CN204595129U - A kind of split type on-line insulation monitoring equipment - Google Patents
A kind of split type on-line insulation monitoring equipment Download PDFInfo
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- CN204595129U CN204595129U CN201520331271.5U CN201520331271U CN204595129U CN 204595129 U CN204595129 U CN 204595129U CN 201520331271 U CN201520331271 U CN 201520331271U CN 204595129 U CN204595129 U CN 204595129U
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Abstract
The utility model relates to a kind of split type on-line insulation monitoring equipment, comprise insulation monitoring and warning device and main frame, insulation monitoring and warning device comprises sensor, signal processing module, first control module and the first communication module, main frame comprises display module, second control module, second communication module and alarm module, signal processing module carries out filter amplifying processing to the signal that sensor inputs and the signal after process is delivered to the first control module processing, second control module receives signal that each insulation monitoring and warning device uploads and carries out processing and result is carried out showing and regulate and control alarm module at display module and send corresponding alarm signal.In technique scheme, because each insulation monitoring and warning device adopts the means of independent communication, the state of insulation of monitoring position can be reacted to user timely accurately.By the analyzing and processing to data, potential insulation defect can be judged timely, keep in repair in time, protection electric system.
Description
Technical field
The utility model relates to power equipment protection field, is specifically related to a kind of split type on-line insulation monitoring equipment.
Background technology
High voltage electric equipment has very important status in electrical network, if its insulated part defect or deterioration, will affect the safe operation of equipment and electrical network, and insulation fault or accident occur.Therefore, after putting equipment in service, needing regularly has a power failure carries out preventive trial and maintenance, to detect the insulation defect of device interior in time, prevents insulation fault.But along with the increase of net capacity, the sharply increase of high voltage electric equipment, traditional preventive trial and correction maintenance can not meet the requirement of electrical network high reliability.Meanwhile, the insulation degradation due to high voltage electric equipment is the process of a Cumulate Sum development, and preventive trial cannot find potential defect under many circumstances.Therefore, be necessary to realize high voltage electric equipment insulation online, in real time, dynamic monitoring, meet the needs of state-of-the-art facility use and maintenance and production.
Utility model content
The purpose of this utility model is just to provide a kind of split type on-line insulation monitoring equipment, and it can effectively solve the problem, and realizes online, real-time, the dynamic monitoring to high voltage electric equipment insulation.
For achieving the above object, the utility model is implemented by the following technical solutions:
A kind of split type on-line insulation monitoring equipment, it is characterized in that: comprise the insulation monitoring and warning device and the main frame that each phase electric wire are carried out respectively to on-line monitoring, insulation monitoring and warning device comprises the sensor carrying out insulating monitoring, signal processing module, first control module and the first communication module, main frame comprises display module, second control module, second communication module and alarm module, by first between insulation monitoring and warning device and main frame, it is mutual that two communication modules carry out signal, signal processing module carries out filter amplifying processing to the signal that sensor inputs and the signal after process is delivered to the first control module processing, first control module regulates and controls the first communication module and the signal after process is uploaded to main frame, second control module receives signal that each insulation monitoring and warning device uploads and carries out processing and result is carried out showing and regulate and control alarm module at display module and send corresponding alarm signal.
Concrete scheme is: the model of sensor is TWD-WX, and the first control module is that 80C196 series monolithic is formed; Second control module is that MSP430 chip is formed; First and second communication module is respectively MAX232 chip and forms; Main frame is also connected with background server by its inner RS485 communication module arranged; Insulation monitoring and warning device is arranged in hyperbaric chamber, and main frame is arranged on switch cubicle instrument door panel or secondary terminals indoor, and insulation monitoring and warning device is connected by 4 core shielded signal lines with main frame.
In technique scheme, because each insulation monitoring and warning device adopts the means of independent communication, the state of insulation of monitoring position can be reacted to user timely accurately.By the analyzing and processing to data, potential insulation defect can be judged timely, keep in repair in time, protection electric system.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the connection diagram of the second control module and alarm module in main frame;
Fig. 3 be insulation monitoring and warning device install and use schematic diagram;
Fig. 4 is the structural drawing of signal processing module.
Embodiment
In order to make the purpose of this utility model and advantage clearly understand, below in conjunction with embodiment, the utility model is specifically described.Should be appreciated that following word only in order to describe one or more concrete embodiments of the present utility model, considered critical is not carried out to the protection domain that the utility model is specifically asked.
The technical scheme that the utility model is taked is as Fig. 1, shown in 3, a kind of split type on-line insulation monitoring equipment, comprise the insulation monitoring and warning device 10 and the main frame 20 that each phase electric wire are carried out respectively to on-line monitoring, insulation monitoring and warning device 10 comprises the sensor 11 carrying out insulating monitoring, signal processing module 12, first control module 13 and the first communication module 14, main frame 20 comprises display module 23, second control module 21, second communication module 22 and alarm module 24, by first between insulation monitoring and warning device 10 and main frame 20, it is mutual that two communication modules carry out signal, the signal that signal processing module 12 pairs of sensors 11 input carries out filter amplifying processing and the signal after process is delivered to the first control module 13 processing, first control module 13 regulates and controls the first communication module 14 and the signal after process is uploaded to main frame 20, second control module 21 receives signal that each insulation monitoring and warning device 10 uploads and carries out processing and result is carried out showing and regulate and control alarm module 24 at display module and send corresponding alarm signal.Insulation monitoring and warning device 10 is also provided with connection terminal 15.
Signal processing module 12 and the first control module 13 form intellectual monitoring unit, and signal processing module 12 carries out filtering, amplification to sensor 11 output signal, signal adjusted to the scope that applicable first control module 13 processes; First control module 13 be signal is sampled, A/D conversion, data processing, Software Anti-interference, the process such as insulation parameter calculating, and by the first communication module 14, Monitoring Data is sent to main frame 20.The concrete structure of signal processing module 12 as shown in Figure 4, mainly comprises ADC0809 D/A converting circuit and amplifying circuit.First control module 13 adopts high performance 80C196 series monolithic to form, its have low in energy consumption, fast operation, calculation function strong, carry A/D, there is network communication interface and the series of advantages such as antijamming capability is strong.
The performance of on-line monitoring equipment depends on sensor 11 performance quality to a great extent, and be particularly useful for the sensor 11 that capacitance type equipment is measured, its precision and job stability directly affect the accuracy that equipment dielectric loss tangent angle tg δ measures.For guaranteeing sample of signal security in measurement, have employed the current sensor of a circle punching structure.Because the existence of excitation magnetic potential in electromagnetic current transducer is the main cause causing error, therefore only have and adopt the active Zero flux sensor of automatic compensation type, maintenance iron core is operated in the state close to Zero flux, select the permalloy iron core that initial permeability is high, loss is little, the error that minimizing excitation magnetic potential of could trying one's best causes simultaneously.Test findings shows, adopts the small electric current sensor 11 of this principle design can also eliminate the impact of variation of ambient temperature on dielectric loss measurement, its absolute error is less than ± and 0.01 °.Comprehensive above-mentioned experimental analysis, the sensor 11 specifically adopting TWD-WX model in the utility model is implemented, mainly comprise a high-precision Hall current sensor, its principle as shown in Figure 2, point-devicely can be monitored, is analyzed and state of insulation that transmission system is real-time.
Second control module 21 is by the running status of the Control alarm module 24 of AQW214 model, and alarm module 24 comprises alarm lamp, emergency alarm bell and regulates and controls the power supply of circuit breaker trip electric system, as shown in Figure 2.Second control module comprises MSP430 chip and main circuit module 30, main circuit module 30 comprises the signal input part CM+ be connected with the output terminal of monitoring device 10, CM-, signal input part CM+ divides three tunnels to connect precision resistance R1 respectively, one end of R2 and resistance to earth R+, signal input part CM-divides three tunnels to connect precision resistance R3 respectively, one end of R4 and resistance to earth R-, the other end of precision resistance R1 connects one end of relay switch JK1, the other end ground connection of relay switch JK1, the other end of precision resistance R3 connects one end of relay switch JK2, the other end ground connection of relay switch JK2, the other end of precision resistance R2, R4 is connected and is connected with Hall current sensor Dt1, Dt2 between in turn, the other end ground connection of resistance to earth R+, R-, and in the normal situation of system, relay switch Jk1, Jk2 remain closed.When there is insulating ground fault, then resistance to earth R+, R-is generally tending towards infinite, and namely positive and negative busbar insulating resistance declines, and causes curent change herein.One end of output terminal difference contact resistance R1, R2 of Hall current sensor Dt1, Dt2, the other end of resistance R1 is connected with input interface Ad0 on MSP430 chip, input interface Ad1 on one end that the other end of resistance R1 divides three tunnels to connect electric capacity C2 respectively, the positive pole of diode D2, MSP430 chip; The other end of electric capacity C2 connects one end of electric capacity C1 and contact ground connection between the two; The other end of electric capacity C1 connects the positive pole of diode D2, and the negative pole of diode D1, D2 all connects 3.6V voltage source.As shown in Figure 2, Dt1, Dt2 are high-precision hall current sensor, and its output voltage is directly proportional to the difference between current by annular distance, and linear.So the voltage exported in sensor 11 is converted into electric current through main circuit module 30, this current signal is delivered to master chip and processes.First and second communication module that the information that the collection of each sensor 11 is come consists of MAX232 chip carries out data interaction, and main frame 20 is by RS485 communication module and upper PC communication, and whole communication system is efficient, accurate, practical.Second control module 21 is formed for MSP430 chip, when there is insulation fault, by the MSP430 chip controls relay status of main frame 20 inside, thus realizes fault real time alarm function, also passes to background server by RS485 communication simultaneously.Concrete is installed as: insulation monitoring and warning device 10 is arranged in hyperbaric chamber, and main frame 20 is arranged on switch cubicle instrument door panel or secondary terminals indoor, and insulation monitoring and warning device 10 is connected by 4 core shielded signal lines with main frame 20.
LCDs on main frame 20 forms display module 23, carries out corresponding command operating by touching liquid-crystal display screen, relevant information when LCDs display insulator arrangement operation or user operation.
In a word, the split type online insulating detection equipment that the utility model provides, can on-line monitoring high tension apparatus state of insulation, for examine early defect and accident potential, the sudden insulation fault of control, monitoring insulation of electrical installation performance quality effective information is provided, by display screen display equipment under test current operating conditions, when diagnosing out operational outfit fault, pilot lamp, alarm, isolating switch perform corresponding actions, so that plant maintenance personnel understand state of insulation in time and keep in repair.In addition, this device is easy for installation, simple to operate, real-time, monitoring information true and accurate more, can be widely used in 0.4kV ~ 35kV electric system.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; to know in the utility model after contents; under the prerequisite not departing from the utility model principle; can also make some equal conversion to it and substitute, these convert on an equal basis and substitute and also should be considered as belonging to protection domain of the present utility model.
Claims (6)
1. a split type on-line insulation monitoring equipment, it is characterized in that: comprise the insulation monitoring and warning device and the main frame that each phase electric wire are carried out respectively to on-line monitoring, insulation monitoring and warning device comprises the sensor carrying out insulating monitoring, signal processing module, first control module and the first communication module, main frame comprises display module, second control module, second communication module and alarm module, by first between insulation monitoring and warning device and main frame, it is mutual that two communication modules carry out signal, signal processing module carries out filter amplifying processing to the signal that sensor inputs and the signal after process is delivered to the first control module processing, first control module regulates and controls the first communication module and the signal after process is uploaded to main frame, second control module receives signal that each insulation monitoring and warning device uploads and carries out processing and result is carried out showing and regulate and control alarm module at display module and send corresponding alarm signal.
2. split type on-line insulation monitoring equipment according to claim 1, is characterized in that: the model of sensor is TWD-WX, and the first control module is that 80C196 series monolithic is formed.
3. split type on-line insulation monitoring equipment according to claim 1, is characterized in that: the second control module is that MSP430 chip is formed.
4. split type on-line insulation monitoring equipment according to claim 1 or 2 or 3, is characterized in that: first and second communication module is respectively MAX232 chip and forms.
5. split type on-line insulation monitoring equipment according to claim 1 or 2 or 3, is characterized in that: main frame is also connected with background server by its inner RS485 communication module arranged.
6. split type on-line insulation monitoring equipment according to claim 1 or 2 or 3, it is characterized in that: insulation monitoring and warning device is arranged in hyperbaric chamber, main frame is arranged on switch cubicle instrument door panel or secondary terminals indoor, and insulation monitoring and warning device is connected by 4 core shielded signal lines with main frame.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520331271.5U CN204595129U (en) | 2015-05-21 | 2015-05-21 | A kind of split type on-line insulation monitoring equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520331271.5U CN204595129U (en) | 2015-05-21 | 2015-05-21 | A kind of split type on-line insulation monitoring equipment |
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| CN204595129U true CN204595129U (en) | 2015-08-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977484A (en) * | 2015-05-21 | 2015-10-14 | 安徽凯民电力技术有限公司 | Split insulation monitoring equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977484A (en) * | 2015-05-21 | 2015-10-14 | 安徽凯民电力技术有限公司 | Split insulation monitoring equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Split type online insulating monitoring facilities Effective date of registration: 20190104 Granted publication date: 20150826 Pledgee: Hefei SME financing Company limited by guarantee Pledgor: Anhui Kaimin Electric Power Technology Co., Ltd. Registration number: 2019340000017 |