CN206431221U - A kind of high-tension electricity transformer station high-voltage side bus monitoring system - Google Patents
A kind of high-tension electricity transformer station high-voltage side bus monitoring system Download PDFInfo
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- CN206431221U CN206431221U CN201720128353.9U CN201720128353U CN206431221U CN 206431221 U CN206431221 U CN 206431221U CN 201720128353 U CN201720128353 U CN 201720128353U CN 206431221 U CN206431221 U CN 206431221U
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Abstract
The utility model embodiment discloses a kind of high-tension electricity transformer station high-voltage side bus monitoring system, and the system includes：Current transformer, voltage transformer, current/voltage data logger, information controller, message handler, terminal device interface, power supply and monitoring cabinet, wherein, one end of current transformer and voltage transformer is electrically connected with the side of three-winding transformer three respectively, the other end is electrically connected with current/voltage data logger, the output end of current/voltage data logger is electrically connected with the input of information controller, the output end of information controller is electrically connected with the input of message handler, and the output end of message handler is electrically connected with terminal device interface.The utility model is based on Analysis of Indexes of Power Quality and evaluation mechanism, and the running status of high-tension electricity transformer can be monitored in real time, and immediate feedback status information is easy to carry out maintenance and inspection and failture evacuation to transformer.
Description
Technical field
The utility model is related to a kind of monitoring system, more particularly to a kind of high-tension electricity transformer station high-voltage side bus monitoring system.
Background technology
High-tension electricity transformer is power plant and the visual plant of transformer station, and its running directly affects the defeated of electric power
Send, thus it is particularly important to power transformer operational monitoring.Grid operating monitoring is exactly by measuring and analyzing power network after failure
The electrical quantity such as middle electric current, voltage and protection and the switching value change information of breaker actuation, recognize fault element.Good prison
Strategy and malfunction elimination method are surveyed for shortening fault time, prevents fault spread significant.Optimal monitoring refers to
Mark is monitored according to the quality of power supply.
Operational monitoring currently for high-tension electricity transformer is mainly and relies on fault wave recording device, and this device can be in electricity
Force system break down (such as line short, ground connection, and system overvoltage, load unbalanced etc.) when, automatically record electricity
The forward and backward process of Force system failure various electrical quantity (refer mainly to digital quantity, such as magnitude of voltage, current value, frequency, impedance and
Electric capacity etc.) situation of change, by the analysis to these electrical quantity situations of change, compare, determine high-tension electricity transformer
Running situation, so that it is determined that whether high-tension electricity transformer breaks down.
But fault wave recording device is main based on ex-post analysis, lack early warning analysis mechanism, and equipment purchase cost is high,
Data transfer is inconvenient.
In addition, current voltage of power study on monitoring is mainly carried out in terms of vibration, oil temperature, ground voltage, these
Index in high-tension electricity transformer on the quality of power supply influence it is smaller, and for fault traversing electric current, shove, transient overvoltage,
The more important index such as harmonic voltage does not propose systematic monitoring method but.
Utility model content
The utility model embodiment provide a kind of high-tension electricity transformer station high-voltage side bus monitoring system and method, applied to three around
Group transformer, based on Analysis of Indexes of Power Quality, evaluation mechanism, solve in the prior art for fault traversing electric current, shove, temporarily
The important indicators such as state overvoltage, harmonic voltage lack systematic monitoring method, and lack in terms of monitoring information feedback conduit
It is weary effectively, timely transmission means and information data processing, assess and displaying mechanism, it is impossible to the problems such as real time on-line monitoring.
The utility model embodiment provides a kind of high-tension electricity transformer station high-voltage side bus monitoring system, applied to three winding transformation
Device 9, including：
Current transformer 1, voltage transformer 2, current/voltage data logger 3, information controller 4, message handler 5,
Terminal device interface 6, power supply 7 and monitoring cabinet 8, wherein,
One end of the current transformer 1 and the voltage transformer 2 is electrically connected with the side of three-winding transformer 9 three respectively
Connect, the other end is electrically connected with the current/voltage data logger 3, the output end 303 of the current/voltage data logger 3
Electrically connected with the input 405 of described information controller 4, output end 406 and the described information processor of described information controller 4
5 input 501 is electrically connected, and the output end 502 of described information processor 5 is electrically connected with the terminal device interface 6；
The power supply 7 is in parallel with the current/voltage data logger 3, information controller 4 and message handler 5 respectively；
The current transformer 1, voltage transformer 2, current/voltage data logger 3, information controller 4, information processing
Device 5, terminal device interface 6, power supply 7 are arranged in the monitoring cabinet 8.
The high-tension electricity transformer station high-voltage side bus monitoring system that the utility model embodiment is provided can include the following benefits：
In the utility model, the signal acquisition operation collaboration of current transformer and voltage transformer is parallel, becomes while gathering high-tension electricity
The electric current and voltage signal of the side of depressor three, can not only effectively improve running efficiency of system, also contribute to reduce follow-up survey
Error is measured, makes data message more accurate；Current/voltage data logger had both monitored steady-state current/voltage data, and transient state is recorded again
Current/voltage catastrophic event data, and the information monitored is based on power quality index, and high with accuracy, information is detailed
The characteristics of；In information controller, for 4 kinds of fault indices be provided with fault current pass through evaluation module, the evaluation module that shoves,
Fault indices are carried out comprehensive and systematic analysis, meet systematicness by transient overvoltage evaluation module harmonic voltage evaluation module
Demand；Message handler is connected by terminal device interface with terminal device, can realize wired and wireless data transmission, in time
Ground feedback alarm information, is easy to safeguard high-tension electricity transformer, the course of work such as failture evacuation and maintenance and inspection, especially
During being operation at the scene, staff can monitor the running status of high-tension electricity transformer in real time.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation for high-tension electricity transformer station high-voltage side bus monitoring system that the utility model embodiment is provided；
Fig. 2 is a kind of frame diagram for high-tension electricity transformer station high-voltage side bus monitoring system that the utility model embodiment is provided；
Fig. 3 is a kind of flow chart for high-tension electricity transformer station high-voltage side bus monitoring method that the utility model embodiment is provided.
In Fig. 1, symbol is represented：
At 1- current transformers, 2- voltage transformers, 3- current/voltage data loggers, 4- information controllers, 5- information
Manage device, 6- terminal device interfaces, 7- power supplys, 8- monitoring cabinets, 9- transformers, 301- current data capture cards, 302- voltage datas
Capture card, the output end of 303- current/voltage data loggers, 401- fault currents pass through evaluation module, and 402- shoves assessment
Module, 403- transient overvoltage evaluation modules, 404- harmonic voltage evaluation modules, the input of 405- information controllers, 406-
The output end of information controller, the input of 501- message handlers, the output end of 502- message handlers.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the utility model, below in conjunction with this reality
With the accompanying drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that
Described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.Based on the utility model
In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, should all belong to the scope of the utility model protection.
As shown in figure 1, a kind of knot of the high-tension electricity transformer station high-voltage side bus monitoring system provided for the utility model embodiment
Structure schematic diagram, the system includes：Current transformer 1, voltage transformer 2, current/voltage data logger 3, information controller 4,
Message handler 5, terminal device interface 6, power supply 7 and monitoring cabinet 8.
As shown in Fig. 2 a kind of frame of the high-tension electricity transformer station high-voltage side bus monitoring system provided for the utility model embodiment
Frame figure.
One end of current transformer 1 and voltage transformer 2 respectively with the high-pressure side of three-winding transformer 9, medium voltage side and low
Side electrical connection is pressed, for the steady-state current and steady state voltage of the side of cycle regular hour continuous acquisition transformer 9 three, and is being become
When the operation of depressor 9 occurs abnormal, the transient current and transient voltage of transformer 9 are gathered, three groups of signals can effectively less measurement
Error, makes data message more accurate.Current transformer 1 and voltage transformer 2 are by the steady-state current, steady state voltage, transient state of collection
The data information transfer such as electric current and transient voltage is to current/voltage data logger 3.
The other end of current transformer 1 and voltage transformer 2 is electrically connected with current/voltage data logger 3 respectively, electricity
Stream/voltage data recorder 3 includes current data capture card 301 and voltage data capture card 302, current data capture card 301
Electrically connected with current transformer 1, for the steady-state current and transient current of the side of transformer 9 three for gathering current transformer 1
Recorded and arranged；Voltage data capture card 302 is electrically connected with voltage transformer 2, for the change for gathering voltage transformer 2
The steady state voltage and transient voltage of the side of depressor 9 three are recorded and arranged, and current/voltage data logger 3 is by current data
The numbers such as steady-state current, steady state voltage, transient current and transient voltage after capture card 301 and the arrangement of voltage data capture card 302
It is believed that breath passes to information controller by output end 303.
The input 405 of information controller 4 is electrically connected with the output end 303 of current/voltage data logger 3, information control
Device 4 processed includes master control borad and 4 modules being integrated on master control borad, including fault current passes through evaluation module 401, shoves and comment
Estimate module 402, the harmonic voltage evaluation module 404 of transient overvoltage evaluation module 403, wherein,
Fault current passes through evaluation module 401 to be had for receiving the half cycles electric current of the record of current/voltage data logger 3
Valid value is more than 2 times of transformer rated current and voltage effective value is less than the data message of rated voltage 80%, and this data is believed
Maximum faulted phase current instantaneous value in breath does division arithmetic with the rupturing capacity of corresponding breaker, by operation values be positioned at it is high,
In, one in low Three Estate, and generate fault current and pass through evaluation index data message, then fault current is passed through and commented
Estimate marker data information and message handler 5 is passed to by the output end 406 of information controller 4.
The evaluation module 402 that shoves is used to receive the data message that current effective value is mutated by 0, and analyzes this data letter
The variation tendency of 2 subharmonic current containing ratios and 4 subharmonic current containing ratios in being shoved each time in breath, variation tendency is true
It is set to high or low, and generates and shove assessment data message, then will shove assessment output of the data message by information controller 4
End 406 passes to message handler 5.
Transient overvoltage evaluation module 403 is used to receive half cycles voltage effective value is more than transformer rated voltage 1.2
Times data message, the reason for voltage waveform analysis overvoltage in data message, judgement is switching overvoltage or thunder and lightning
Overvoltage, and transient overvoltage assessment data message is generated, transient overvoltage assessment data message is then passed through into information control
The output end 406 of device 4 passes to message handler 5.
Harmonic voltage evaluation module 404 is used for the resultant distortion of harmonic voltage in a measurement period in statistical information
Rate, total harmonic distortion is made comparisons with preset value, determines that total harmonic distortion is height or normal according to comparing, and generate harmonic voltage assessment
Data message, then passes to message handler 5 by harmonic voltage data message by the output end 406 of information controller 4.
The input 501 of message handler 5 is electrically connected with the output end 406 of information controller 4, in addition, message handler 5
Also electrically connected with the switch and warning device in monitoring system, switch the opening and closing for control and monitoring system, alarm dress
Put for sending alarm when message handler 5 receives fault message to remind staff or maintainer.Information processing
Device 5 is used for the assessment data message that modules are transmitted in receive information controller 4, and judges whether according to data message is assessed
Generation alarm, if generation alarm, by warning message by output end 502 and terminal device interface 6 pass to mobile terminal and
The network platform simultaneously generates alarm logging daily record.
Power supply 7 respectively with current/voltage data logger 3, information controller 4 and message handler 5 is in parallel is provided for it
Electric power, current transformer 1, voltage transformer 2, current/voltage data logger 3, information controller 4, message handler 5, end
End equipment interface 6, power supply 7 are arranged in monitoring cabinet 8, are easy to be managed it and safeguard, in addition, monitoring cabinet 8 is additionally provided with
Ground wire, prevents staff or maintainer from electric shock accidents occurring in operation.
In the high-tension electricity transformer station high-voltage side bus monitoring system that the utility model embodiment is provided, current transformer 1 and voltage
The signal acquisition operation collaboration of transformer 2 is parallel, while gathering the electric current and voltage signal of the side of high-tension electricity transformer 9 three, no
Running efficiency of system can be only effectively improved, also contributes to reduce follow-up measurement error, makes data message more accurate；Electricity
Stream/voltage data records 3 instrument and had both monitored steady-state current/voltage data, and transient current/voltage jump event data is recorded again, and
It is high with accuracy and the information monitored is based on power quality index, the characteristics of information is detailed；In information controller 4, pin
4 kinds of fault indices are provided with fault current and passes through evaluation module 401, the evaluation module 402 that shoves, transient overvoltage evaluation module
Fault indices are carried out comprehensive and systematic analysis, meet systemic demand by 403 harmonic voltage evaluation modules 404；Information processing
Device 5 is connected by terminal device interface 6 with terminal device, can realize wired and wireless data transmission, in time feedback alarm
Information, is easy to safeguard high-tension electricity transformer, the course of work such as failture evacuation and maintenance and inspection, especially makees at the scene
During industry, staff can monitor the running status of high-tension electricity transformer 9 in real time.
Corresponding with a kind of high-tension electricity transformer station high-voltage side bus monitoring system that the utility model embodiment is provided, this practicality is new
Type embodiment additionally provides a kind of high-tension electricity transformer station high-voltage side bus monitoring method.
As shown in figure 3, a kind of stream of the high-tension electricity transformer station high-voltage side bus monitoring method provided for the utility model embodiment
Cheng Tu, this method includes：
In step S100, to be not less than time cycle continuous acquisition high voltage side of transformer, medium voltage side and the low-pressure side of 3 minutes
Steady-state current/voltage data, pass through monitoring current/voltage jump amount trigger recording transient current/voltage jump event data
With transient-wave data, wherein, the sample rate of transient current/voltage jump event data is not less than 64 points/cycle.
In step S200, to steady-state current/voltage data, transient current/voltage jump event data and transient-wave number
According to being recorded, arranged and distinguished, wherein, the record of transient-wave data is at least current/voltage and is mutated preceding 10 cycles extremely
The data length of 100 cycles after current/voltage mutation.
The jump-value of current of trigger recording transient current catastrophic event data and transient-wave data is that half cycles electric current has
Valid value is mutated more than 2 times of transformer rated current, current effective values by 0,2 subharmonic current containing ratios or 4 subharmonic are electric
Flow one kind that containing ratio is more than in 1%.
The voltage jump amount of trigger recording transient voltage catastrophic event data and transient-wave data is that half cycle wave voltage has
Valid value be more than 1.2 times of transformer rated voltage, negative sequence voltage containing ratio be more than 4%, voltage effective value less than rated voltage
80%th, harmonic voltage total harmonic distortion is more than one kind in preset value.
Analysis is carried out to steady-state current/voltage data, transient current/voltage jump event data and transient-wave data to sentence
It is disconnected, including to the faulted phase current analysis in data judges, analysis of shoving judges, Over-voltage Analysis judges harmonic voltage analysis
Judge, in step S301, if the half cycles current effective value of record is more than 2 times of transformer rated current and voltage effective value is less than
The 80% of rated voltage, then do division fortune by the maximum faulted phase current instantaneous value of record with the rupturing capacity of corresponding breaker
Calculate, judge the ratio range of maximum faulted phase current instantaneous value and the rupturing capacity of corresponding breaker, if ratio is less than 0.6,
Then it is determined as low；If ratio is between 0.6-0.9, in being determined as；If ratio is more than 0.9, it is determined as height.
In step S302, if current effective value is mutated by 0,2 subharmonic currents in shoving each time are analyzed
The variation tendency of containing ratio and 4 subharmonic current containing ratios, judges the variation tendency of middle harmonic current of shoving, if variation tendency is
Greatly, then it is determined as height；If variation tendency is small, it is determined as low.
In step S303, if half cycles voltage effective value is more than 1.2 times of voltage device rated voltage, according to voltage waveform
The reason for analyzing and judge overvoltage, if voltage waveform is switching overvoltage waveform, is determined as switching overvoltage；If electric
Corrugating is lightning surge waveform, then is determined as lightning surge.
In step S304, with 24 hours for measurement period, the aberration rate of harmonic voltage is monitored, relatively and harmonic wave is judged
Voltage total harmonic distortion and the size of the limit value of GB/T14549-1993 defineds, if harmonic voltage total harmonic distortion is more than defined
Limit value, then be determined as height；If harmonic voltage total harmonic distortion is less than or equal to the limit value of defined, it is determined as normal.
In step S400, above-mentioned judged result is integrated, alarm signal is generated according to the information for having met or exceeded early warning value
Breath, is reminded staff and maintainer by setting warning device to generate alarm.
In step S500, warning message is passed into mobile terminal and the network platform and alarm logging daily record is generated, worked
Personnel and maintainer can be checked by mobile devices such as mobile phone, tablet personal computers to warning message, be easy to transformer
Safeguarded and the course of work such as failture evacuation, especially at the scene operation when, maintainer and staff can be real-time
Monitor the running status of transformer.
Described above is only embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (6)
1. a kind of high-tension electricity transformer station high-voltage side bus monitoring system, applied to three-winding transformer (9), it is characterised in that including：Electricity
Current transformer (1), voltage transformer (2), current/voltage data logger (3), information controller (4), message handler (5),
Terminal device interface (6), power supply (7) and monitoring cabinet (8), wherein,
One end of the current transformer (1) and the voltage transformer (2) is electric with the side of three-winding transformer (9) three respectively
Connection, the other end electrically connects with the current/voltage data logger (3), the current/voltage data logger (3) it is defeated
Go out end (303) to electrically connect with the input (405) of described information controller (4), the output end of described information controller (4)
(406) electrically connected with the input (501) of described information processor (5), the output end (502) of described information processor (5) with
Terminal device interface (6) electrical connection；
The power supply (7) respectively with the current/voltage data logger (3), information controller (4) and message handler (5)
It is in parallel；
The current transformer (1), voltage transformer (2), current/voltage data logger (3), information controller (4), information
Processor (5), terminal device interface (6), power supply (7) are arranged in the monitoring cabinet (8).
2. high-tension electricity transformer station high-voltage side bus monitoring system according to claim 1, it is characterised in that the current/voltage
Data logger (3) includes current data capture card (301) and voltage data capture card (302)；
The current data capture card (301) electrically connects with the current transformer (1), the voltage data capture card (302)
Electrically connected with the voltage transformer (2).
3. high-tension electricity transformer station high-voltage side bus monitoring system according to claim 1, it is characterised in that described information controller
(4) include master control borad and the fault current that is integrated on the master control borad passes through evaluation module (401), shove evaluation module
(402), transient overvoltage evaluation module (403) harmonic voltage evaluation module (404).
4. high-tension electricity transformer station high-voltage side bus monitoring system according to claim 1, it is characterised in that the high-tension electricity becomes
Depressor operation monitoring system also includes warning device；
The warning device is electrically connected with described information processor (5).
5. high-tension electricity transformer station high-voltage side bus monitoring system according to claim 4, it is characterised in that the high-tension electricity becomes
Depressor operation monitoring system also includes switch；
The switch is electrically connected with described information processor (5).
6. high-tension electricity transformer station high-voltage side bus monitoring system according to claim 1, it is characterised in that the monitoring cabinet (8)
It is provided with ground wire.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720128353.9U CN206431221U (en) | 2017-02-13 | 2017-02-13 | A kind of high-tension electricity transformer station high-voltage side bus monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720128353.9U CN206431221U (en) | 2017-02-13 | 2017-02-13 | A kind of high-tension electricity transformer station high-voltage side bus monitoring system |
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| CN206431221U true CN206431221U (en) | 2017-08-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597181A (en) * | 2017-02-13 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Operation monitoring system and method of high-voltage power transformer |
-
2017
- 2017-02-13 CN CN201720128353.9U patent/CN206431221U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597181A (en) * | 2017-02-13 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Operation monitoring system and method of high-voltage power transformer |
| CN106597181B (en) * | 2017-02-13 | 2023-06-02 | 云南电网有限责任公司电力科学研究院 | Operation monitoring system and method for high-voltage power transformer |
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