CN105241570A - System for continuously monitoring temperature of exciting transformer - Google Patents
System for continuously monitoring temperature of exciting transformer Download PDFInfo
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- CN105241570A CN105241570A CN201510741065.6A CN201510741065A CN105241570A CN 105241570 A CN105241570 A CN 105241570A CN 201510741065 A CN201510741065 A CN 201510741065A CN 105241570 A CN105241570 A CN 105241570A
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- exciting transformer
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Abstract
The invention discloses a system for continuously monitoring the temperature of an exciting transformer. The system comprises a temperature probe group and a temperature display module, wherein the temperature probe group comprises a first temperature probe and a second temperature probe which are respectively arranged on each phase of the exciting transformer and used for continuously monitoring the temperature of the exciting transformer in real time; and the temperature display module is connected with the temperature probe group on each phase of the exciting transformer and used for displaying the temperature monitored by the temperature probe group in real time. By adopting the system for continuously monitoring the temperature of the exciting transformer, the temperature of the exciting transformer can be continuously monitored; if the temperature is abnormal, corresponding treatment measures can be taken according to the temperature display change condition of the exciting transformer, so that the protection to the exciting transformer is strengthened and the safety of the exciting transformer is improved.
Description
Technical field
The invention belongs to generator excitation and voltage-regulation field, be specifically related to a kind of system that exciting transformer temperature is monitored continuously.
Background technology
The effect of generator excitation and voltage-regulating system is the excitation ensureing generator, sets up the rotating magnetic field of rotor, and generator connecting in parallel with system regulated synchronous required no-load voltage in the past; Generator connecting in parallel with system regulates the reactive power exchanged with electrical network later; When electric system generation suddenly-applied short circuit or shock loads, removal of load, magnet excitation or demagnetize are by force carried out, to improve operation stability and the reliability of electric system to generator; When short trouble appears in generator, demagnetization is carried out to generator, to avoid fault spread.In addition it also monitor generator unit stator, rotor electric parameter for report to the police with protection.
Generator excited system is to provide the device of magnetic field electric current of generator, comprises exciting transformer (or permanent magnetic motor), adjustment of field excitation and control element, magnetic field discharge or field suppression equipment, excitation unit, protective device etc.
Turbogenerator Excitation System adopt be band machine end exciting transformer from shunt excitation brushless excitation system, under nominal situation, field power supply comes from the exciting transformer of Generator end.Generator terminal voltage is supplied to the silicon controlled rectifier of automatic voltage regulator after exciting transformer step-down, is transferred to the magnetic pole of the stator of exciter after silicon controlled rectifier.Exciter rotor cutting magnetic pole of the stator magnetic field, thus produce alternating current, this alternating current after rotating rectifier rectification supply generator rotor winding winding to set up generator field.
When there is internal short-circuit in generator; by power-off protection action; controllable silicon is made to be in inverter mode by control loop; exciting current of exciter declines rapidly; field suppression equipment action subsequently; by controllable silicon output loop cut off and by the field copper short circuit of exciter on de-excitation resistance, exciting current finally drops to zero gradually.
The exciting transformer that existing generator adopts, being generally according to the makers' suggestion of exciting transformer, is two sections: 140 DEG C of trigger alarms by exciting transformer temperature protection initial designs; 150 DEG C of auto stops.Reason is that the insulation between Transformer Winding may damage because of overheated once transformer temperature is higher than 150 DEG C, thus causes producing short-circuit current between winding.If there is place short circuit between winding, certainly will local overheating be caused thus cause the damage that Domino effect causes transformer.
The present inventor finds after research; in two sections of existing exciting transformer temperature protection design; just can report to the police when only having exciting transformer temperature to reach 140 DEG C; and when reaching 150 DEG C, just understand auto stop; the system that neither one is monitored continuously to exciting transformer temperature, and then shortage takes corresponding treatment measures according to the situation of change of exciting transformer temperature.
Summary of the invention
For prior art exist exciting transformer temperature protection design two sections in; just can report to the police when only having exciting transformer temperature to reach 140 DEG C; and when reaching 150 DEG C, just understand the technical matters of auto stop; the invention provides a kind of system that exciting transformer temperature is monitored continuously; this system is to realize monitoring continuously the temperature of exciting transformer, so that staff takes corresponding treatment measures according to the situation of change of exciting transformer temperature.
To achieve these goals, the present invention adopts following technical scheme:
To the system that exciting transformer temperature is monitored continuously, described system comprises:
Temp probe group, described temp probe group comprises the first temp probe and the second temp probe, and described first temp probe and the second temp probe are arranged in each phase of exciting transformer respectively, for monitoring the temperature real-time continuous of exciting transformer;
Temperature display module, is connected with the temp probe group in each phase of described exciting transformer, for showing in real time the temperature of described temp probe group monitoring.
The system that exciting transformer temperature is monitored continuously provided by the invention; can realize monitoring continuously the temperature of exciting transformer; if it is abnormal to find what its temperature has; corresponding treatment measures can be taked according to the display situation of change of exciting transformer temperature; strengthen the protection to exciting transformer, improve the security of exciting transformer.
Further, the first temp probe in described temp probe group and the second temp probe are Platinium thermal electric resistance temperature probe.
Further, described temperature display module is display panels or the display panels with touch function.
Further, described monitoring system also comprises data acquisition module, and described data acquisition module is connected with temperature display module, for gathering the temperature signal of display.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of monitoring continuously exciting transformer temperature provided by the invention.
In figure, 1, temp probe group; 11, the first temp probe; 12, the second temp probe; 2, temperature display module.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Please refer to shown in Fig. 1, the present invention discloses a kind of system of monitoring continuously exciting transformer temperature, and described system comprises:
Temp probe group 1, described temp probe group 1 comprises the first temp probe 11 and the second temp probe 12, described first temp probe 11 and the second temp probe 12 are arranged in each phase (totally 3 phases) of exciting transformer respectively, for monitoring the temperature real-time continuous of exciting transformer;
Temperature display module 2, is connected with the temp probe group 1 in each phase of described exciting transformer, for showing in real time the temperature of described temp probe group monitoring.
Adopt the system that exciting transformer temperature is monitored continuously provided by the invention; can realize monitoring continuously the temperature of exciting transformer; if it is abnormal to find what its temperature has; corresponding treatment measures can be taked according to the display situation of change of exciting transformer temperature; strengthen the protection to exciting transformer, improve the security of exciting transformer.As a kind of embodiment, when 3 in exciting transformer has 2 phase temperature height mutually, the process of generator chaser can be allowed, namely adopt three to get two chasers.
As specific embodiment, the first temp probe 11 in described temp probe group 1 and the second temp probe 12 are platinum resistance thermometer sensor, (PT100) temp probe, its resistance can change along with the change of temperature, thus realizes the monitoring to exciting transformer temperature.
As specific embodiment, described temperature display module 2 is display panels or the display panels with touch function, for showing the exciting transformer temperature detected.
As specific embodiment, described monitoring system also comprises data acquisition module (not shown), described data acquisition module is connected with temperature display module 2, for gathering the temperature signal of display, so that relevant staff analyzes this temperature signal in advance, tentatively draw with this development trend that exciting transformer temperature variation may occur.
During concrete enforcement transformation, temp probe group i.e. 2 PT100 temp probes can be increased on every phase winding of exciting transformer, and cause the temperature display module on exciting transformer outer cover; The cable laying of 220V AC power and termination; Generator excitation transformer temperature display device and probe install additional.After transformation, on-the-spot tour exciting transformer winding temperature about 55 degree after unit full power, belongs to normal range.
These are only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing instructions of the present invention and accompanying drawing content to do, is directly or indirectly used in the technical field that other are relevant, all in like manner within scope of patent protection of the present invention.
Claims (4)
1. to the system that exciting transformer temperature is monitored continuously, it is characterized in that, described system comprises:
Temp probe group, described temp probe group comprises the first temp probe and the second temp probe, and described first temp probe and the second temp probe are arranged in each phase of exciting transformer respectively, for monitoring the temperature real-time continuous of exciting transformer;
Temperature display module, is connected with the temp probe group in each phase of described exciting transformer, for showing in real time the temperature of described temp probe group monitoring.
2. system of monitoring continuously exciting transformer temperature according to claim 1, is characterized in that, the first temp probe in described temp probe group and the second temp probe are Platinium thermal electric resistance temperature probe.
3. system of monitoring continuously exciting transformer temperature according to claim 1, is characterized in that, described temperature display module is display panels or the display panels with touch function.
4. the system that exciting transformer temperature is monitored continuously according to any one of claim 1-3, it is characterized in that, described monitoring system also comprises data acquisition module, and described data acquisition module is connected with temperature display module, for gathering the temperature signal of display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510741065.6A CN105241570A (en) | 2015-11-03 | 2015-11-03 | System for continuously monitoring temperature of exciting transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510741065.6A CN105241570A (en) | 2015-11-03 | 2015-11-03 | System for continuously monitoring temperature of exciting transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105241570A true CN105241570A (en) | 2016-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510741065.6A Pending CN105241570A (en) | 2015-11-03 | 2015-11-03 | System for continuously monitoring temperature of exciting transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941364A (en) * | 2017-12-15 | 2018-04-20 | 中国长江电力股份有限公司 | A kind of generator excitation equipment temperature measuring equipment and method based on the more temperature transducers of infrared, fluorescence optical fiber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0125050A1 (en) * | 1983-04-13 | 1984-11-14 | Niagara Mohawk Power Corporation | Apparatus for measuring the temperature and other parameters of an electric power conductor |
| CN101329940A (en) * | 2007-12-06 | 2008-12-24 | 杭州华立仪表有限公司 | Temperature controller for dry transformer |
| CN202018610U (en) * | 2011-03-18 | 2011-10-26 | 华东天荒坪抽水蓄能有限责任公司 | Temperature monitoring device for exciting transformer |
| CN202473572U (en) * | 2012-02-29 | 2012-10-03 | 山东威特变压器厂 | Exciting transformer |
| CN202938928U (en) * | 2012-11-22 | 2013-05-15 | 武陟县电业总公司 | On-line detection system for transformer winding temperature |
| CN203433394U (en) * | 2013-09-10 | 2014-02-12 | 大唐贵州黄花寨水电开发有限公司 | Temperature control system for exciting transformer of generator set |
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2015
- 2015-11-03 CN CN201510741065.6A patent/CN105241570A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0125050A1 (en) * | 1983-04-13 | 1984-11-14 | Niagara Mohawk Power Corporation | Apparatus for measuring the temperature and other parameters of an electric power conductor |
| CN101329940A (en) * | 2007-12-06 | 2008-12-24 | 杭州华立仪表有限公司 | Temperature controller for dry transformer |
| CN202018610U (en) * | 2011-03-18 | 2011-10-26 | 华东天荒坪抽水蓄能有限责任公司 | Temperature monitoring device for exciting transformer |
| CN202473572U (en) * | 2012-02-29 | 2012-10-03 | 山东威特变压器厂 | Exciting transformer |
| CN202938928U (en) * | 2012-11-22 | 2013-05-15 | 武陟县电业总公司 | On-line detection system for transformer winding temperature |
| CN203433394U (en) * | 2013-09-10 | 2014-02-12 | 大唐贵州黄花寨水电开发有限公司 | Temperature control system for exciting transformer of generator set |
Non-Patent Citations (3)
| Title |
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| 中国水力发电工程学会电网调峰与抽水蓄能专业委员会组: "《抽水蓄能电站工程建设文集》", 31 August 2011 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941364A (en) * | 2017-12-15 | 2018-04-20 | 中国长江电力股份有限公司 | A kind of generator excitation equipment temperature measuring equipment and method based on the more temperature transducers of infrared, fluorescence optical fiber |
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Application publication date: 20160113 |
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| RJ01 | Rejection of invention patent application after publication |