.
4. according to the implementation method of the described remote monitoring of oil temperature of power transformer of claim 1, it is characterized in that: described temperature pulse converter comprises that temperature sensor, I/U electric current change the voltage transformation module, V/F voltage changes the impulse transfer module; Described I/U electric current changes the voltage transformation module and is connected with described temperature sensor and V/F voltage commentaries on classics impulse transfer module respectively; Described temperature sensor is pressed close to the temperature-measuring part of described power transformer; Described I/U conversion module converts current signal to voltage signal; Described V/F conversion module converts voltage signal to the pulse signal of certain frequency; Described I/U conversion module and V/F conversion module adopt linear transformation.
5. according to the implementation method of any described remote monitoring of oil temperature of power transformer of claim 2-4, it is characterized in that: in the described step (S2), this distribution transformer monitoring terminal configuration pulse meter property parameters; The pulse meter input end of this distribution transformer monitoring terminal receives the pulse signal that transmits from this temperature pulse converter, and carries out the pulse power conversion by setting the pulse constant.
6. according to the implementation method of the described remote monitoring of oil temperature of power transformer of claim 5, it is characterized in that: in the described step (S3), this server carries out the copy reading performance number according to the stipulations of checking meter to this pulse meter, and carry out the reverse transformation number of degrees value of rising again, and can pass through interface display according to former ratio conversion coefficient.
7. the realization system of a remote monitoring of oil temperature of power transformer is characterized in that: comprise power transformer, temperature pulse converter, distribution transformer monitoring terminal and server; Described temperature pulse converter is connected with described power transformer and described distribution transformer monitoring terminal respectively; Described distribution transformer monitoring terminal is connected with described server.
8. according to the realization system of the described remote monitoring of oil temperature of power transformer of claim 7, it is characterized in that: described temperature pulse converter comprises that temperature sensor, I/U electric current change the voltage transformation module, V/F voltage changes the impulse transfer module; Described I/U electric current changes the voltage transformation module and is connected with described temperature sensor and V/F voltage commentaries on classics impulse transfer module respectively; Described temperature sensor is pressed close to the temperature-measuring part of described power transformer; Described I/U conversion module converts current signal to voltage signal; Described V/F conversion module converts voltage signal to the pulse signal of certain frequency; Described I/U conversion module and V/F conversion module adopt linear transformation.
9. according to the realization system of the described remote monitoring of oil temperature of power transformer of claim 7, it is characterized in that: be separately installed with wireless transport module on described distribution transformer monitoring terminal and the described server; Described distribution transformer monitoring terminal and described server carry out data interaction by wireless network.
10. it is characterized in that according to Claim 8 or the control system of 9 described low-speed display screens: the temperature pulse converter is converted to the oil temperature signal of power transformer pulse and this pulse is inserted the distribution transformer monitoring terminal; Described pulse is and the similar pulse of electronic electricity meter output pulses; Described oil temperature signal is changed in proportion; The described distribution transformer monitoring terminal configuration pulse meter property parameters horizontal pulse power transfer of going forward side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103054017A CN101629854B (en) | 2009-08-08 | 2009-08-08 | Implementation method and system for remote monitoring of oil temperature of power transformer |
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| CN2009103054017A CN101629854B (en) | 2009-08-08 | 2009-08-08 | Implementation method and system for remote monitoring of oil temperature of power transformer |
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| CN101629854A true CN101629854A (en) | 2010-01-20 |
| CN101629854B CN101629854B (en) | 2011-05-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262396A (en) * | 2010-12-07 | 2011-11-30 | 鞍钢集团矿业公司 | Temperature rising monitoring device and monitoring method of power transformer |
| CN104236728A (en) * | 2014-09-30 | 2014-12-24 | 国家电网公司 | Oil temperature monitoring device and oil temperature monitoring system for power transformers |
| CN112557724A (en) * | 2020-11-05 | 2021-03-26 | 浙江八达电子仪表有限公司 | VF high-frequency conversion direct-current analog quantity acquisition system based on modularization |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2293819Y (en) * | 1996-12-31 | 1998-10-07 | 西安交通大学 | Transformer winding hot spot on-line monitoring instrument |
| CN2569119Y (en) * | 2002-09-18 | 2003-08-27 | 新疆特变电工股份有限公司 | On-line monitor for hot-spot temp of transformer winding |
| CN2697614Y (en) * | 2004-03-30 | 2005-05-04 | 西安交通大学 | Contact type temp. sensor for on-line monitoring complete set switch |
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2009
- 2009-08-08 CN CN2009103054017A patent/CN101629854B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102262396A (en) * | 2010-12-07 | 2011-11-30 | 鞍钢集团矿业公司 | Temperature rising monitoring device and monitoring method of power transformer |
| CN104236728A (en) * | 2014-09-30 | 2014-12-24 | 国家电网公司 | Oil temperature monitoring device and oil temperature monitoring system for power transformers |
| CN112557724A (en) * | 2020-11-05 | 2021-03-26 | 浙江八达电子仪表有限公司 | VF high-frequency conversion direct-current analog quantity acquisition system based on modularization |
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| CN101629854B (en) | 2011-05-18 |
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