CN207426806U - A kind of digital transformer substation intelligent terminal - Google Patents
A kind of digital transformer substation intelligent terminal Download PDFInfo
- Publication number
- CN207426806U CN207426806U CN201721583825.6U CN201721583825U CN207426806U CN 207426806 U CN207426806 U CN 207426806U CN 201721583825 U CN201721583825 U CN 201721583825U CN 207426806 U CN207426806 U CN 207426806U
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- Prior art keywords
- remote signalling
- power supply
- protection
- observing
- controlling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Abstract
The utility model discloses a kind of digital transformer substation intelligent terminals; including DC power supply, device working power, observing and controlling remote signalling power supply and protection remote signalling power supply; device working power, observing and controlling remote signalling power supply and protection remote signalling power supply are connected to DC power supply by air switch K1, K2 and K3 respectively, and protection remote signalling power supply is for route protection and the state-signal collection signal of bus differential protection.The utility model will protect both remote signalling, observing and controlling remote signalling classification maintenance and management; both protection remote signalling, observing and controlling remote signalling are independent of each other; protection stoppage in transit or incorrect operation can be prevented in secondary circuit defect; ensure the safe operation of power grid; observing and controlling remote signalling power supply can be disconnected in short-term in the processing of observing and controlling remote signalling circuit defect; the personal risk and equipment Risk that on-line treatment is brought are avoided, ensures the safety of personnel and equipment.
Description
Technical field
The utility model belongs to substation's field of terminal technology, and in particular to a kind of digital transformer substation intelligent terminal.
Background technology
The remote signalling of the equipment such as Digitized transformation acquisition breaker, disconnecting link passes through intelligent terminal, intelligent end device work
Making power supply, presently, there are following two situations with remote signalling power supply：
1st, device working power and remote signalling power supply air switch separate.
Circuit use as shown in Fig. 1 in some 110kV digital transformer substations, intelligent end device working power by
Air switch K1 is supplied, and remote signalling power supply is supplied by air switch K2, i.e., device working power and remote signalling power supply separate, and remote signalling is adopted
Collection is independent of each other with device work.
2nd, device working power and remote signalling power supply are spaced apart to be same.
Circuit as shown in Figure 2, intelligent end device working power and remote signalling are used in some 220kV digital transformer substations
Power supply is supplied by air switch K1, i.e., device working power is spaced apart with remote signalling power supply to be same.
Both the above power supply supply model has the following problems：
Fig. 1 disconnects remote signalling power supply air switch in remote signalling circuit defect K2 trippings or short time treatment remote signalling circuit defect
K2, at this time K1 is still in working condition, and the GOOSE links of device are normal, and device is synchronously normal, does not influence the control work(of device
Energy.Although protection act can trip, route protection does not collect circuit breaker position and reclosing block remote signalling, influences circuit
The reclosing function of protection, reclosing cannot be acted correctly；Bus differential protection, which does not collect disconnecting link position, will influence bus differential protection work(
Can, bus differential protection may malfunction or tripping.
Fig. 2 deenergization air switch K1 in remote signalling circuit defect K1 trippings or short time treatment remote signalling loop fault,
Intelligent end device will stop transport, and influence the signal acquisition of device and the control function of primary equipment, primary equipment is caused to be stopped transport.
For protection, route protection needs the circuit breaker position that intelligent terminal gathers, lock-reclosing lock, air pressure is low closes
The external signals such as reclosing, TJR lock-reclosing locks are locked, bus differential protection needs the disconnecting link position that intelligent terminal gathers.More than signal
Signal of interest is defined here as, these signals and the function tight association of protection, if signal error or missing protection will not
It can correctly act, seriously affect the safe operation of power grid.
For the operating condition of overall understanding power transformation, observing and controlling remote signalling of the quantity far more than protection remote signalling has been accessed in observing and controlling,
Such as relatively important signal of circuit breaker position, disconnecting link position, control loop template, breaker pressure, but also acquire remote
Side on the spot, the relatively unessential signal such as light failure, fuser malfunction.
Protect important remote signalling circuit defect and its processing that outaged equipment is needed to belong to normal, and for insignificant observing and controlling remote signalling
Such as a distant place on the spot, such remote signalling circuit defect such as light failure, fuser malfunction and its processing outaged equipment is caused to transport power grid
Row brings great risk, and huge economic loss is brought to enterprise.
However, important remote signalling and measurement and control signal not differentiated control will be protected in digitizing station above, mix in a circuit
In, to the operation of secondary device, there are serious hidden danger.Conventional substation is analogous to, there are parasitic loop, observing and controlling for protection observing and controlling
Influence protection.
Intelligent end device is protected with normal station, the secondary circuit in measure and control device is similar, the secondary circuit in normal station
Defect accounts for more than the 60% of electrical secondary system defect, and digital transformer substation also certainly exists same problem.It is protected in conventional substation
Observing and controlling separates, and two systems are independent of each other, and digital transforming plant protecting observing and controlling does not have apparent border, and protection observing and controlling is mixed.
Secondary circuit defect present in normal station can't be avoided with current technology and equipment completely.
We have accumulated a large amount of successful experiences in the operation and maintenance of conventional substation, have also formulated the rule of related maturation
Journey, digital transformer substation also lack relevant technology and standard, and operation and maintenance experience lacks.The processing of secondary circuit defect, with
The experience of normal station needs power failure or deactivated relevant protection device for the processing of important protection remote signalling defect, distant for observing and controlling
Believe that defect processing can disconnect remote signalling power supply with on-line treatment or in short-term, do not influence the normal operation of protection.Digitlization becomes
For power station, remote signalling circuit such as Fig. 1 or Fig. 2 can not accomplish charged or disconnect remote signalling power supply processing secondary circuit defect, charged
Processing may cause the function of changing influence protection of protection remote signalling, and related remote signalling guarantor will not collected by disconnecting remote signalling power supply protection
Shield can not work normally.
The content of the invention
The utility model solve the technical issues of be：A kind of digital transformer substation intelligent terminal is provided, it is above-mentioned existing to solve
There is problem present in technology.
The technical solution that the utility model is taken is：A kind of digital transformer substation intelligent terminal, including DC power supply, dress
Put working power, observing and controlling remote signalling power supply and protection remote signalling power supply, device working power, observing and controlling remote signalling power supply and protection remote signalling power supply
DC power supply is connected to by air switch K1, K2 and K3 respectively, protection remote signalling power supply is protected for line protective devices and female difference
The remote signals acquisition of protection unit.
The beneficial effects of the utility model：Compared with prior art, the utility model will protect remote signalling, observing and controlling remote signalling to pass through
It installs air switch additional and realizes the two classification maintenance and management, both protection remote signalling, observing and controlling remote signalling are independent of each other, are lacked in secondary circuit
Protection stoppage in transit or incorrect operation can be prevented when sunken, ensures the safe operation of power grid, in the processing of observing and controlling remote signalling circuit defect
Observing and controlling remote signalling power supply can be disconnected in short-term, avoids personal risk and equipment Risk that on-line treatment is brought, ensure personnel and equipment
Safety.
The defects of observing and controlling remote signalling circuit, will not cause the stoppage in transit of secondary device, and the processing of defect need not have a power failure, need not
Deactivated related protection equipment, ensures the continued power of power grid, and the grade for reducing secondary circuit defect mitigates the maintenance management of enterprise
Burden.Device caused by preventing insignificant remote signalling circuit defect damages, and improves the utilization rate of equipment, reduces the plant maintenance of enterprise
Administration fee.
Description of the drawings
Fig. 1 is that device working power separates connection diagram with remote signalling power supply air switch；
Fig. 2 is that device working power is spaced apart connection diagram with remote signalling power supply to be same；
Fig. 3 is the schematic diagram of circuit connection structure of the utility model.
Specific embodiment
Below in conjunction with the accompanying drawings and the utility model is described further in specific embodiment.
Embodiment 1：As shown in figure 3, a kind of digital transformer substation intelligent terminal, including DC power supply, device working power,
Observing and controlling remote signalling power supply and protection remote signalling power supply, device working power, observing and controlling remote signalling power supply and protection remote signalling power supply pass through sky respectively
Air cock K1, K2 and K3 are connected to DC power supply, and protection remote signalling power supply is for the state-signal collection of route protection and bus differential protection letter
Number.
The important remote signalling that route protection, bus differential protection need supplies the remote signalling circuit of power supply by K3 air switches in Fig. 3
Acquisition, observing and controlling remote signalling supply power supply by K2 air switches, and device working power is supplied by K1 air switches.It is returned in observing and controlling remote signalling
Road defect causes the tripping of K2 air switches or short time treatment defect to disconnect K2 air switches and do not influence the normal operation of protection.
K1 corresponds to the working power plug-in unit of intelligent terminal, and the observing and controlling remote signalling that K2 corresponds to intelligent end device is opened into slotting
Part, the protection remote signalling that K3 corresponds to intelligent end device are opened into plug-in unit.In the installation of intelligent terminal cabinet, protection remote signalling circuit is used
Yellow wire connection terminal, observing and controlling remote signalling circuit grey wire connection terminal, different colours have warning function, avoid mis-wired, avoid
It touches by mistake.
The remote signalling of route protection includes the circuit breaker position, lock-reclosing lock signal, the low locking of air pressure of intelligent terminal acquisition
Reclosing signal and TJR lock-reclosing lock signals, the remote signalling of bus differential protection include the disconnecting link position of intelligent terminal acquisition.
Safety benefit：Both remote signalling, observing and controlling remote signalling classification maintenance and management are protected, both protection remote signalling, observing and controlling remote signalling are mutually
It does not influence, protection stoppage in transit or incorrect operation can be prevented in secondary circuit defect, ensures the safe operation of power grid.It is distant in observing and controlling
Observing and controlling remote signalling power supply can be disconnected in short-term during the processing for believing circuit defect, avoid personal risk and equipment wind that on-line treatment is brought
Danger ensures the safety of personnel and equipment.
Economic benefit：The defects of observing and controlling remote signalling circuit, will not cause the stoppage in transit of secondary device, and the processing of defect need not stop
Electricity need not disable related protection equipment, ensure the continued power of power grid.The grade for reducing secondary circuit defect mitigates enterprise
Maintenance management is born.Device caused by preventing insignificant remote signalling circuit defect damages, and improves the utilization rate of equipment, reduces enterprise
Equipment maintenance and management expense.
The classification of remote signalling separates the raising managed for contributing to Enterprise Lean management.
Remote signalling is classified：Remote signalling is divided into protection remote signalling and observing and controlling remote signalling, protection remote signalling grade is higher than observing and controlling remote signalling grade, no
Correspond to different defect ranks with circuit, convenient for being classified maintenance and management.
Remote signalling observing and controlling remote signalling is protected to separate：Protection remote signalling observing and controlling remote signalling circuit is separated on circuit, power supply is using different
Air switch reduces circuit defective effect scope；It is opened on hardware using difference into plug-in unit, avoids protection remote signalling observing and controlling remote signalling mutual
Interference；It is installing, protection remote signalling observing and controlling remote signalling is had warning function for maintenance management, dropped using different colours wire connection terminal
Low circuit defect handles risk, also avoids influencing each other for the two.
The above, is only specific embodiment of the present utility model example, the scope of protection of the utility model not office
It is limited to this.Be familiar in the technical scope that the those skilled in the art disclose in the utility model, can easily find variation or
Substitute mode, these should be covered within the scope of the utility model.For this purpose, the scope of protection of the utility model should be with
Subject to the scope of the claims.
Claims (1)
1. a kind of digital transformer substation intelligent terminal, it is characterised in that：Including DC power supply, device working power, observing and controlling remote signalling
Power supply and protection remote signalling power supply, device working power, observing and controlling remote signalling power supply and protection remote signalling power supply respectively by air switch K1,
K2 and K3 is connected to DC power supply, and remote signals of the protection remote signalling power supply for line protective devices and bus differential protection device are adopted
Collection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583825.6U CN207426806U (en) | 2017-11-23 | 2017-11-23 | A kind of digital transformer substation intelligent terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721583825.6U CN207426806U (en) | 2017-11-23 | 2017-11-23 | A kind of digital transformer substation intelligent terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426806U true CN207426806U (en) | 2018-05-29 |
Family
ID=62302733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721583825.6U Active CN207426806U (en) | 2017-11-23 | 2017-11-23 | A kind of digital transformer substation intelligent terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207426806U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350656A (en) * | 2019-06-19 | 2019-10-18 | 国网安徽省电力有限公司宣城供电公司 | It an a kind of distant place throws and moves back reclosing device |
| CN114034893A (en) * | 2021-11-17 | 2022-02-11 | 贵州电网有限责任公司 | Multifunctional wiring terminal integrating remote measurement and remote signaling acquisition |
-
2017
- 2017-11-23 CN CN201721583825.6U patent/CN207426806U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350656A (en) * | 2019-06-19 | 2019-10-18 | 国网安徽省电力有限公司宣城供电公司 | It an a kind of distant place throws and moves back reclosing device |
| CN114034893A (en) * | 2021-11-17 | 2022-02-11 | 贵州电网有限责任公司 | Multifunctional wiring terminal integrating remote measurement and remote signaling acquisition |
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