CN206002594U - A kind of transient overvoltage on-line monitoring system - Google Patents
A kind of transient overvoltage on-line monitoring system Download PDFInfo
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- CN206002594U CN206002594U CN201620731786.9U CN201620731786U CN206002594U CN 206002594 U CN206002594 U CN 206002594U CN 201620731786 U CN201620731786 U CN 201620731786U CN 206002594 U CN206002594 U CN 206002594U
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- voltage
- overvoltage
- line monitoring
- monitoring system
- transient overvoltage
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Abstract
The utility model discloses a kind of transient overvoltage on-line monitoring system, including the high-voltage and current-limitation fuse, high-voltage capacitive divider, wideband voltage sensor, controller, switch and the industrial control computer that are sequentially connected, high-voltage capacitive divider passes through high-voltage and current-limitation fuse hanging net operation, the input connection high voltage bus of high-voltage and current-limitation fuse.This kind of on-line monitoring system can effectively ensure that the signal waveform of collection is undistorted, can distinguish type, the waveform of record preservation overvoltage and the various parameters of all kinds of overvoltage and comprehensive analysis provide solution direction, improve system reliability.
Description
Technical field
The utility model belongs to power system monitoring technical field, more particularly to a kind of transient overvoltage on-line monitoring system
System.
Background technology
Transition effect shows as the status transition stable to another state, it may also be said to be system from a kind of energy
Amount method of salary distribution change turns to another kind of energy method of salary distribution.Hyper-Voltage of Power Systems is that power system is occurred under given conditions
The elevated transition effect of the abnormal voltage more than normal working voltage, for its basic generation root, two can be divided into
Big type, i.e. exterior overvoltage and internal overvoltage.Exterior overvoltage also known as lightning surge or atmospheric over-voltage, its feature
It is：Duration is short, and amplitude is big, and harmfulness is big.Internal overvoltage is that the energy conversion inside power system or transmission cause.
As the energy of internal overvoltage is from electrical network itself, so the power frequency phase voltage of its amplitude and electrical network is substantially directly proportional
Example.
Hyper-Voltage of Power Systems has great shadow to the insulation of power plant, the insulation of Electrical Equipment for Substation and circuit
Ring.Although in practical power systems, the overvoltage protections such as substantial amounts of arrester are mounted with, overvoltage occurs in system
When, due to without monitoring device, it is difficult to which the reason for determining accident is to exceed the endurance of equipment due to Overvoltage Amplitude or steepness,
Or the dielectric level of equipment is low or protection device is problematic, it is also difficult to determine that Past Voltage within Power System is caused still
Due to the damage that exterior overvoltage is caused.
On-line monitoring technique is to develop very rapid technology in recent years, is widely used in power system,
But domestic and international at present developed all kinds of on-line overvoltage monitor single functions, sampling efficiency are low, it is impossible to solve well
Data are preserved and transmission problem, unreliable perfect communication function, are lacked effective real-time monitoring to transient overvoltage and are divided
Analysis method.
Utility model content
The purpose of this utility model, is to provide a kind of transient overvoltage on-line monitoring system, and which can effectively ensure that collection
Signal waveform undistorted, the type of all kinds of overvoltage, record can be distinguished and preserve the waveform of overvoltage and various parameters comprehensive
Analysis provides solution direction, improves system reliability.
In order to reach above-mentioned purpose, solution of the present utility model is：
A kind of transient overvoltage on-line monitoring system, including be sequentially connected high-voltage and current-limitation fuse, high-voltage capacitance partial pressure
Device, wideband voltage sensor, controller, switch and industrial control computer, high-voltage capacitive divider are molten by high-voltage and current-limitation
Disconnected device hanging net operation, the input connection high voltage bus of high-voltage and current-limitation fuse.
The CPU of controller noted above adopts 2.0 G Intel＆DSP double-core processing units.
Above-mentioned switch adopts industrial ethernet switch.
After such scheme, the utility model, being capable of sidepiece of protection system by arranging high-voltage and current-limitation fuse
Point, wideband voltage sensor can the various power frequencies of accurate measurements system and high frequency overvoltage, the signal waveform of collection is effectively ensured
Undistorted.The utility model has picking rate, very high sampling precision, shorter response time, real-time monitoring etc. faster
Feature, can distinguish type, the waveform of record preservation overvoltage and the various parameters of all kinds of overvoltage and comprehensive analysis provide solution
Direction, improves system reliability.
Description of the drawings
Fig. 1 is system construction drawing of the present utility model；
Fig. 2 is system principle schematic diagram of the present utility model.
Specific embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is described in detail.
As shown in figure 1, the utility model provides a kind of transient overvoltage on-line monitoring system, including the high pressure being sequentially connected
Limiting fuse, high-voltage capacitive divider, wideband voltage sensor, controller, switch and industrial control computer, divide below
Do not introduce.
The input connection high voltage bus of the high-voltage and current-limitation fuse, output end connection high-voltage capacitive divider protection system
The primary side part of system.
The high-voltage capacitive divider passes through high-voltage and current-limitation fuse hanging net operation, busbar voltage is carried out partial pressure, is passed through
Coaxial cable is by low-voltage arm signal transmission to wideband voltage sensor.
A width of 0Hz～the 100MHz of the band of the wideband voltage sensor, in high precision, nothing saturation；Being capable of accurate detecting system
In various power frequencies and high frequency overvoltage, be effectively ensured collection signal waveform undistorted；And can be for a long time in system highest work electricity
Pressure safe operation.
The controller adopts 20M high-speed sampling card（Pci interface）50ns A/D conversion is carried out to sampled signal, it is ensured that adopted
Sample accurate data, CPU are implemented to calculate, are analyzed and processed using 2.0 G Intel＆DSP double-core processing unit technology, and embedded TI is public
The DSP of department is monitored each other, it is ensured that the reliability of system.Wherein, the data acquisition of sampling card thread complete independently, syndrome check, record
Ripple starts, fault data is preserved.
The switch is industrial ethernet switch, for the communication between system and transmission data, by distal end work
Industry control computer control system is run, and also (GPRS/GSM) collection in worksite data can be delivered to operational management portion at a distance
Door.
The industrial control computer is the online prison for realizing transient overvoltage based on Windows NT operating system platform
Survey, system provides the high-speed synchronous measurement of four passages, can be while each phase transient state of monitoring system bus, transient overvoltage waveform
Data, automatic data collection record each overvoltage event, and are stored to hard disk automatically, successively write into Databasce, comprising waveform, record
The data such as time.
Above example is only and technological thought of the present utility model is described, it is impossible to limit protection model of the present utility model with this
Enclose, every according to the utility model proposes technological thought, any change that is done on the basis of technical scheme, each fall within this reality
Within the scope of novel protected.
Claims (3)
1. a kind of transient overvoltage on-line monitoring system, it is characterised in that：Including be sequentially connected high-voltage and current-limitation fuse, high pressure
Capacitive divider, wideband voltage sensor, controller, switch and industrial control computer, high-voltage capacitive divider is by height
Pressure limiting fuse hanging net operation, busbar voltage is carried out partial pressure, by low-voltage arm signal transmission to wideband voltage sensor；High pressure
The input connection high voltage bus of limiting fuse.
2. a kind of transient overvoltage on-line monitoring system as claimed in claim 1, it is characterised in that：The CPU of the controller is adopted
With 2.0 G Intel＆DSP double-core processing units.
3. a kind of transient overvoltage on-line monitoring system as claimed in claim 1, it is characterised in that：The switch is using industry
Ethernet switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620731786.9U CN206002594U (en) | 2016-07-12 | 2016-07-12 | A kind of transient overvoltage on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620731786.9U CN206002594U (en) | 2016-07-12 | 2016-07-12 | A kind of transient overvoltage on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206002594U true CN206002594U (en) | 2017-03-08 |
Family
ID=58201850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620731786.9U Expired - Fee Related CN206002594U (en) | 2016-07-12 | 2016-07-12 | A kind of transient overvoltage on-line monitoring system |
Country Status (1)
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| CN (1) | CN206002594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856443A (en) * | 2018-12-21 | 2019-06-07 | 云南电网有限责任公司西双版纳供电局 | A kind of higher harmonic voltage test macro |
| CN113960355A (en) * | 2021-10-21 | 2022-01-21 | 国网江苏省电力有限公司电力科学研究院 | Broadband voltage monitoring device based on non-contact sensor |
-
2016
- 2016-07-12 CN CN201620731786.9U patent/CN206002594U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109856443A (en) * | 2018-12-21 | 2019-06-07 | 云南电网有限责任公司西双版纳供电局 | A kind of higher harmonic voltage test macro |
| CN113960355A (en) * | 2021-10-21 | 2022-01-21 | 国网江苏省电力有限公司电力科学研究院 | Broadband voltage monitoring device based on non-contact sensor |
| CN113960355B (en) * | 2021-10-21 | 2024-05-17 | 国网江苏省电力有限公司电力科学研究院 | Broadband voltage monitoring device based on non-contact sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170308 Termination date: 20190712 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |