CN209432887U - The failure wave-recording for increasing line voltage distribution monitoring channel is based on fault wave recording device - Google Patents
The failure wave-recording for increasing line voltage distribution monitoring channel is based on fault wave recording device Download PDFInfo
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- CN209432887U CN209432887U CN201821923668.3U CN201821923668U CN209432887U CN 209432887 U CN209432887 U CN 209432887U CN 201821923668 U CN201821923668 U CN 201821923668U CN 209432887 U CN209432887 U CN 209432887U
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Abstract
The utility model discloses a kind of failure wave-recordings in increase line voltage distribution monitoring channel to be based on fault wave recording device, belongs to electric power monitoring field.The device includes route protection screen, failure wave-recording screen, line voltage distribution monitoring channel and cable；The route protection screen monitors channel by line voltage distribution of the cable connection into failure wave-recording screen, and line voltage distribution monitoring channel passes through cable connection to failure wave-recording screen again.Route protection screen, failure wave-recording screen, line voltage distribution monitoring channel and cable have several, and correspond respectively.Cable specification is 4 × 2.5mm2.Line voltage distribution is accessed after fault wave recording device just can easily transfer after protection act and concentrates recording and carry out accident analysis by the utility model; the method operation complexity is low; efficiency is greatly improved, immediate data support is provided for accident analysis, is conducive to power network safety operation.
Description
Technical field
The utility model relates to a kind of failure wave-recordings in increase line voltage distribution monitoring channel to be based on fault wave recording device, belong to
Electric power monitoring field.
Background technique
Conventional substation fault wave recording device usually only monitors busbar voltage and the sampling of each spacing current, transformer substation spare power automatic switching
There is the logic of monitoring backup power source and main power supply line voltage distribution in device logic criterion, in line protection reclosure logic criterion
Have monitoring line voltage distribution whether there is or not or the same period logic, prepared auto restart tripping or the route when line failure when substation power loss
When protecting reclosure failure, since the waveform that the action report of protective device printing only includes several cycles can not reflect line comprehensively
Road voltage change overall process, and transfer waveform inside protective device complicated operation, and fault wave recording device is without route
Voltage sample.Therefore, line voltage distribution increases under the missing of wave recording to the analysis of protection exception action behavior in fault set
Difficulty.
Utility model content
In view of this, the purpose of the utility model is to provide a kind of failure wave-recordings in increase line voltage distribution monitoring channel to be based on
Fault wave recording device increases line voltage distribution on fault wave recording device and monitors channel, and line voltage distribution is drawn by secondary cable
To fault wave recording device, solve route protection because line voltage distribution extremely caused by reclosure failure dependent failure waveform transfer it is tired
Difficult problem；Solve the problems, such as prepared auto restart because line voltage distribution extremely caused by tripping dependent failure waveform transfer difficulty.
The purpose of this utility model is achieved through the following technical solutions:
Increase line voltage distribution monitoring channel failure wave-recording be based on fault wave recording device, the device include route protection screen,
Failure wave-recording screen, line voltage distribution monitoring channel and cable；
The route protection screen monitors channel, line voltage distribution prison by line voltage distribution of the cable connection into failure wave-recording screen
It surveys channel and passes through cable connection again to failure wave-recording screen.
Further, the route protection screen, line voltage distribution monitoring channel and cable have several, and correspond respectively.
Further, the cable specification is 4 × 2.5mm2。
Further, the failure wave-recording screen include ac circuit, DC loop, signal delay device, oscillator circuit and
Light oscillograph；
The ac circuit, DC loop and oscillator circuit are electrically connected to signal delay device simultaneously, then with light recording
Device connection.
The beneficial effects of the utility model are: under normal conditions, for the prepared auto restart tripping as caused by line voltage distribution exception
And the analysis of operative action of line protection reclosure tripping, it is transferred inside protective device using corresponding protection producer's special-purpose software
Recording, this not only needs to collect the special-purpose software of each producer, it is also necessary to and it configures different communication wire rods and carries computer, the method
Operation complexity is high, low efficiency.Protective device only acquires the data of several cycles after protection starting simultaneously, at all can not be comprehensively anti-
Line voltage waveform variation overall process is reflected, needs to transfer route opposite side station busbar voltage data indirectly toward contact and analyze and sentence
It is disconnected, at opposite side station without under wave recording device or device bad situation, or even can not judge.Line voltage distribution is accessed failure by the utility model
It just can easily be transferred after protection act after wave recording device and concentrate recording and carry out accident analysis, the method operation complexity
It is low, efficiency is greatly improved, immediate data support is provided for accident analysis, is conducive to power network safety operation.
Other advantages, target and feature of the utility model will be explained in the following description to a certain extent
It states, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or
Person can be instructed from the practice of the utility model.The target of the utility model and other advantages can be said by following
Bright book is achieved and obtained.
Detailed description of the invention
It is practical to this below in conjunction with attached drawing in order to keep the purpose of this utility model, technical solution and advantage clearer
It is novel to be described in further detail, in which:
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is that the line voltage distribution in embodiment monitors channel circuit figure.
Specific embodiment
Hereinafter reference will be made to the drawings, and the preferred embodiment of the utility model is described in detail.It should be appreciated that preferably real
Example is applied only for illustrating the utility model, rather than in order to limit the protection scope of the utility model.
As shown in Figure 1, the failure wave-recording for increasing line voltage distribution monitoring channel is based on fault wave recording device, including route protection
Screen, failure wave-recording screen, line voltage distribution monitoring channel and cable；
The route protection screen monitors channel, line voltage distribution prison by line voltage distribution of the cable connection into failure wave-recording screen
It surveys channel and passes through cable connection again to failure wave-recording screen.
The route protection screen, failure wave-recording screen, line voltage distribution monitoring channel and cable have several, and a pair respectively
It answers.
The cable specification is 4 × 2.5mm2。
The failure wave-recording screen includes ac circuit, DC loop, signal delay device, oscillator circuit and light recording
Device；
The ac circuit, DC loop and oscillator circuit are electrically connected to signal delay device simultaneously, then with light recording
Device connection.
Route protection, which surveys screen, to be filled by the complete route protection of basic configuration of electric current, voltage protection and three_phase reclosing
It sets.
Direction line suitable for 35kV and the non-direct ground system or grounded system via resistance of following voltage class
Protection and observing and controlling, can be installed on the spot in switchgear, can also group screen be installed on control room.
Failure wave-recording screen is a kind of automation equipment being monitored to Operation of Electric Systems situation.System operates normally
When, wave recording device does not start recording, when system jam, starts oscillograph recording rapidly by starter, directly remembers
Record the electrical quantity of the faults device installation place system failure.
As shown in Fig. 2, line voltage distribution monitoring channel is difference channel, V2N pin is connected to the partial pressure of resistor voltage divider circuit
On point, V2P ground connection.
Line voltage distribution monitoring channel sampled signal be by decay line voltage obtain, wherein R11, R13, R475~
R49, R55, R60, R75~R78, R80, R81 are verification attenuation network, can be by sampled signal tune by being shorted wire jumper S5 to S13
It saves in the sampled value of needs, when electric energy meter is fundamental current, voltage sample value is 174.2mV, in order to allow current divider
The error of a reference source 8% in tolerance and piece, decaying verification network should allow at least 30% verification range, and adjustable range is
168.9mV~250mV has fully met the needs adjusted.- 3dB the frequency of this attenuation network is determined by R80 and C33
, R54, R73, R74 ensure this point, even if whole wire jumpers are all connected, the resistance value of R54, R73, R74 are still far longer than
R80.The selection of R80 and C33 will be matched with R57, the C21 in current sample channel, just can guarantee in this way the phase in two channels into
Row matching appropriate, eliminating phase detuning bring error influences.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, should all without departing from the objective and range of the technical program
Cover in the scope of the claims of the utility model.
Claims (4)
1. the failure wave-recording for increasing line voltage distribution monitoring channel is based on fault wave recording device, it is characterised in that: the device includes line
Road protection screen, failure wave-recording screen, line voltage distribution monitoring channel and cable；
The route protection screen monitors channel by line voltage distribution of the cable connection into failure wave-recording screen, and line voltage distribution monitoring is logical
Road passes through cable connection to failure wave-recording screen again.
2. the failure wave-recording according to claim 1 for increasing line voltage distribution monitoring channel is based on fault wave recording device, special
Sign is: the route protection screen, line voltage distribution monitoring channel and cable have several, and correspond respectively.
3. the failure wave-recording according to claim 1 or 2 for increasing line voltage distribution monitoring channel is based on fault wave recording device,
Be characterized in that: the cable specification is 4 × 2.5mm2。
4. the failure wave-recording according to claim 1 or 2 for increasing line voltage distribution monitoring channel is based on fault wave recording device,
Be characterized in that: the failure wave-recording screen includes ac circuit, DC loop, signal delay device, oscillator circuit and light record
Wave device；
The ac circuit, DC loop and oscillator circuit are electrically connected to signal delay device simultaneously, then connect with light oscillograph
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821923668.3U CN209432887U (en) | 2018-11-21 | 2018-11-21 | The failure wave-recording for increasing line voltage distribution monitoring channel is based on fault wave recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821923668.3U CN209432887U (en) | 2018-11-21 | 2018-11-21 | The failure wave-recording for increasing line voltage distribution monitoring channel is based on fault wave recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209432887U true CN209432887U (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821923668.3U Active CN209432887U (en) | 2018-11-21 | 2018-11-21 | The failure wave-recording for increasing line voltage distribution monitoring channel is based on fault wave recording device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484660A (en) * | 2021-05-26 | 2021-10-08 | 贵州电网有限责任公司 | 10kV distribution line single-phase line break and ground crash fault identification method and system based on bus zero sequence voltage information |
-
2018
- 2018-11-21 CN CN201821923668.3U patent/CN209432887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113484660A (en) * | 2021-05-26 | 2021-10-08 | 贵州电网有限责任公司 | 10kV distribution line single-phase line break and ground crash fault identification method and system based on bus zero sequence voltage information |
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