CN103151196B - State indicating instrument of three-working-position operating mechanism of high-voltage switch cabinet and state indicating method thereof - Google Patents
State indicating instrument of three-working-position operating mechanism of high-voltage switch cabinet and state indicating method thereof Download PDFInfo
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Abstract
The invention discloses a state indicating instrument of a three-working-position operating mechanism of a high-voltage switch cabinet and a state indicating method thereof. The indicating instrument comprises a grounding switch displacement sensor, an isolating switch displacement sensor, a switching amount input circuit, a key circuit, a microprocessor, a grounding switch state indicating circuit, an isolating switch state indicating circuit, a grounding switch action counting circuit, an isolating switch action counting circuit, a switching amount output circuit, a power circuit and a working state indicating circuit, wherein the grounding switch displacement sensor, the isolating switch displacement sensor, the switching amount input circuit, the key circuit, the grounding switch state indicating circuit, the isolating switch state indicating circuit, the grounding switch action counting circuit, the isolating switch action counting circuit, the switching amount output circuit, the power circuit and the working state indicating circuit are respectively connected with the microprocessor. The state indicating instrument disclosed by the invention has the advantage that position information of an isolating switch and a grounding switch can be acquired in real time.
Description
Technical field
The present invention relates to a kind of high-tension switch cabinet three station operating mechanism state indicator being used to indicate high-tension switch cabinet three station operating mechanism working condition.
Background technology
At present, Modern Transducer Technology, micro-computer processing technology, condition monitoring and fault diagnosis technology are widely applied in high voltage switchgear field all, have occurred the Intelligent high-voltage switch equipment differed from one another.The rated voltage that AM General company develops is 5.5 ~ 26kV, rated current is the high-voltage and current-limitation fuse of 65 ~ 175A, and not only size is little, rated current is large, breaking capacity is strong, can also the time-current characteristic of Based Intelligent Control fuse.Japanese fuji company with the addition of overcurrent relay, detection current instrument transformer and various transducer on original vacuum circuit-breaker; circuit breaker is possessed self-diagnostic function and transfer function; constitute the intelligent cell integrating supervision, communication, control and protection; thus enhance the function of circuit breaker, improve reliability.High-tension switch cabinet intelligent centralized control/protected location that ABB AB releases in the recent period; the functions such as control, signal, protection, measurement and supervision are combined; make high-tension switch cabinet have continuously from monitor and with the function such as power station control system is directly connected; centralized control/protected location has the multi-protective function such as current limliting, overvoltage and under voltage, overheated and earth fault, and can combination in any as required.Centralized control/protected location also has intelligent diagnostics ability, the data analysis that can monitor it and process, carries out failure predication, judges the remaining life of switch and calculate service interval.
Last decade, China's High-voltage Switchgear Industry is mainly designed to main with enterprise's self-developing, simultaneously stability advanced foreign technology carries out secondary development, and sf6 and vacuum switch have become that industry is high, the leading products of medium-voltage equipment, substantially achieve industry product non-oil ultra high vacuum system.The technical parameter of industry major product is close or reach international like product level, high-voltage switch gear product meets user's requirement substantially, but can't meet the need of market completely, the new high-tech product of some important market in urgent needs and Partial key material, current still main dependence on import, current domestic intelligent high vol tage switchgear is still by company monopolizings such as external ABB, Japanese fuji, AM General and French MG.
China's high-voltage switch gear market demand situation:
(1) calculate high-voltage switch gear according to capacity of installed generator per capita and still have 30 years sustainable development phases
The capacity of installed generator expection of the year two thousand twenty China reaches 9.6 hundred million kw, but the year two thousand twenty China population is about 14.4 hundred million, when the time comes, China per capita capacity of installed generator also only reach the world average level (0.6kw/ people) of calendar year 2001, compared with developed countries, gap is still very large.If according to the viewpoint of economist, China per capita capacity of installed generator reaches 1kw, is only and enters electricity consumption well-off society, also needs increase by 1,000,000,000 kw installed capacity.If calculate by every annual adding new capacity 3,000 ten thousand kw, then need more than 30 year time, this just means that China's High-voltage Switchgear Industry also has more than 30 year sustainable development period.
(2) power grid construction has a extensive future the demand that will greatly pull high-voltage switch gear
Because the energy resource structure before China's the year two thousand twenty is still based on coal, coal electricity accounts for 70% of gross generation, and water power accounts for 18%, and other energy (nuclear power, pneumoelectric, wind-powered electricity generation etc.) account for about 10%.The two large main energy sources as China: coal electricity and water power are mostly distributed in North China, northwest, southwest.And power load center is in southeastern coast industry developed regions, therefore, development long distance powedr transmission equipment and the highly reliable national supply network of technology, construction one imperative.According to power planning, the north that China is carrying out transferring electricity from the west to the east, in, the construction of three passages in south, the power transmission scale of West is about 2,500 ten thousand kw for 2005, and fifty-five million kw in 2010, the year two thousand twenty is increased to 100,000,000 more than kw.In addition, also having with Gorges power network is the total dry passage supported, thus realizes north and south confession mutually, transregional networking.
According to the planning of Eleventh Five-Year Plan power industry initial development, national by newly-built 330 kilovolts and 3.6 ten thousand kilometers, above alternating current circuit, power transformation capacity 1.8 hundred million kilovolt-amperes.In addition, country has started to build 750 kv grids on the kv grid of northwest 330, and expect the year two thousand twenty, the Northwest will build up 750 KV transmission line 3000 ~ 5500 kilometers, power transformation capacity about 2,000 ten thousand kilovolt-amperes.By 2010,330 kilovolts, the whole nation and above AC and DC circuit will reach 120,000 kilometers, and power transformation capacity reaches 4.8 hundred million kilovolt-amperes.
The Eleventh Five-Year Plan period also DC transmission engineering will be planned to build, circuit overall length 4800 kilometers, transmission line capability 1,236 ten thousand kilowatts.2011 ~ the year two thousand twenty, also by planning construction DC engineering 11, build together 22 to the DC transmission engineering planning of the year two thousand twenty China, direct current transportation total capacity will more than 6,000 ten thousand kilowatts.Require the autonomy-oriented, the production domesticization that realize DC equipment as quickly as possible simultaneously, progressively accomplish complete, the autonomous manufacture supply of autonomous consulting research, autonomous Design, independently build debugging, the previous work that the DC equipment actively carrying out higher voltage order one manufactures.
± 500kv direct current complete set of equipments, intelligent equipment, high reliability (less, non-maintaining) equipment belong to the important symbol of China's high voltage switchgear " 15 ", the Eleventh Five-Year Plan period three large technological progresses together.Power grid construction and development are by the development of energizes high-pressure, EHV transmission AC and DC switchgear.
(3) growth requirement of other industry is that High-voltage Switchgear Industry opened new markets by 2010,4 north and south, the thing mainline railways such as Beijing-Harbin, Beijing-Shanghai, capital wide, Long Hai be electrified and interconnection of large-scale power grids by round Realization, Eleventh Five-Year Plan electric railway in latter stage mileage will reach more than 2.6 ten thousand kilometers, in addition, at the plateau electrical equipment needed for the Qinghai-Tibet electric railway of building, " the dedicated electric appliance equipment etc. of the industry such as the large pump in West-east Gas, " south water to north " and metallurgy, coal all has substantial connection with high voltage switchgear industry.
So, the high-tension switch cabinet three station operating mechanism state indicator of the present invention's design, can the state of Real-Time Monitoring switch, to the fail safe improving high-tension switch cabinet, there is very important effect, the development promoting China's high-voltage switch gear industry is had very important significance, and wide market.
Summary of the invention
Technical problem to be solved by this invention is the position signalling how utilizing the displacement transducer be arranged on earthed switch and isolating switch to obtain earthed switch and isolating switch, the operating state of real-time understanding earthed switch and isolating switch and action frequency, three stations, namely three kinds of states are: (1) earthed switch at co-bit, isolating switch in a point position; (2) isolating switch is dividing a position at co-bit, earthed switch; (3) earthed switch is dividing a position, isolating switch in a point position.
For solving the problems of the technologies described above, the invention provides a kind of high-tension switch cabinet three station operating mechanism state indicator, comprise earthed switch displacement transducer, isolating switch displacement transducer, switching value input circuit, key circuit, microprocessor, earthed switch condition indication circuit, isolating switch condition indication circuit, earthed switch movement counting circuit, isolating switch movement counting circuit, switching value output circuit, power circuit and working state indicating circuit, the described output of earthed switch displacement transducer is connected with the input of microprocessor, the output of isolating switch displacement transducer is connected with the input of microprocessor, the output of switching value input circuit is connected with the input of microprocessor, the output of key circuit is connected with the input of microprocessor, the output of microprocessor is connected with the input of earthed switch condition indication circuit, the output of microprocessor is connected with the input of isolating switch condition indication circuit, the output of microprocessor is connected with the input of earthed switch movement counting circuit, the output of microprocessor is connected with the input of isolating switch movement counting circuit, the output of microprocessor is connected with the input of switching value output circuit, the output of power circuit is connected with the input of microprocessor, the output of microprocessor is connected with the input of working state indicating circuit.
Earthed switch displacement transducer and isolating switch displacement transducer are arranged on the operating mechanism of earthed switch and isolating switch respectively, earthing switch operating mechanism can drive earthed switch displacement transducer to move, isolating switch operating mechanism can drive isolating switch displacement transducer to move, according to earthed switch displacement transducer and the isolating switch displacement transducer displacement reflection earthed switch of movement and isolating switch operating position respectively, move number of times determination earthed switch in the life-span with isolating switch according to earthed switch displacement transducer and isolating switch displacement transducer.
Earthed switch condition indication circuit comprises the first light-emitting section, and the input of the first light-emitting section is connected with microprocessor, and the complete bright expression earthed switch of the first light-emitting section is in a point position, and entirely go out and represent that earthed switch is in co-bit, a part of bright expression earthed switch is a certain position in centre
;isolating switch condition indication circuit comprises the second light-emitting section, the input of the second light-emitting section is connected with microprocessor, the complete bright expression isolating switch of second light-emitting section of isolating switch condition indication circuit is in co-bit, entirely go out and represent that isolating switch is in a point position, a part of bright expression isolating switch is a certain position in centre;
Earthed switch movement counting circuit and isolating switch movement counting circuit show the action frequency of earthed switch and isolating switch, to understand the mechanical endurance of earthed switch and isolating switch respectively by charactron or liquid crystal display screen.
Working state indicating circuit is at normal working position by the 3rd luminous tube instruction earthed switch and isolating switch, or mechanism is stuck in non-normal working position, and the input of the 3rd luminous tube is connected with microprocessor.
Switching value output circuit adopts relay tip to export, the positional information of earthed switch and isolating switch is delivered to machine exterior, switching value output circuit comprises earthed switch relay, isolating switch relay, earthed switch output wiring terminal and isolating switch output wiring terminal, the contact of described earthed switch relay is connected with earthed switch output wiring terminal, and the contact of isolating switch relay is connected with isolating switch output wiring terminal.
Switching value input circuit adopts the input of low and high level signal.
The state indication method of high-tension switch cabinet three station operating mechanism state indicator of the present invention, comprises the following steps:
1) gathered earthed switch and isolating switch location status information by earthed switch displacement transducer, isolating switch displacement transducer, and information is input to microprocessor;
2) microprocessor processes earthed switch and isolating switch location status data, when earthed switch and isolating switch stop more than 30 seconds in centre position, microprocessor exports warning message to working state indicating circuit, 3rd luminous tube flicker of working state indicating circuit, the earthed switch relay of Simultaneous Switching amount output circuit or the normal battle of isolating switch relay close, when the make and break contact of switching value input circuit closes alarm releasing, when the make and break contact of switching value input circuit disconnects, Normal Alarm;
3) when isolating switch is by dividing position to co-bit, after putting in place, the isolating switch relay normally closed contact change of switching value output circuit is often opened, and another contact of isolating switch relay becomes normally closed by often opening simultaneously; When isolating switch by co-bit to a point position, after putting in place, the normally closed change of isolating switch relay of switching value output circuit is often opened, and another contact of isolating switch relay becomes normally closed by often opening simultaneously;
4) when earthed switch is by dividing position to co-bit, after putting in place, the earthed switch relay normally closed contact change of switching value output circuit is often left, and another contact of earthed switch relay becomes normally closed by often opening simultaneously; When earthed switch by co-bit to a point position, after putting in place, the earthed switch relay normally closed contact of switching value output circuit becomes and often opens, and another contact of earthed switch relay becomes normally closed by often opening simultaneously.
The beneficial effect that the present invention reaches: (1) high-tension switch cabinet three station operating mechanism of the present invention state indicator, position transducer is arranged on the operating mechanism of earthed switch and isolating switch, along with isolating switch and earthed switch motion, can the positional information of Real-time Collection isolating switch and earthed switch.(2) high-tension switch cabinet three station operating mechanism state indicator of the present invention, adopts light-emitting section to show isolating switch and earthed switch location status intuitively, and can remember action frequency.
Accompanying drawing explanation
Fig. 1 is the high-tension switch cabinet three station operating mechanism state indicator schematic diagram of embodiment 1;
Fig. 2 is earthed switch displacement transducer and the isolating switch displacement transducer position view of embodiment 1.
Embodiment
See Fig. 1, Fig. 2, the high-tension switch cabinet three station operating mechanism state indicator of the present embodiment, comprises earthed switch displacement transducer 1, isolating switch displacement transducer 2, switching value input circuit 3, key circuit 4, microprocessor 5, earthed switch condition indication circuit 6, isolating switch condition indication circuit 7, earthed switch movement counting circuit 8, isolating switch movement counting circuit 9, switching value output circuit 10, power circuit 11 and working state indicating circuit 12.
Earthed switch displacement transducer 1 and isolating switch displacement transducer 2 are arranged on the operating mechanism of earthed switch and isolating switch respectively, earthing switch operating mechanism can drive earthed switch displacement transducer 1 to move, isolating switch operating mechanism can drive isolating switch displacement transducer 2 to move, according to earthed switch displacement transducer 1 and the isolating switch displacement transducer 2 displacement reflection earthed switch of movement and isolating switch operating position respectively.
Earthed switch condition indication circuit 6 comprises the first light-emitting section, the input of the first light-emitting section is connected with microprocessor 5, the complete bright expression earthed switch of first light-emitting section is in a point position, and entirely go out and represent that earthed switch is in co-bit, a part of bright expression earthed switch is a certain position in centre
;isolating switch condition indication circuit 7 comprises the second light-emitting section, the input of the second light-emitting section is connected with microprocessor 5, the complete bright expression isolating switch of second light-emitting section of isolating switch condition indication circuit 7 is in co-bit, entirely go out and represent that isolating switch is in a point position, a part of bright expression isolating switch is a certain position in centre; First light-emitting section or the second light-emitting section are linear or circular arc, are made up of multiple light-emitting diode come together, the location status of reflection earthed switch and isolating switch.
Earthed switch movement counting circuit 8 and isolating switch movement counting circuit 9 adopt the action frequency of charactron or liquid crystal display screen display earthed switch and isolating switch respectively, to understand the mechanical endurance of earthed switch and isolating switch.
Working state indicating circuit 12 is at normal working position by the 3rd luminous tube instruction earthed switch and isolating switch, or mechanism is stuck in non-normal working position, and the input of the 3rd luminous tube is connected with microprocessor 5.
Switching value output circuit 10 adopts relay tip to export, and the positional information of earthed switch and isolating switch is seen off, and relay contact current/voltage is 1A/125V, and coil voltage is 5-12VDC.
Switching value input circuit 3 adopts low and high level signal to input.
The state indication method of high-tension switch cabinet three station operating mechanism state indicator of the present invention, comprises the following steps:
1) gathered earthed switch and isolating switch location status information by earthed switch displacement transducer, isolating switch displacement transducer, and information is input to microprocessor;
2) microprocessor processes earthed switch and isolating switch location status data, when earthed switch and isolating switch stop more than 30 seconds in centre position, microprocessor exports warning message to working state indicating circuit, 3rd luminous tube flicker of working state indicating circuit 12, the earthed switch relay of Simultaneous Switching amount output circuit 10 or the normal battle of isolating switch relay close, when the make and break contact of switching value input circuit 3 closes alarm releasing, when the make and break contact of switching value input circuit 3 disconnects, Normal Alarm;
3) when isolating switch is by dividing position to co-bit, after putting in place, the isolating switch relay normally closed contact change of switching value output circuit 10 is often opened, and another contact of isolating switch relay becomes normally closed by often opening simultaneously; When isolating switch by co-bit to a point position, after putting in place, the normally closed change of isolating switch relay of switching value output circuit 10 is often opened, and another contact of isolating switch relay becomes normally closed by often opening simultaneously;
4) when earthed switch is by dividing position to co-bit, after putting in place, the earthed switch relay normally closed contact change of switching value output circuit 10 is often left, and another contact of earthed switch relay becomes normally closed by often opening simultaneously; When earthed switch by co-bit to a point position, after putting in place, the earthed switch relay normally closed contact of switching value output circuit 10 becomes and often opens, and another contact of earthed switch relay becomes normally closed by often opening simultaneously.
Also comprise the step of reset: when grounding switch tripping, earthed switch by co-bit to a point position, after earthed switch puts in place, the earthed switch relay contact of switching value output circuit 10 is often left by normally closed change, when the earthed switch relay contact of switching value output circuit 10 breaks down, the external earthed switch relay contact of switching value output circuit 10 that makes is connected by force, the reset switch of key circuit 4 has the button of band self-locking, and key contacts is connected in parallel on the earthed switch relay normally open point two ends of switching value output circuit 10;
To only have after isolating switch is by co-bit to point position earthed switch could action, otherwise only have isolating switch ability action after earthed switch is by co-bit to point position, when earthed switch or isolating switch have one in co-bit time, another switch disable action; If earthed switch or isolating switch both can close any one when point position;
For increase switch put in place after for driving the motor of operating mechanism accurately to brake, fine adjustment function is increased after earthed switch or isolating switch are incorporated into position and point put in place, the earthed switch relay of switching value output circuit 10 or isolating switch relay 4/5 of last turn of operating mechanism drive motors time action and regulate zero point, isolating switch and earthed switch are incorporated into position or divide and put in place, earthed switch relay or the isolating switch actuating of relay point of switching value output circuit 10 individually arrange the fine setting time, the fine setting time is set to ± 150ms, earthed switch or isolating switch two switch are by being incorporated into position and dividing the regulating time put in place also can individually regulate the fine setting time.
Below disclose the present invention with preferred embodiment, so it is not intended to limiting the invention, and all employings are equal to replacement or the technical scheme that obtains of equivalent transformation mode, all drop within protection scope of the present invention.
Claims (3)
1. the state indication method of high-tension switch cabinet three station operating mechanism state indicator, comprises the following steps:
1) gathered earthed switch and isolating switch location status information by earthed switch displacement transducer, isolating switch displacement transducer, and information is input to microprocessor;
2) microprocessor processes earthed switch and isolating switch location status data, when earthed switch and isolating switch stop more than 30 seconds in centre position, microprocessor exports warning message to working state indicating circuit, 3rd luminous tube flicker of working state indicating circuit (12), the earthed switch relay of Simultaneous Switching amount output circuit (10) or the normal battle of isolating switch relay close, when the make and break contact of switching value input circuit (3) closes alarm releasing, when the make and break contact of switching value input circuit (3) disconnects, Normal Alarm,
3) when isolating switch is by dividing position to co-bit, after putting in place, the isolating switch relay normally closed contact change of switching value output circuit (10) is often opened, and another contact of isolating switch relay becomes normally closed by often opening simultaneously; When isolating switch by co-bit to a point position, after putting in place, the isolating switch relay normally closed contact of switching value output circuit (10) becomes and often opens, and another contact of isolating switch relay becomes normally closed by often opening simultaneously;
4) when earthed switch is by dividing position to co-bit, after putting in place, the earthed switch relay normally closed contact change of switching value output circuit (10) is often left, and another contact of earthed switch relay becomes normally closed by often opening simultaneously; When earthed switch by co-bit to a point position, after putting in place, the earthed switch relay normally closed contact of switching value output circuit (10) becomes and often opens, and another contact of earthed switch relay becomes normally closed by often opening simultaneously.
2. the state indication method of high-tension switch cabinet three station operating mechanism state indicator according to claim 1, it is characterized in that, also comprise the step of reset: when grounding switch tripping, earthed switch by co-bit to a point position, after earthed switch puts in place, the earthed switch relay contact of switching value output circuit is often left by normally closed change, when the earthed switch relay contact of switching value output circuit breaks down, the external earthed switch relay contact of switching value output circuit that makes is connected by force, the reset switch of key circuit has the button of band self-locking, key contacts is connected in parallel on the earthed switch relay normally open point two ends of switching value output circuit.
3. the state indication method of high-tension switch cabinet three station operating mechanism state indicator according to claim 1, it is characterized in that, only has earthed switch ability action after isolating switch is by co-bit to point position, otherwise only have isolating switch ability action after earthed switch is by co-bit to point position, when earthed switch or isolating switch have one in co-bit time, another switch disable action; If earthed switch or isolating switch both can close any one when point position.
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| CN201310067093.5A CN103151196B (en) | 2013-03-04 | 2013-03-04 | State indicating instrument of three-working-position operating mechanism of high-voltage switch cabinet and state indicating method thereof |
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| CN201310067093.5A CN103151196B (en) | 2013-03-04 | 2013-03-04 | State indicating instrument of three-working-position operating mechanism of high-voltage switch cabinet and state indicating method thereof |
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| CN103487242A (en) * | 2013-07-10 | 2014-01-01 | 辽宁省电力有限公司阜新供电公司 | Mechanical characteristic on-line monitoring device |
| CN107515108B (en) * | 2017-07-26 | 2019-10-18 | 国网江苏省电力公司南京供电公司 | The mechanical property monitoring device and monitoring method of high voltage isolating switch operating mechanism |
| CN114994527B (en) * | 2022-07-15 | 2022-10-25 | 中国电力科学研究院有限公司 | Grounding closing test device and method for perfluoroisobutyronitrile insulated metal-enclosed switchgear |
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| CN201726203U (en) * | 2010-07-26 | 2011-01-26 | 合肥德盛电器有限责任公司 | Comprehensive mining protection, measurement and control device |
| CN102170171A (en) * | 2011-04-07 | 2011-08-31 | 马剑 | Intelligent safety monitoring system for preventing false operation of high voltage electrical equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3886741B2 (en) * | 2001-06-07 | 2007-02-28 | 三菱電機株式会社 | Power supply system for internal combustion engine controller |
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|---|---|---|---|---|
| CN2863766Y (en) * | 2005-08-18 | 2007-01-31 | 李裕 | Purifier with display device for filter element using state |
| CN201667561U (en) * | 2010-07-16 | 2010-12-08 | 重庆迅驰电气有限公司 | Backup protection monitor device of a power system transformer |
| CN201726203U (en) * | 2010-07-26 | 2011-01-26 | 合肥德盛电器有限责任公司 | Comprehensive mining protection, measurement and control device |
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