CN103219799B - Intelligent control device for power transformer - Google Patents
Intelligent control device for power transformer Download PDFInfo
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- CN103219799B CN103219799B CN201310107152.7A CN201310107152A CN103219799B CN 103219799 B CN103219799 B CN 103219799B CN 201310107152 A CN201310107152 A CN 201310107152A CN 103219799 B CN103219799 B CN 103219799B
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Abstract
The invention discloses a kind of intelligent control device for power transformer, comprise transformer and several contactors of being connected corresponding to transformer output lines respectively, described contactor is connected with intelligent management and control instrument, described intelligent management and control instrument has a housing, in described housing, main control board is set, drive circuit, LCD liquid crystal display and control panel, described main control board by signal transmssion line respectively with drive circuit, LCD liquid crystal display is connected with control panel, the signal input part of described main control board is connected with mechanism for monitoring, the power circuit of described drive circuit and described contactor coil is connected in series.The present invention can prevent electric leakage Real-Time Monitoring and control transformer temperature and load, there is individual branc circuit, energy-conserving and environment-protective, the harmful effect that avoiding has a power failure on a large scale causes, can the situation such as, overcurrent too high to transformer temperature, electric leakage take the measure of power-off load down thus ensure that the safe and stable operation of electrical network in time.
Description
Technical field
The present invention relates to power equipment monitoring management technical field, particularly relate to a kind of intelligent control device for power transformer.
Background technology
Current, in the construction of County Power Grid, that not only wants corollary system complexity to main transformer keeps an eye on Operation and Maintenance Architectural Equipment and fairly large Staff of Employees, and a station power distribution transformer is often set will relative set controller switching equipment and attendant on duty.Thus, bring a large amount of manpower and materials drop into and take, if at remote mountain area inclement condition, operator on duty's condition of work of accrediting is also quite arduous; Secondly, if there is the situations such as electric leakage, short circuit at a certain node of electrical network, under existing technical conditions, the transformer certainly will will closing down this region overhauls, and causes large-area power-cuts, causes damage to the production of relevant regional people and life; Its three, the supporting controller switching equipment observable index of transformer is comparatively large, is unfavorable for the needs of present energy-saving and emission-reduction; Its four, the temperature of transformer and load are proportional, need manually to carry out in prior art to the monitoring of transformer temperature and load, if personnel slightly neglect, can not take measures in time, cause transformer damage, cause damage to the property of the country and people; Its five, community's transformer is little due to its load, is often independently arranged on the electric pole in roadside, does not have special distribution personnel to manage, if automatically can not will burn transformer by load down period in peak of power consumption.Application number: the utility model of 201120544990.7 relates to a kind of equipment for power transmission and distribution, especially relates to a kind of intelligent power transformer.This transformer is made up of casing assembly, inner device body and electronic circuit, casing assembly includes fuel tank, the case lid of fuel tank is provided with conservator, three the high voltage control porcelain vases be electrically connected to each other, three high input voltage porcelain vases and the control cabinets with low pressure delivery outlet, between fuel tank and control cabinet, is provided with the penetration pipe for wearing high input voltage control line and low-voltage output cord.Above technical scheme only needs to coordinate the inner core of intelligent power transformer design can reduce the idle of transformer and wastes and line loss, can not meet the demand of power network safety operation.
Summary of the invention
The invention provides one and can prevent electric leakage, Real-Time Monitoring and control transformer temperature and load, have individual branc circuit, the intelligent control device for power transformer of energy-conserving and environment-protective.
Realizing the technical scheme that above-mentioned purpose takes is: a kind of intelligent control device for power transformer, comprise transformer and several contactors of being connected corresponding to transformer output lines respectively, described contactor is connected with intelligent management and control instrument, described intelligent management and control instrument has a housing, in described housing, main control board is set, drive circuit, LCD liquid crystal display and control panel, described main control board by signal transmssion line respectively with drive circuit, LCD liquid crystal display is connected with control panel, the signal input part of described main control board is connected with mechanism for monitoring, the power circuit of described drive circuit and described contactor coil is connected in series.
Described mechanism for monitoring comprises current sensor, leakage current detect transducer, temperature sensor, described current sensor is connected with the three-phase outlet line of described transformer, described leakage current detect transducer is connected with the distribution line of described transformer, and described temperature sensor is connected with described transformer case.
Described main control board adopts micro-chip processor.
Described drive circuit is by half-wave rectifying circuit, full-wave rectifying circuit and driving executive circuit composition, described half-wave rectifying circuit and full-wave rectifying circuit are connected in parallel, described half-wave rectifying circuit and full-wave rectifying circuit are connected in series with driving executive circuit respectively, and form 12V control loop and 220V control loop respectively, described half-wave rectifying circuit is made up of parallel with one another 2 diodes, described full-wave rectifying circuit is formed in parallel by two rectifying circuits, every bar rectifying circuit arranges 2 diodes of series connection mutually, wherein said rectifying circuit is parallel with low-voltage rectifier, described driving executive circuit is composed in parallel by several control circuits, described control circuit arranges 12V relay parallel with one another, 220V relay and blocking diode.
Described control panel arranges function button, adjustment button and confirms button.
The invention has the beneficial effects as follows: transformer output lines correspondence is connected with several contactors, contactor has respectively independently powers along separate routes, when there is the situations such as electric leakage, short circuit when grid nodes, only need to close down a wherein power supply and just can overhaul, without the need to having a power failure on a large scale along separate routes; Whether described micro-chip processor can possess by self-inspection trip avoidance function, electrical leakage can be set, over current value can be set, can inquire about the electric leakage time, electrical leakage, pressure duration of load application, pressure load time electric current and temperature, the interval time that multiple circuit delivers electricity can be set, the self-inspection time after open-circuit line that can set, to determine whether to need to disconnect All other routes, recovers the time interval delivering electricity after can setting pressure load, can set blower fan temperature and pressure load temperature; Current sensor and temperature sensor can the load condition of Real-Time Monitoring transformer and temperature conditionss, if electric current and temperature reach set point simultaneously, signal is reached executive circuit by micro-chip processor, automatically a certain road contactor is disconnected according to the priority preset, until load restoration normally the automatic principle according to " disconnecting afterwards; first deliver " close contactor, the electric power thus supplied of the public sector that school, post office etc. are important can be ensured, reduce the unnecessary impact that causes of having a power failure; Leakage current detect transducer can monitor the drain conditions of transformer in real time, if there is electric leakage, the signal that leakage current detect transducer produces reaches actuator by microprocessor, automatic disconnection a certain road contactor, until recover normal closed contactor automatically after maintenance, if there is grounding phenomenon, continue locking off-state, until maintainer fixes a breakdown manually deliver electricity; Described drive circuit can after big current starting contactor, and small area analysis maintains the operating state of contactor thus reduces the power consumption of contactor, is reduced to 1W by original power consumption 152W.The present invention can prevent electric leakage Real-Time Monitoring and control transformer temperature and load, there is individual branc circuit, energy-conserving and environment-protective, the harmful effect that avoiding has a power failure on a large scale causes, can the situation such as, overcurrent too high to transformer temperature, electric leakage take the measure of power-off load down thus ensure that the safe and stable operation of electrical network in time.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the connection diagram of transformer and attached device thereof.
Fig. 2 is the schematic diagram of intelligent management and control instrument.
Fig. 3 is the schematic diagram of drive circuit.
Embodiment
As Fig. 1, shown in Fig. 2, a kind of intelligent control device for power transformer, comprise transformer 12 and 1 ~ 3 contactor 20 being connected corresponding to transformer 12 outlet line respectively, described contactor 20 is connected with intelligent management and control instrument 10, described intelligent management and control instrument 10 has a housing 11, in described housing 11, main control board 21 is set, drive circuit 15, LCD liquid crystal display 13 and control panel 14, described main control board 21 by signal transmssion line respectively with drive circuit 15, LCD liquid crystal display 13 is connected with control panel 14, the signal input part of described main control board 21 is connected with mechanism for monitoring, the signal of mechanism for monitoring inputs main control board 21 by terminal board 16, described drive circuit 15 is connected by the coil of signal transmission line with described contactor 20, the output signal of drive circuit 15 inputs contactor 20 by terminal board 16.Described mechanism for monitoring comprises current sensor 19, leakage current detect transducer 17, temperature sensor 18, described current sensor 19 is connected with the three-phase copper bar of described transformer 12, described leakage current detect transducer 17 is connected with described transformer 12 outlet line, and described temperature sensor 18 is connected with described transformer 12 shell.Described main control board 21 adopts micro-chip processor.Described control panel 14 arranges function button, adjustment button and confirms button.
As shown in Figure 3: described drive circuit is by half-wave rectifying circuit, full-wave rectifying circuit and driving executive circuit composition, described half-wave rectifying circuit and full-wave rectifying circuit are connected in parallel, described half-wave rectifying circuit and full-wave rectifying circuit are connected in series with driving executive circuit respectively, and form 12V control loop and 220V control loop respectively, described half-wave rectifying circuit is made up of parallel with one another 2 diodes, described full-wave rectifying circuit is formed in parallel by two rectifying circuits, every bar rectifying circuit arranges 2 diodes of series connection mutually, wherein said rectifying circuit is parallel with low-voltage rectifier, described driving executive circuit is composed in parallel by several control circuits, described control circuit arranges 12V relay parallel with one another, 220V relay and blocking diode.220V power supply is inputted by J19, through D2, be connected in series with relay K 1 after D3 does halfwave rectifier and form big current start-up circuit, 12V alternating current is inputted by J18, through D4, D5, D6, D7 full-wave rectification is be connected in series with relay R LY2 after pulse direct current to form small area analysis holding circuit, big current start-up circuit is connected with the coil of described contactor J1 with after the parallel connection of small area analysis holding circuit, described small area analysis holding circuit arranges blocking diode D8, when needs contactor J1 starts, K1, RLY2 closes simultaneously, the pulse direct current of 220V is exported by J1-2 and CON_COM, contactor J1 is started, after micro-chip processor time delay, allow K1 disconnect thus make contactor J1 maintain running status by the pulse direct current of 12V.When needing to stop, disconnecting RLY2 by micro-chip processor, contactor J1 stops.Contactor J2, J3 run with contactor J1.This drive circuit can after big current starting contactor, and small area analysis maintains the operating state of contactor thus reduces the power consumption of contactor, is reduced to 1W, greatly saves the energy by original power consumption 152W.
Micro-chip processor respectively with drive circuit, leakage current detect transducer, temperature sensor, current sensor, I/O circuit connects, whether described micro-chip processor can possess by self-inspection trip avoidance function, described micro-chip processor can set electrical leakage, described micro-chip processor can set over current value, described micro-chip processor can inquire about the electric leakage time, electrical leakage, pressure duration of load application, electric current during pressure load and temperature, described micro-chip processor can set the interval time that multiple circuit delivers electricity, the self-inspection time after described micro-chip processor can set open-circuit line is to determine whether to need to disconnect All other routes, described micro-chip processor recovers the time interval delivering electricity after can setting pressure load, described micro-chip processor can set the priority of open-circuit line, described micro-chip processor can according to " disconnecting afterwards after current reverts is normal, first deliver " principle automatically deliver power supply, described micro-chip processor can set blower fan temperature and pressure load temperature, described micro-chip processor can lock open-circuit line when electric leakage state is not removed, the manual release power transmission until maintainer fixes a breakdown.
The invention has the beneficial effects as follows: several contactors that transformer output lines correspondence connects, contactor has respectively independently powers along separate routes, when there is the situations such as electric leakage, short circuit when grid nodes, only need to close down a wherein power supply and just can overhaul, without the need to having a power failure on a large scale along separate routes; Whether described micro-chip processor can possess by self-inspection trip avoidance function, electrical leakage can be set, over current value can be set, can inquire about the electric leakage time, electrical leakage, pressure duration of load application, pressure load time electric current and temperature, the interval time that multiple circuit delivers electricity can be set, the self-inspection time after open-circuit line that can set, to determine whether to need to disconnect All other routes, recovers the time interval delivering electricity after can setting pressure load, can set blower fan temperature and pressure load temperature; Current sensor and temperature sensor can the load condition of Real-Time Monitoring transformer and temperature conditionss, if electric current and temperature reach set point simultaneously, signal is reached executive circuit by micro-chip processor, automatically a certain road contactor is disconnected according to the priority preset, until load restoration normally the automatic principle according to " disconnecting afterwards; first deliver " close contactor, the electric power thus supplied of the public sector that school, post office etc. are important can be ensured, reduce the unnecessary impact that causes of having a power failure; Leakage current detect transducer can monitor the drain conditions of transformer in real time, if there is electric leakage, the signal that leakage current detect transducer produces reaches actuator by microprocessor, automatic disconnection a certain road contactor, until recover normal closed contactor automatically after maintenance, if there is grounding phenomenon, continue locking off-state, until maintainer fixes a breakdown manually deliver electricity; Described drive circuit can after big current starting contactor, and small area analysis maintains the operating state of contactor thus reduces the power consumption of contactor, is reduced to 1W by original power consumption 152W.The present invention can prevent electric leakage Real-Time Monitoring and control transformer temperature and load, there is individual branc circuit, energy-conserving and environment-protective, the harmful effect that avoiding has a power failure on a large scale causes, can the situation such as, overcurrent too high to transformer temperature, electric leakage take the measure of power-off load down thus ensure that the safe and stable operation of electrical network in time.
The figure of above-mentioned expression, explanation, be only embodiments of the invention, is not to limit protection scope of the present invention, and all equivalent variations of doing according to the claims in the present invention or modification, be the claims in the present invention and contain.
Claims (3)
1. an intelligent control device for power transformer, it is characterized in that: comprise transformer and several contactors of being connected corresponding to transformer output lines respectively, described contactor is connected with intelligent management and control instrument, described intelligent management and control instrument has a housing, in described housing, main control board is set, drive circuit, LCD liquid crystal display and control panel, described main control board by signal transmssion line respectively with drive circuit, LCD liquid crystal display is connected with control panel, the signal input part of described main control board is connected with mechanism for monitoring, the power circuit of the coil of described drive circuit and described contactor is connected in series, described drive circuit is by half-wave rectifying circuit, full-wave rectifying circuit and driving executive circuit composition, described half-wave rectifying circuit and full-wave rectifying circuit are connected in parallel, described half-wave rectifying circuit and full-wave rectifying circuit are connected in series with driving executive circuit respectively, and form 12V control loop and 220V control loop respectively, described half-wave rectifying circuit is made up of parallel with one another 2 diodes, described full-wave rectifying circuit is formed in parallel by two rectifying circuits, every bar rectifying circuit arranges 2 diodes of series connection mutually, wherein said rectifying circuit is parallel with low-voltage rectifier, described driving executive circuit is composed in parallel by several control circuits, described control circuit arranges 12V relay parallel with one another, 220V relay and blocking diode, described main control board adopts micro-chip processor.
2. a kind of intelligent control device for power transformer as claimed in claim 1, it is characterized in that: described mechanism for monitoring comprises current sensor, leakage current detect transducer, temperature sensor, described current sensor is connected with the three-phase outlet line of described transformer, described leakage current detect transducer is connected with the distribution line of described transformer, and described temperature sensor is connected with described transformer case.
3. a kind of intelligent control device for power transformer as claimed in claim 1, is characterized in that: described control panel arranges function button, adjustment button and confirms button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310107152.7A CN103219799B (en) | 2013-03-29 | 2013-03-29 | Intelligent control device for power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310107152.7A CN103219799B (en) | 2013-03-29 | 2013-03-29 | Intelligent control device for power transformer |
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| Publication Number | Publication Date |
|---|---|
| CN103219799A CN103219799A (en) | 2013-07-24 |
| CN103219799B true CN103219799B (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310107152.7A Expired - Fee Related CN103219799B (en) | 2013-03-29 | 2013-03-29 | Intelligent control device for power transformer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377825B (en) * | 2014-11-19 | 2016-08-17 | 国网河南省电力公司平顶山供电公司 | A kind of power distribution network intelligent transformer protection controls device and guard method |
| CN105006823A (en) * | 2015-08-03 | 2015-10-28 | 孙鸿昌 | Industrial intelligent detection circuit control system |
| CN105137876A (en) * | 2015-08-25 | 2015-12-09 | 孙鸿昌 | Industrial intelligent detection circuit control system |
| CN112735789A (en) * | 2021-01-31 | 2021-04-30 | 江苏电子信息职业学院 | High-voltage transformer electronic protection equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201204110Y (en) * | 2008-03-24 | 2009-03-04 | 上海梅山钢铁股份有限公司 | DC coil energy-saving control circuit |
| CN201466692U (en) * | 2009-07-10 | 2010-05-12 | 中达电通股份有限公司 | Low voltage protection circuit for AC contactor |
| CN102981084A (en) * | 2012-12-07 | 2013-03-20 | 深圳市双合电气股份有限公司 | Comprehensive monitoring system for electric power system transformers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002345175A (en) * | 2001-05-14 | 2002-11-29 | Toko Seiki Co Ltd | Monitor and control method and system for power transmission line |
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2013
- 2013-03-29 CN CN201310107152.7A patent/CN103219799B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201204110Y (en) * | 2008-03-24 | 2009-03-04 | 上海梅山钢铁股份有限公司 | DC coil energy-saving control circuit |
| CN201466692U (en) * | 2009-07-10 | 2010-05-12 | 中达电通股份有限公司 | Low voltage protection circuit for AC contactor |
| CN102981084A (en) * | 2012-12-07 | 2013-03-20 | 深圳市双合电气股份有限公司 | Comprehensive monitoring system for electric power system transformers |
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| CN103219799A (en) | 2013-07-24 |
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Granted publication date: 20151014 Termination date: 20160329 |