CN203178369U - Bushing monitoring system for intelligent substation - Google Patents
Bushing monitoring system for intelligent substation Download PDFInfo
- Publication number
- CN203178369U CN203178369U CN 201220642087 CN201220642087U CN203178369U CN 203178369 U CN203178369 U CN 203178369U CN 201220642087 CN201220642087 CN 201220642087 CN 201220642087 U CN201220642087 U CN 201220642087U CN 203178369 U CN203178369 U CN 203178369U
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- Prior art keywords
- combiner
- intelligent substation
- current
- monitoring system
- conversion
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- Expired - Lifetime
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Abstract
The utility model relates to a bushing monitoring system for an intelligent substation; the system comprises electronic current transformers measuring a bushing bleeder circuit; signal output of the electronic current transformers is connected with a locally mounted current collector used for completing current signal conditioning, AD conversion and electric light conversion; the current collector is connected with a combiner through a fiber; the combiner is also in sampling connection with bus voltage transformers; and the combiner is connected with a bushing monitoring device through a fiber. The scheme is suitable for the intelligent substation provided with various electronic transformers, so monitoring functions for bushings insulation parameters like dielectric loss factor and equivalence capacitance of power transformers and reactors are completed.
Description
Technical field
The utility model relates to a kind of casing monitoring system that is applicable to intelligent substation.
Background technology
Capacitive apparatus is equipped with the casing monitoring device, insulation parameters such as leakage current, dielectric dissipation factor and equivalent capacitance amount with equipment casings such as monitoring power transformer, reactors, judge the state of insulation of tested sleeve pipe, the latency fault is predicted, guarantee the reliability service of sleeve pipe.
At present, the main harmonic analysis method that adopts is carried out casing monitoring, be illustrated in figure 1 as traditional sleeve monitoring scheme typical wiring figure, it adopts current sensor and conventional PT to gather current and voltage signals, and by measuring and conversion is sent to signal in the casing monitoring device, draw insulation parameters such as Leakage Current by a series of algorithm at last, differentiate the state of insulation of sleeve pipe with this.The defective of this method is:
1) can not be applied in the application scenario of unconventional electric mutual inductor, limitation is very big;
2) the small-signal remote transmission or adopt 485 communication transmission modes relatively poor than the anti-interference of optical-fibre communications.
The utility model content
The purpose of this utility model provides a kind of casing monitoring system that is applicable to intelligent substation, in order to solve the problem that prior art is not suitable for unconventional mutual inductor.
For achieving the above object, scheme of the present utility model is: the casing monitoring system that is applicable to intelligent substation, comprise for the electronic current mutual inductor of measuring the sleeve pipe bleeder circuit, the output of electronic current mutual inductor signal connects local mounted, as to be used for finishing current signal conditioning, an AD conversion and electric light conversion current acquisition device, and the current acquisition device connects a combiner by optical fiber; The described combiner connection bus voltage transformer (VT) of also sampling, combiner is by optical fiber joint sleeve monitoring device.
Described bus-bar potential transformer is electronic type voltage transformer, and combiner connects described electronic type voltage transformer by optical fiber.
Described bus-bar potential transformer is electromagnetic potential transformer, and the output of electromagnetic potential transformer signal connects local mounted, as to be used for finishing voltage signal conditioning, an AD conversion and electric light conversion voltage acquisition device.
Scheme of the present utility model is applicable to the intelligent substation that various electronic mutual inductors are installed, and finishes the monitoring function of insulation parameters such as the dielectric dissipation factor of equipment casings such as power transformer, reactor and equivalent capacitance amount.Monitoring parameter is exported in the mode of IEC61850.Improve the measuring accuracy of casing monitoring parameter, improved the accuracy of insulation parameter.Adopt optical-fibre communications, antijamming capability is strong.
Description of drawings
Fig. 1 is prior art system figure;
Fig. 2 is the system diagram of embodiment 1;
Fig. 3 is the system diagram of embodiment 2.
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
Embodiment 1
Be applicable to the casing monitoring schematic structure diagram of electronic mutual inductor as shown in Figure 2, electronics PT is sent to combiner after gathering high voltage bus voltage in three phases information; The Leakage Current of capacitive sleeve pipe is then delivered to by the punching coil pickoff and is sent into combiner with the FT3 form through optical fiber after the local mounted current acquisition device of sleeve pipe is finished signal condition and AD conversion simultaneously, after combiner is finished synchronized sampling, signal is delivered in the casing monitoring device through optical fiber in the mode of 9-2, finishes the monitoring function of insulation parameters such as the dielectric dissipation factor of equipment casings such as power transformer, reactor and equivalent capacitance amount.
Embodiment 2
Be applicable to the casing monitoring schematic structure diagram of conventional mutual inductor as shown in Figure 3, when adopting conventional PT, the voltage sensor of hall principle is installed on the spot at the PT cabinet, gather the analog voltage signal of PT secondary circuit, local mounted voltage acquisition device in the PT cabinet is delivered in its output, finishes signal condition and AD conversion back and sends into combiner with the FT3 form through optical fiber; The Leakage Current of capacitive sleeve pipe is then delivered to by the punching coil pickoff and is sent into same combiner with the FT3 form through optical fiber after the local mounted current acquisition device of sleeve pipe is finished signal condition and AD conversion simultaneously, after combiner is finished synchronized sampling, signal is delivered in the casing monitoring device through optical fiber in the mode of 9-2, finishes the monitoring function of insulation parameters such as the dielectric dissipation factor of equipment casings such as power transformer, reactor and equivalent capacitance amount.
More than two kinds of schemes all take full advantage of existing process layer equipment, be existing equipment as the collector of electric mutual inductor, combiner, casing monitoring device etc., realize the synchronous collection of casing monitoring data with them, need not develop new hardware device, have very high practicality and economy.
Claims (3)
1. be applicable to the casing monitoring system of intelligent substation, it is characterized in that, comprise for the electronic current mutual inductor of measuring the sleeve pipe bleeder circuit, the output of electronic current mutual inductor signal connects local mounted, as to be used for finishing current signal conditioning, an AD conversion and electric light conversion current acquisition device, and the current acquisition device connects a combiner by optical fiber; The described combiner connection bus voltage transformer (VT) of also sampling, combiner is by optical fiber joint sleeve monitoring device.
2. the casing monitoring system that is applicable to intelligent substation according to claim 1 is characterized in that, described bus-bar potential transformer is electronic type voltage transformer, and combiner connects described electronic type voltage transformer by optical fiber.
3. the casing monitoring system that is applicable to intelligent substation according to claim 1, it is characterized in that, described bus-bar potential transformer is electromagnetic potential transformer, and the output of electromagnetic potential transformer signal connects local mounted, as to be used for finishing voltage signal conditioning, an AD conversion and electric light conversion voltage acquisition device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642087 CN203178369U (en) | 2012-11-29 | 2012-11-29 | Bushing monitoring system for intelligent substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220642087 CN203178369U (en) | 2012-11-29 | 2012-11-29 | Bushing monitoring system for intelligent substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203178369U true CN203178369U (en) | 2013-09-04 |
Family
ID=49075047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220642087 Expired - Lifetime CN203178369U (en) | 2012-11-29 | 2012-11-29 | Bushing monitoring system for intelligent substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203178369U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926495A (en) * | 2014-05-05 | 2014-07-16 | 国家电网公司 | Zero-from raising voltage test system |
| CN104125693A (en) * | 2014-08-12 | 2014-10-29 | 国网重庆市电力公司 | Transformer substation lighting control system and control method implemented by same |
| CN105319448A (en) * | 2015-11-13 | 2016-02-10 | 广州供电局有限公司 | A system and a method for simulating the dielectric loss of capacitive apparatuses in a high voltage environment |
| CN113812050A (en) * | 2019-03-28 | 2021-12-17 | 西门子能源全球有限公司 | Power transmission device and analysis method |
-
2012
- 2012-11-29 CN CN 201220642087 patent/CN203178369U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926495A (en) * | 2014-05-05 | 2014-07-16 | 国家电网公司 | Zero-from raising voltage test system |
| CN103926495B (en) * | 2014-05-05 | 2017-03-29 | 国家电网公司 | Stepping up from zero test system |
| CN104125693A (en) * | 2014-08-12 | 2014-10-29 | 国网重庆市电力公司 | Transformer substation lighting control system and control method implemented by same |
| CN104125693B (en) * | 2014-08-12 | 2016-04-06 | 国网重庆市电力公司 | The control method of transformer station's lamp light control system |
| CN105319448A (en) * | 2015-11-13 | 2016-02-10 | 广州供电局有限公司 | A system and a method for simulating the dielectric loss of capacitive apparatuses in a high voltage environment |
| CN113812050A (en) * | 2019-03-28 | 2021-12-17 | 西门子能源全球有限公司 | Power transmission device and analysis 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 |
Granted publication date: 20130904 |
|
| CX01 | Expiry of patent term |