CN203149025U - Transient overvoltage monitoring system - Google Patents
Transient overvoltage monitoring system Download PDFInfo
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- CN203149025U CN203149025U CN 201320154731 CN201320154731U CN203149025U CN 203149025 U CN203149025 U CN 203149025U CN 201320154731 CN201320154731 CN 201320154731 CN 201320154731 U CN201320154731 U CN 201320154731U CN 203149025 U CN203149025 U CN 203149025U
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- monitoring system
- overvoltage
- attenuator
- transient overvoltage
- data collecting
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Abstract
The utility model discloses a transient overvoltage monitoring system, which is externally connected to bus, and comprises a high-voltage pulse divider, an attenuator, a preposition signal processing circuit, a data collection card and a computer, wherein, the high-voltage pulse divider, the attenuator, the preposition signal processing circuit and the computer are connected in order; and the high-voltage pulse divider is connected to the bus and is connected to ground. The transient overvoltage monitoring system can give consideration to inner overvoltage and outer overvoltage, the monitoring of the inner overvoltage and outer overvoltage can be realized, and the transient overvoltage monitoring system has advantages of short response time, fast acquisition speed and high sampling precision.
Description
Technical field
The utility model relates to a kind of transient overvoltage monitoring system.
Background technology
Transition effect shows as from a stable status excessively to the another one state, and the system that also can be described as is changed to another kind of energy distribution mode from a kind of energy distribution mode.In electric system, topmostly cause that the disturbance of transition effect is switching circuit breaker or switchgear, short circuit, earth fault or a thunderbolt.Hyper-Voltage of Power Systems is the transition effect that the abnormal voltage that surpasses normal working voltage that electric system occurs under given conditions raises, and with regard to its basic generation root, can be divided into two major types, i.e. exterior overvoltage and internal overvoltage.
Exterior overvoltage claims lightning surge or atmospheric over-voltage again, and its duration is extremely short, and between 50～80 μ s, the amplitude of maximum lightning current reaches more than the 200kA, has the characteristic of pulse, is called lightning surge.Lightning surge is because thundercloud discharge causes the undesired rising of line voltage.The characteristics of lightning surge are: the duration is short, and amplitude is big, and harmfulness is big.
Internal overvoltage is to be transformed or transmitted by the energy of electric system inside to cause.Because the energy of internal overvoltage is from electrical network itself, so the power frequency phase voltage of its amplitude and electrical network is in direct ratio basically, usually the ratio of the amplitude of internal overvoltage and the maximum operation in this place of electrical network phase voltage amplitude is called the internal overvoltage multiple, to characterize the height of internal overvoltage.
The generation of Hyper-Voltage of Power Systems is at random, and inside and outside superpotential has different characteristics: the internal overvoltage frequency spectrum is very wide, usually from tens hertz to several KHz, the exterior overvoltage wave head is steeper, amplitude is very high.Existing transient overvoltage monitoring system can not be taken into account inside and outside superpotential collection, and has such as shortcomings such as data acquisition rate are low, frequency response is slow, lack the mass data storage function, sampling precision is low, does not satisfy the requirement of prior art.
Summary of the invention
The purpose of this utility model is to provide a kind of transient overvoltage monitoring system, can take into account inside and outside superpotential collection, realizes inside and outside superpotential monitoring, and has short response time, picking rate and very high sampling precision faster.
The technical scheme that realizes above-mentioned purpose is:
A kind of transient overvoltage monitoring system, external bus comprises high-voltage pulse voltage divider, attenuator, advance signal treatment circuit, data collecting card and computing machine, wherein:
Described high-voltage pulse voltage divider, attenuator, advance signal treatment circuit, data collecting card are connected successively with computing machine;
Described high-voltage pulse voltage divider connection bus and ground connection.
In above-mentioned transient overvoltage monitoring system, described advance signal treatment circuit comprises wave filter, operational amplifier, A/D(mould/number) converter and microprocessor, wherein:
Described wave filter, operational amplifier and A/D converter are connected successively;
Described wave filter connects described attenuator;
Described A/D converter connects described data collecting card;
Described microprocessor connects described operational amplifier.
In above-mentioned transient overvoltage monitoring system, pass through PCI(Peripheral Component Interconnect, Peripheral Component Interconnect standard between described data collecting card and the computing machine) the bus connection.
The beneficial effects of the utility model are: the utility model is by the configuration of high-voltage pulse voltage divider and data collecting card, has short response time and picking rate faster, can take into account inside and outside superpotential collection, realizes inside and outside superpotential monitoring.And the utility model is simple in structure, be easy to realize, homemade advance signal treatment circuit can realize that the amplification of signal regulates, thereby makes and the utlity model has very high sampling precision.
Description of drawings
Fig. 1 is the structural representation of transient overvoltage monitoring system of the present utility model;
Fig. 2 is the structural drawing of advance signal treatment circuit in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
See also Fig. 1, transient overvoltage monitoring system of the present utility model, external bus (A, B, C) comprises high-voltage pulse voltage divider 1, attenuator 2, advance signal treatment circuit 3, data collecting card 4 and computing machine 5, wherein:
High-voltage pulse voltage divider 1, attenuator 2, advance signal treatment circuit 3, data collecting card 4 and computing machine 5 are connected successively; Wherein, connect by pci bus 6 between data collecting card 4 and the computing machine 5;
High-voltage pulse voltage divider 1 connection bus and ground connection, high-voltage pulse voltage divider 1 obtains voltage signal, this voltage signal passes through attenuator 2 and advance signal treatment circuit 3 successively, after being adjusted to the level that is suitable for data collecting card 4 receptions, convert digital signal to and enter data collecting card 4, enter computing machine 5 through pci bus 6 then, handled by computing machine 5, comprise that waveform shows in real time, data storage and analysis, over-voltage waveform " reproduction ", calculation of parameter, time domain and frequency-domain analysis etc.;
See also Fig. 2, advance signal treatment circuit 3 comprises wave filter 31, operational amplifier 32, A/D converter 33 and microprocessor 34, and wave filter 31, operational amplifier 32 and A/D converter 33 are connected successively; Wave filter 31 connects attenuator 2, to carrying out filtering through the signal after attenuator 2 decay; A/D converter 33 connects data collecting card 4; Microprocessor 34 concatenation operation amplifiers 32, the enlargement factor that microprocessor 34 is regulated operational amplifier 32 makes to be suitable for the level that data collecting card 4 receives; A/D converter 33 realizes with analog signal conversion being the function of digital signal.
In the present embodiment, the model that high-voltage pulse voltage divider 1 is selected for use is HRHG_CR; The model that attenuator 2 is selected for use is RY.03-AV; The model that data collecting card 4 is selected for use is the PCI-9112 data collecting card that PEM10412 or Beijing peace step science and technology; The model that microprocessor 34 is selected for use is S3F84K4-DH94; Described bus is high voltage bus.
Above embodiment is only for the usefulness that the utility model is described, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present utility model, should be limited by each claim.
Claims (3)
1. transient overvoltage monitoring system, external bus is characterized in that, comprises high-voltage pulse voltage divider, attenuator, advance signal treatment circuit, data collecting card and computing machine, wherein:
Described high-voltage pulse voltage divider, attenuator, advance signal treatment circuit, data collecting card are connected successively with computing machine;
Described high-voltage pulse voltage divider connection bus and ground connection.
2. transient overvoltage monitoring system according to claim 1 is characterized in that, described advance signal treatment circuit comprises wave filter, operational amplifier, A/D converter and microprocessor, wherein:
Described wave filter, operational amplifier and A/D converter are connected successively;
Described wave filter connects described attenuator;
Described A/D converter connects described data collecting card;
Described microprocessor connects described operational amplifier.
3. transient overvoltage monitoring system according to claim 1 and 2 is characterized in that, connects by pci bus between described data collecting card and the computing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154731 CN203149025U (en) | 2013-03-29 | 2013-03-29 | Transient overvoltage monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154731 CN203149025U (en) | 2013-03-29 | 2013-03-29 | Transient overvoltage monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203149025U true CN203149025U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320154731 Expired - Lifetime CN203149025U (en) | 2013-03-29 | 2013-03-29 | Transient overvoltage monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203149025U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101773A (en) * | 2014-07-28 | 2014-10-15 | 四川通源电力科技有限公司 | Electrical power system transient overvoltage acquisition system |
| CN105137158A (en) * | 2015-07-24 | 2015-12-09 | 上海君世电气科技有限公司 | Power system temporary overvoltage monitoring system |
| CN111103454A (en) * | 2019-12-25 | 2020-05-05 | 深圳供电局有限公司 | Overvoltage monitoring method |
-
2013
- 2013-03-29 CN CN 201320154731 patent/CN203149025U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104101773A (en) * | 2014-07-28 | 2014-10-15 | 四川通源电力科技有限公司 | Electrical power system transient overvoltage acquisition system |
| CN104101773B (en) * | 2014-07-28 | 2017-01-18 | 四川通源电力科技有限公司 | Electrical power system transient overvoltage acquisition system |
| CN105137158A (en) * | 2015-07-24 | 2015-12-09 | 上海君世电气科技有限公司 | Power system temporary overvoltage monitoring system |
| CN111103454A (en) * | 2019-12-25 | 2020-05-05 | 深圳供电局有限公司 | Overvoltage monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |