CN204203411U - The two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring - Google Patents
The two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring Download PDFInfo
- Publication number
- CN204203411U CN204203411U CN201420582604.7U CN201420582604U CN204203411U CN 204203411 U CN204203411 U CN 204203411U CN 201420582604 U CN201420582604 U CN 201420582604U CN 204203411 U CN204203411 U CN 204203411U
- Authority
- CN
- China
- Prior art keywords
- voltage
- transformer
- voltage signal
- transformer secondary
- fuse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 31
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000010616 electrical installation Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses the two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring, two kinds of voltage transformer secondary voltage signal conversion equipments, be made up of the first voltage transformer secondary voltage signal conversion equipment and the second voltage transformer secondary voltage signal conversion equipment, the voltage signal of voltage transformer (VT) is converted to the level signal of applicable data acquisition module, ensures ratio and the angular difference precision of transfer process simultaneously.Can be used for the transfer problem of the voltage signal solving voltage transformer (VT) in Substation Electric Equipment on-line monitoring.The beneficial effects of the utility model: 1. two kinds of PT secondary voltage signal conversion regimes are provided.2. first kind of way structure is simple, meets most application scenario.3. second way complex structure, but conversion accuracy is high, and collecting device and voltage transformer secondary signal are isolated, little to voltage transformer secondary side effect of signals.
Description
Technical field
The utility model relates to electrical equipment online monitoring technical field, particularly relates to the two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring.
Background technology
Along with electric system is to super (spy) high pressure, Large Copacity, Iarge-scale system development, the impact of safe operation on national economy and people's lives of electric system is increasing.And electrical equipment is the primary element of composition electric system, be ensure the basis of power supply reliability, the safe operation of electrical equipment is the prerequisite of power system security, stable, economical operation.Along with developing rapidly of the technology such as sensor, optical fiber, computing machine, carrying out real-time on-line monitoring to the state of insulation of high voltage electric equipment under operation can the operating abundant information of equipment, understands the state of insulation that high voltage electric equipment is real-time.Carrying out real-time on-line monitoring to insulation of electrical installation state can the change information of equipment state of insulation parameter (leakage current, dielectric loss angle tan δ, current in resistance property etc.).At present, there has been large development for the On-line Monitoring of Leakage Current method of CVT, CT, lightning arrester in transformer station.
The on-line monitoring (as dielectric loss angle tan δ, equivalent capacitance, current in resistance property etc.) of insulation of electrical installation state need gather the voltage signal of in-phase voltage mutual inductor as computing reference, general voltage transformer secondary voltage signal is 57V or 100V, the level demand of data acquisition cannot be met, need to carry out quadratic transformation to it.Need in conversion to ensure ratio and angular difference precision, meet the accuracy requirement of on-line monitoring parameter.Common mapping mode is changed or electric resistance partial pressure mode conversion for applying transformer mode.
Utility model content
The utility model provides a kind of Substation Electric Equipment on-line monitoring two-in-one voltage chromacoder, is two kinds of voltage transformer secondary voltage signal conversion equipments.
The technical scheme that the utility model solves the problems of the technologies described above is as follows:
The two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring, be two kinds of voltage transformer secondary voltage signal conversion equipments, be made up of the first voltage transformer secondary voltage signal conversion equipment and the second voltage transformer secondary voltage signal conversion equipment.
The first voltage transformer secondary voltage signal conversion equipment described opens I by sky, transformer, fuse I form.Sky is opened I and is connected with transformer, and transformer is connected with fuse I, and the no-load voltage ratio of transformer is 1000:1.It is the transformer primary side of 1000:1 that voltage transformer secondary voltage signal I opens I access no-load voltage ratio through sky, is the voltage output signal after conversion after the secondary connection fuse I of transformer.
Described the second voltage transformer secondary voltage signal conversion regime device opens II by sky, noninductive resistance, fuse II summation current transformer form.Sky is opened II and is connected with noninductive resistance, and noninductive resistance is connected with fuse II, and fuse II is connected with current transformer, and the resistance of noninductive resistance is 10k Ω.Voltage transformer secondary voltage signal II is opened II through sky and is connected with noninductive resistance, short circuit connection is carried out through after current transformer again after overcurrent fuse II, namely voltage transformer secondary voltage signal II is converted to current signal, and this current signal is converted to voltage signal and exports by current transformer.
The utility model has following beneficial effect:
1. two kinds of PT secondary voltage signal conversion regimes are provided.
2. first kind of way structure is simple, meets most application scenario.
3. second way complex structure, but conversion accuracy is high, and collecting device and voltage transformer secondary signal are isolated, little to voltage transformer secondary side effect of signals.
Accompanying drawing explanation
Fig. 1 is the two-in-one voltage chromacoder structural representation of the utility model Substation Electric Equipment on-line monitoring.
In figure, sky opens I 1-1, transformer 1-2, fuse I 1-3, sky leave II 2-1, noninductive resistance 2-2, fuse II 2-3 summation current transformer 2-4.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
The utility model structure as shown in Figure 1, the two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring, be two kinds of voltage transformer secondary voltage signal conversion equipments, be made up of the first voltage transformer secondary voltage signal conversion equipment and the second voltage transformer secondary voltage signal conversion equipment.
It is described that the first voltage transformer secondary voltage signal conversion equipment opens I 1-1, transformer 1-2 by sky, fuse I 1-3 forms.Sky is opened I 1-1 and is connected with transformer 1-2, and transformer 1-2 is connected with fuse I 1-3, and the no-load voltage ratio of transformer 1-2 is 1000:1.Voltage transformer secondary voltage signal I accesses through empty I 1-1 that opens the former limit of transformer 1-2 that no-load voltage ratio is 1000:1, is the voltage output signal after conversion after secondary connection fuse I 1-3 of transformer 1-2.
Described the second voltage transformer secondary voltage signal conversion regime device opens II 2-1, noninductive resistance 2-2 by sky, fuse II 2-3 summation current transformer 2-4 forms.Sky is opened II 2-1 and is connected with noninductive resistance 2-2, and noninductive resistance 2-2 is connected with fuse II 2-3, and fuse II 2-3 is connected with current transformer 2-4, and the resistance of noninductive resistance 2-2 is 10k Ω.Voltage transformer secondary voltage signal II is opened II 2-1 through sky and is connected with noninductive resistance 2-2, short circuit connection is carried out through after current transformer 2-4 again after overcurrent fuse II 2-3, namely voltage transformer secondary voltage signal II is converted to current signal, and this current signal is converted to voltage signal and exports by current transformer 2-4.
During the utility model application, the concrete following steps that adopt realize:
1. select a kind of conversion regime in two kinds of two-in-one voltage chromacoders according to field demand.
If 2. select first via conversion regime, then a phase voltage of voltage transformer secondary voltage signal I and zero line access sky are opened I 1-1, by converted voltage signal I access data harvester.
If 3. select the second road conversion regime, then a phase voltage of voltage transformer secondary voltage signal II and zero line access sky are opened II 2-1, by converted voltage signal II access data harvester.
4 when needs threephase potential transformer secondary voltage signal, accesses three pieces of two-in-one voltage chromacoders of Substation Electric Equipment on-line monitoring.
Claims (1)
1. the two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring, it is characterized in that, be two kinds of voltage transformer secondary voltage signal conversion equipments, be made up of the first voltage transformer secondary voltage signal conversion equipment and the second voltage transformer secondary voltage signal conversion equipment:
The first voltage transformer secondary voltage signal conversion equipment described opens I (1-1) by sky, transformer (1-2), fuse I (1-3) form, sky is opened I (1-1) and is connected with transformer (1-2), transformer (1-2) is connected with fuse I (1-3), and the no-load voltage ratio of transformer (1-2) is 1000:1; Voltage transformer secondary voltage signal I is opened I (1-1) through sky and is accessed transformer (1-2) the former limit that no-load voltage ratio is 1000:1, is the voltage output signal after conversion after secondary connection fuse I (1-3) of transformer (1-2);
Described the second voltage transformer secondary voltage signal conversion regime device opens II (2-1) by sky, noninductive resistance (2-2), fuse II (2-3) summation current transformer (2-4) form, sky is opened II (2-1) and is connected with noninductive resistance (2-2), noninductive resistance (2-2) is connected with fuse II (2-3), fuse II (2-3) is connected with current transformer (2-4), and the resistance of noninductive resistance (2-2) is 10k Ω; Voltage transformer secondary voltage signal II is opened II (2-1) through sky and is connected with noninductive resistance (2-2), short circuit connection is carried out through after current transformer (2-4) again after overcurrent fuse II (2-3), namely voltage transformer secondary voltage signal II is converted to current signal, and this current signal is converted to voltage signal and exports by current transformer (2-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420582604.7U CN204203411U (en) | 2014-10-09 | 2014-10-09 | The two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420582604.7U CN204203411U (en) | 2014-10-09 | 2014-10-09 | The two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204203411U true CN204203411U (en) | 2015-03-11 |
Family
ID=52661356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420582604.7U Expired - Fee Related CN204203411U (en) | 2014-10-09 | 2014-10-09 | The two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204203411U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542784A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | CVT secondary side remote monitoring device |
| CN110542782A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | voltage real-time acquisition device for CVT secondary side |
| CN110542785A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | A CVT secondary side remote real-time monitoring device |
-
2014
- 2014-10-09 CN CN201420582604.7U patent/CN204203411U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542784A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | CVT secondary side remote monitoring device |
| CN110542782A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | voltage real-time acquisition device for CVT secondary side |
| CN110542785A (en) * | 2018-05-28 | 2019-12-06 | 广东电网有限责任公司 | A CVT secondary side remote real-time monitoring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gao et al. | Novel pilot protection principle for high‐voltage direct current transmission lines based on fault component current characteristics | |
| Swetapadma et al. | Improved fault location algorithm for multi‐location faults, transforming faults and shunt faults in thyristor controlled series capacitor compensated transmission line | |
| Gaur et al. | New fault detection and localisation technique for double‐circuit three‐terminal transmission line | |
| Al‐Emadi et al. | Synchrophasor‐based backup distance protection of multi‐terminal transmission lines | |
| Xu et al. | Fault phase selection method applied to tie line of renewable energy power stations | |
| CN204203411U (en) | The two-in-one voltage chromacoder of Substation Electric Equipment on-line monitoring | |
| Anand et al. | Ensemble empirical mode decomposition‐based differential protection scheme for islanded and grid‐tied AC microgrid | |
| Gomes et al. | Analysis of the energization test of a half-wavelength AC link composed of similar transmission lines | |
| Pavankumar et al. | Microgrid fault detection technique using phase change of Positive sequence current | |
| Shen et al. | Generalized discrete‐time equivalent model for interfacing the grid‐connected photovoltaic system | |
| Rehman et al. | Quantitative index to evaluate the impact of reactive power compensators on AC system's strength of UHVDC transmission under hierarchical infeed mode | |
| Xie et al. | Online parameter determination based adaptive single‐phase reclosing scheme for wind‐powered outgoing lines with shunt reactors | |
| CN203178369U (en) | Bushing monitoring system for intelligent substation | |
| CN204789750U (en) | High voltage energy meter | |
| Xu et al. | Analysis and assessment standards of power stability of multi‐send HVDC systems | |
| CN101561976B (en) | Low-voltage electric energy metering training device | |
| CN104979808B (en) | A kind of inverter calculation of penetration level method counted and longitudinal difference protection influences | |
| CN202735412U (en) | On-line measurement device for capacitive current of power grid with neutral point grounded through arc suppression coil | |
| CN104391158A (en) | Voltage signal monitoring sampling and converting apparatus of high-voltage electrical equipment | |
| CN105244860B (en) | A kind of differential protecting method based on positive sequence admittance | |
| CN208076599U (en) | A kind of power wire broadband carrier communication collector | |
| Zhao et al. | Zone partitioning protection strategy for DC systems incorporating offshore wind farm | |
| CN203368515U (en) | Power-balance analyzing device based on narrowband power-line carrier waves and used for station area | |
| Li et al. | A wide‐area relaying protection system based on multi‐point measurement information | |
| Su et al. | Investigation of the use of electromagnetic transient models for transient stability simulation |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20191009 |