CN105371982A - Distributed optical fiber temperature measurement system and method used for dry type reactor - Google Patents
Distributed optical fiber temperature measurement system and method used for dry type reactor Download PDFInfo
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- CN105371982A CN105371982A CN201510829169.2A CN201510829169A CN105371982A CN 105371982 A CN105371982 A CN 105371982A CN 201510829169 A CN201510829169 A CN 201510829169A CN 105371982 A CN105371982 A CN 105371982A
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Abstract
The invention belongs to the technical field of high voltage electric power equipment, and particularly relates to a distributed optical fiber temperature measurement system and method used for a dry type reactor. The system comprises the dry type reactor and also comprises temperature-sensitive optical fibers, transmission optical cables, an optical fiber temperature measurement instrument, a monitoring host and a sound-light alerter. The temperature-sensitive optical fibers are arranged in the air channels of the dry type reactor. The temperature-sensitive optical fibers with great insulating property are utilized to act as sensors to be arranged in the air channels of the dry type reactor for monitoring the problems of the reactor, and a strategy is provided so that early warning and alarm signals are provided when temperature values are abnormal, and a situation that faults further develop into accidents can be prevented. The system has the characteristics of simple structure and convenient operation so that working safety can be significantly enhanced.
Description
Technical field
The invention belongs to high voltage electric power equip ment monitoring technical field, particularly relate to a kind of temperature-measuring system of distributed fibers for dry reactor and method.
Background technology
Dry reactor is compared oil-immersed electric reactor and is had that loss is little, noise is low, intensity is high, easy for installation, safeguard that simple, reactance value is linear etc. show advantage, therefore obtain and develop rapidly and widespread use.In recent years, the Northeast of China is along with the operation of a large amount of low pressure dry reactor equipment in parallel, and Problems existing also constantly comes out, and successively there occurs a lot of 66kV dry reactor fault in parallel, continuous scaling loss even occurs.Axially dispel the heat air flue local all along with serious superheating phenomenon by the reactor analyzed in discovery accident.Accident has all found serious creepage burning trace and breakdown channel in dissecting in reactor heat radiation air flue.Main cause is resin cracks, stock-price forecast causes local overheating even shelf depreciation, finally develops into penetrability insulation fault.
At present, dry reactor is equipped with overcurrent protective device in transformer station, but overcurrent protection setting valve is bigger than normal, once its action such as to break down, and reactor scaling loss cause fire failure.
Summary of the invention
In order to solve the problem, the invention provides a kind of temperature-measuring system of distributed fibers for dry reactor and method, object is to provide a kind of when temperature value is abnormal, early warning and alerting signal are provided, fault is prevented to be further developed into accident, structure is simple, easy to operate, a kind of temp measuring system of high safety and method.
The present invention is achieved through the following technical solutions:
For a temperature-measuring system of distributed fibers for dry reactor, comprise dry reactor, also comprise temperature sensing optical fiber, transmission cable, optic fiber thermometer, monitoring main frame and audible-visual annunciator, wherein temperature sensing optical fiber is arranged in the air flue of dry reactor; Optic fiber thermometer, monitoring main frame and audible-visual annunciator is provided with in screen cabinet, optic fiber thermometer is connected with transmission cable, after converting the light signal of temperature sensing optical fiber to temperature signal, be connected with monitoring main frame by connection, on monitoring main frame, and send temperature pre-warning and alerting signal to audible-visual annunciator according to preset value.
Described dry reactor is made up of some parallel connection encapsulatings, is formed the air flue of reactor heat transmission between each encapsulating by stay; Temperature sensing optical fiber is arranged from top to bottom in the air flue of reactor, and adopts the mode of fiber optic loop to connect in the middle and upper part of air flue
Described temperature sensing optical fiber, then to be passed by another upper airways through in another air flue in the lower end of an air flue, is arranged in successively in each air flue.
Described temperature sensing optical fiber adopts electrically insulating silicone rubber to be fixed on the top and bottom of each gas channel supporting bar.
Described fiber optic loop is that temperature sensing optical fiber coiling is formed, and is fixed with electrically insulating silicone rubber, a ring texture of formation.
For a distributed optical fiber temperature measuring method for dry reactor, be adopt distributed temperature sensing optical fiber as temperature sensing unit, by measuring the temperature in reactor air flue, the temperature variation that monitoring reactor internal fault causes; Specifically by; after passing certain distance in the air flue that temperature sensing optical fiber is arranged in dry reactor; it is converted to transmission cable by fiber optic closure after passing reactor; be connected in the screen cabinet of relay protection indoor near reactor; optic fiber thermometer, monitoring main frame and audible-visual annunciator is provided with in screen cabinet; optic fiber thermometer is connected with transmission cable; after converting the light signal of temperature sensing optical fiber to temperature signal; be connected with monitoring main frame by connection; on monitoring main frame, and send temperature pre-warning and alerting signal to audible-visual annunciator according to preset value.
Described send temperature pre-warning and alerting signal to audible-visual annunciator according to preset value, comprise following operation steps:
(1) when reactor temperature rise is risen fast, and when wherein the temperature rise of any one sensor is greater than 90K, start early warning, and in prompting station, whether personnel's reactor is in overload; If reactor is in overload, then reactor normal operation, if reactor is not in overload, then the interior personnel that need to stand check reactor;
(2) when reactor temperature rise is between 90K ~ 115K, and the duration be greater than 2 constantly little, start to report to the police, and in prompting station, whether personnel's reactor is still in overload; If reactor is not in overload, then the interior personnel that need to stand check reactor;
(3) after reactor overload terminates, and when the temperature rise of all the sensors drops to below 90K, early warning is removed;
(4) when reactor temperature rise is risen fast, and when wherein the temperature rise of any one sensor is greater than 115K, start to report to the police, and in prompting station, personnel check reactor;
(5) when reactor temperature rise climbing speed is greater than 2K/5min, start early warning, and in prompting station, whether personnel's reactor is in initial power transmission stage or overload stage; If reactor is in initial power transmission stage or overload stage, then reactor normal operation, if reactor is not in initial power transmission stage or overload stage, then the interior personnel that need to stand check reactor;
(6) when below 2K/5min falls back in reactor temperature rise climbing speed, early warning is removed;
(7) reactor through running for many years, insulating property also will be progressively deteriorated, by the same time compares with the temperature rise situation of change of environmental baseline year by year to reactor, can judge whether reactor exists exception.
Advantage of the present invention and the beneficial effect produced are:
The invention provides a kind of temperature-measuring system of distributed fibers for dry reactor and method, utilize the temperature sensing optical fiber with good insulating performance as sensor, be arranged in the air flue of dry reactor, the problem of monitoring reactor, and a kind of strategy is provided, when temperature value is abnormal, early warning and alerting signal is provided, prevents fault to be further developed into accident.There is structure simple, easy to operate, the security of work can be significantly improved.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is that optical fiber is at reactor interior arrangement structure schematic diagram;
Fig. 2 is that optical fiber is at reactor internal placement close-up schematic view;
Fig. 3 is dry reactor temp measuring system structural representation;
Fig. 4 is dry reactor temperature pre-warning and alarm flow figure.
In figure: temperature sensing optical fiber 1, transmission cable 2, optic fiber thermometer 3, monitoring main frame 4 and audible-visual annunciator 5, stay 6, air flue 7, fiber optic loop 8.
Embodiment
The present invention is a kind of temperature-measuring system of distributed fibers for dry reactor, utilizes the temperature sensing optical fiber with good insulating performance as sensor, is arranged in the air flue of dry reactor.As shown in Figure 1, temperature sensing optical fiber 1, transmission cable 2, optic fiber thermometer 3, monitoring main frame 4 and audible-visual annunciator 5 is comprised.
As depicted in figs. 1 and 2, dry reactor is made up of some parallel connection encapsulatings, the air flue 7 forming reactor heat transmission by stay between each encapsulating is convenient to heat radiation, temperature sensing optical fiber 1 is arranged from top to bottom in the air flue of reactor, and the position of easily breaking down, namely the middle and upper part of air flue adopts the mode of fiber optic loop 8, increases measuring accuracy, carries out emphasis monitoring.Temperature sensing optical fiber is from top to bottom arranged in this air flue 7, by this air flue 7 lower end through in another air flue, then is passed by another upper airways, is arranged in successively in each air flue.Described temperature sensing optical fiber 1 adopts electrically insulating silicone rubber to be fixed on the top and bottom of each gas channel supporting bar 6.Described fiber optic loop 8 is temperature sensing optical fiber coiling formation, and is fixed with electrically insulating silicone rubber, a ring texture of formation.
For a distributed optical fiber temperature measuring method for dry reactor, be adopt distributed temperature sensing optical fiber as temperature sensing unit, by measuring the temperature in reactor air flue, the temperature variation that monitoring reactor internal fault causes.
During concrete operations, as shown in Figure 2, after passing certain distance in the air flue 7 that temperature sensing optical fiber 1 is arranged in dry reactor, be converted to transmission cable 2 by fiber optic closure after it passes reactor, be connected in the screen cabinet of relay protection indoor near reactor.Optic fiber thermometer 3, monitoring main frame 4 and audible-visual annunciator 5 is provided with in screen cabinet, optic fiber thermometer 3 is connected with transmission cable 2, after converting the light signal of temperature sensing optical fiber 1 to temperature signal, be connected with monitoring main frame 4 by connection, on monitoring main frame, and send temperature pre-warning and alerting signal to audible-visual annunciator 5 according to preset value.
As shown in Figure 3, described send temperature pre-warning and alerting signal to audible-visual annunciator 5 according to preset value, comprise following operation steps:
(1) when reactor temperature rise is risen fast, and when wherein the temperature rise of any one sensor is greater than 90K, start early warning, and in prompting station, whether personnel's reactor is in overload.If reactor is in overload, then reactor normal operation, if reactor is not in overload, then the interior personnel that need to stand check reactor.
(2) when reactor temperature rise is between 90K ~ 115K, and the duration be greater than 2 constantly little, start to report to the police, and in prompting station, whether personnel's reactor is still in overload.If reactor is not in overload, then the interior personnel that need to stand check reactor.
(3) after reactor overload terminates, and when the temperature rise of all the sensors drops to below 90K, early warning is removed.
(4) when reactor temperature rise is risen fast, and when wherein the temperature rise of any one sensor is greater than 115K, start to report to the police, and in prompting station, personnel check reactor.
(5) when reactor temperature rise climbing speed is greater than 2K/5min, start early warning, and in prompting station, whether personnel's reactor is in initial power transmission stage or overload stage.If reactor is in initial power transmission stage or overload stage, then reactor normal operation, if reactor is not in initial power transmission stage or overload stage, then the interior personnel that need to stand check reactor.
(6) when below 2K/5min falls back in reactor temperature rise climbing speed, early warning is removed.
(7) reactor through running for many years, insulating property also will be progressively deteriorated, by the same time compares with the temperature rise situation of change of environmental baseline year by year to reactor, can judge whether reactor exists exception.
Claims (7)
1. the temperature-measuring system of distributed fibers for dry reactor, comprise dry reactor, it is characterized in that, also comprise temperature sensing optical fiber (1), transmission cable (2), optic fiber thermometer (3), monitoring main frame (4) and audible-visual annunciator (5), wherein temperature sensing optical fiber (1) is arranged in the air flue of dry reactor; Optic fiber thermometer (3), monitoring main frame (4) and audible-visual annunciator (5) is provided with in screen cabinet, optic fiber thermometer (3) is connected with transmission cable (2), after converting the light signal of temperature sensing optical fiber (1) to temperature signal, be connected with monitoring main frame (4) by connection, on monitoring main frame, and send temperature pre-warning and alerting signal to audible-visual annunciator (5) according to preset value.
2. a kind of temperature-measuring system of distributed fibers for dry reactor according to claim 1, is characterized in that, described dry reactor is made up of some parallel connection encapsulatings, is formed the air flue (7) of reactor heat transmission between each encapsulating by stay; Temperature sensing optical fiber (1) is arranged from top to bottom in the air flue of reactor, and adopts the mode of fiber optic loop (8) to connect in the middle and upper part of air flue.
3. a kind of temperature-measuring system of distributed fibers for dry reactor according to claim 1, it is characterized in that, described temperature sensing optical fiber (1) in the lower end of an air flue (7) through in another air flue, passed by another upper airways again, be arranged in successively in each air flue.
4. a kind of temperature-measuring system of distributed fibers for dry reactor according to claim 1, is characterized in that, described temperature sensing optical fiber (1) adopts electrically insulating silicone rubber to be fixed on the top and bottom of each gas channel supporting bar (6).
5. a kind of temperature-measuring system of distributed fibers for dry reactor according to claim 2, it is characterized in that, described fiber optic loop (8) is temperature sensing optical fiber (1) coiling formation, and is fixed with electrically insulating silicone rubber, a ring texture of formation.
6. for a distributed optical fiber temperature measuring method for dry reactor, it is characterized in that, is adopt distributed temperature sensing optical fiber as temperature sensing unit, by measuring the temperature in reactor air flue, and the temperature variation that monitoring reactor internal fault causes, specifically by, after passing certain distance in the air flue (7) that temperature sensing optical fiber (1) is arranged in dry reactor, transmission cable (2) is converted to by fiber optic closure after it passes reactor, be connected in the screen cabinet of relay protection indoor near reactor, optic fiber thermometer (3) is provided with in screen cabinet, monitoring main frame (4) and audible-visual annunciator (5), optic fiber thermometer (3) is connected with transmission cable (2), after converting the light signal of temperature sensing optical fiber (1) to temperature signal, be connected with monitoring main frame (4) by connection, on monitoring main frame, and send temperature pre-warning and alerting signal to audible-visual annunciator (5) according to preset value.
7. a kind of distributed optical fiber temperature measuring method for dry reactor according to claim 6, is characterized in that, described sends temperature pre-warning and alerting signal to audible-visual annunciator according to preset value, comprises following operation steps:
(1) when reactor temperature rise is risen fast, and when wherein the temperature rise of any one sensor is greater than 90K, start early warning, and in prompting station, whether personnel's reactor is in overload; If reactor is in overload, then reactor normal operation, if reactor is not in overload, then the interior personnel that need to stand check reactor;
(2) when reactor temperature rise is between 90K ~ 115K, and the duration be greater than 2 constantly little, start to report to the police, and in prompting station, whether personnel's reactor is still in overload; If reactor is not in overload, then the interior personnel that need to stand check reactor;
(3) after reactor overload terminates, and when the temperature rise of all the sensors drops to below 90K, early warning is removed;
(4) when reactor temperature rise is risen fast, and when wherein the temperature rise of any one sensor is greater than 115K, start to report to the police, and in prompting station, personnel check reactor;
(5) when reactor temperature rise climbing speed is greater than 2K/5min, start early warning, and in prompting station, whether personnel's reactor is in initial power transmission stage or overload stage; If reactor is in initial power transmission stage or overload stage, then reactor normal operation, if reactor is not in initial power transmission stage or overload stage, then the interior personnel that need to stand check reactor;
(6) when below 2K/5min falls back in reactor temperature rise climbing speed, early warning is removed;
(7) reactor through running for many years, insulating property also will be progressively deteriorated, by the same time compares with the temperature rise situation of change of environmental baseline year by year to reactor, can judge whether reactor exists exception.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510829169.2A CN105371982A (en) | 2015-11-25 | 2015-11-25 | Distributed optical fiber temperature measurement system and method used for dry type reactor |
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| CN201510829169.2A CN105371982A (en) | 2015-11-25 | 2015-11-25 | Distributed optical fiber temperature measurement system and method used for dry type reactor |
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Cited By (3)
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| CN109540330A (en) * | 2018-11-01 | 2019-03-29 | 国网宁夏电力有限公司检修公司 | Reactor on-line monitoring method based on grating thermometric |
| CN110034538A (en) * | 2019-03-28 | 2019-07-19 | 中国南方电网有限责任公司超高压输电公司柳州局 | A kind of dry reactor non-ionizing energy loss system |
| CN114509671A (en) * | 2022-04-20 | 2022-05-17 | 中国铁路设计集团有限公司 | GIS equipment contact state and load condition judgment method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109540330A (en) * | 2018-11-01 | 2019-03-29 | 国网宁夏电力有限公司检修公司 | Reactor on-line monitoring method based on grating thermometric |
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| CN110034538B (en) * | 2019-03-28 | 2020-09-29 | 中国南方电网有限责任公司超高压输电公司柳州局 | Dry-type reactor non-electric quantity protection system |
| CN114509671A (en) * | 2022-04-20 | 2022-05-17 | 中国铁路设计集团有限公司 | GIS equipment contact state and load condition judgment method and system |
| CN114509671B (en) * | 2022-04-20 | 2022-07-19 | 中国铁路设计集团有限公司 | GIS equipment contact state and load condition judgment method and system |
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Application publication date: 20160302 |