CN110034540A - A kind of main transformer equipment protection system and method - Google Patents
A kind of main transformer equipment protection system and method Download PDFInfo
- Publication number
- CN110034540A CN110034540A CN201810030774.7A CN201810030774A CN110034540A CN 110034540 A CN110034540 A CN 110034540A CN 201810030774 A CN201810030774 A CN 201810030774A CN 110034540 A CN110034540 A CN 110034540A
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- Prior art keywords
- protection
- main transformer
- module
- low reactance
- current loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of main transformer equipment protection system and method, the system comprises: main transformer, protective device and current loop；Wherein, the protective device includes the main transformer protection module and low reactance protective module combined, and the current loop includes the first current loop and the second current loop；The main transformer protection module is connected by first current loop with the main transformer, and the low reactance protective module is connected by second current loop with the main transformer.By the system and method, it is capable of protecting to main transformer equipment for centralized integrated, reduces protection room screen position setting quantity, main transformer protection becomes concentrating from dispersing, and reduces cable connection quantity and cost of investment.The drawbacks of improving low reactance protective device list set configuration in the prior art simultaneously.
Description
Technical field:
The present invention relates to tranformer protection technical field more particularly to a kind of main transformer equipment protection system and methods.
Background technique:
In the load center region of large scale and high density, the principal contradiction of power network development is electrical structure tension and short circuit electricity
Flow horizontal is difficult to control.Power grid 500kV main transformer of transformer substation keeps its zero sequence electric generally by the way of neutral-point solid ground
Anti- to substantially reduce, leading to the 220kV single-phase short circuit current of part 500kV substation is more than three short circuit current, or even close disconnected
The rupturing capacity of road device.Therefore, for limiting short-circuit current level, earthing mode is changed to neutrality by being directly grounded by some enterprises
Low reactance equipment ground of the point through certain resistance value.
However inventor has found in the implementation of the present invention, has installed low reactance equipment main transformer really additional for neutral point
Depressor, main transformer neutral point low reactance equipment protection system and main transformer protection system are separately provided, to increase
Quantity is arranged in protection room screen position, increases the construction investment of substation's construction, in addition, the main transformer neutral point small electricity of addition
Anti- equipment protection system increases cable connection quantity, and warning message is not easy to integrate.
Summary of the invention:
The purpose of the present invention is to provide a kind of main transformer equipment protection system and methods, to solve above-mentioned existing skill
The problem of art.
The present invention is implemented by following technical solution:
The embodiment of the invention provides a kind of main transformer equipment protection systems, comprising:
Main transformer, protective device and current loop；Wherein, the protective device includes the main transformer combined
Protective module and low reactance protective module, the current loop include the first current loop and the second current loop；The main transformer
Depressor protective module is connected by first current loop with the main transformer, and the low reactance protective module passes through described
Second current loop is connected with the main transformer.
Further, the system also includes input circuit is protected, low reactance guarantor is provided in the protection input circuit
Pressing plate is moved back in protective function throwing, and the low reactance defencive function throwing moves back pressing plate and is connected with the low reactance protective module, for selecting
State the defencive function of low reactance protective module.
Further, the system also includes output loop, trip(ping) circuit, the tripping are provided in the output loop
Circuit is connected with the low reactance protective module.
Further, the main transformer protection module and the low reactance protective module are arranged in same protection screen.
Further, the main transformer protection module protection function includes: longitudinal difference protection, point side differential protection and failure
Component differential protection.
Further, the low reactance protective module defencive function includes: overload protection and overcurrent protection.
Further, the system also includes data collection and processing module, the data collection and processing module and institute
State protective device, the transformer is communicatively coupled.
Further, the main transformer includes the high-pressure side 550kV, 220KV medium voltage side and 35KV low-pressure side.
Another embodiment of the present invention provides a kind of main transformer equipment protection methods, comprising:
Increase corresponding second electric current of low reactance protective module in the first current loop of main transformer protection module to return
Road, so that main transformer pressure protective module be combined with the low reactance protective module；It is protected by the main transformer
Shield module and the low reactance protective module protect the main transformer.
Further, the defencive function of the protection includes: longitudinal difference protection, point side differential protection, fault component based differential protection guarantor
Shield, overload protection and overcurrent protection.
Advantages of the present invention:
Main transformer equipment protection system provided in an embodiment of the present invention and method, the system comprises: main transformer, guarantor
Protection unit and current loop；Wherein, the protective device includes that the main transformer protection module combined and low reactance are protected
Module is protected, the current loop includes the first current loop and the second current loop；The main transformer protection module passes through institute
The first current loop is stated to be connected with the main transformer, the low reactance protective module by second current loop with it is described
Main transformer is connected.By the system and method, it is capable of protecting to main transformer equipment for centralized integrated, reduces
Protect room screen position that quantity is set, main transformer protection becomes concentrating from dispersing, and reduces cable connection quantity and cost of investment.Together
When improve in the prior art low reactance protective device list set configuration the drawbacks of.
Detailed description of the invention:
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is existing transformer equipment protection system with drawing；
Fig. 2 is main transformer equipment protection system structural schematic diagram provided by the embodiment of the present invention；
Fig. 3 is main transformer equipment protection system provided by the embodiment of the present invention with drawing；
Fig. 4 is current circuit connections figure provided by the embodiment of the present invention；
Fig. 5 is input circuit contact connection figure provided by the embodiment of the present invention；
Fig. 6 is output loop contact connection figure provided by the embodiment of the present invention；
Fig. 7 is main transformer equipment protection method flow diagram provided by the embodiment of the present invention.
Specific embodiment:
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is only to be not intended to be limiting merely for for the purpose of describing particular embodiments
The present invention.In the embodiment of the present invention and the "an" of singular used in the attached claims, " described " and "the"
It is also intended to including most forms, unless the context clearly indicates other meaning.
Firstly, to the present embodiments relate to noun carry out description below.
Small reactor on neutral point, small reactor on neutral point are generally located on the compensation equipment of high-tension line --- in high voltage reactor,
High voltage reactor is star connection A, B, C parallel three phase, concatenates a low reactance again at the neutral point of star-star connection, that is, is formed
High voltage reactor is grounded through small reactor on neutral point.
Main transformer protection refers to the various protections carried out to the main transformer equipment in substation.
Fig. 1 is that transformer equipment protects system with drawing in the prior art, as shown in Figure 1, neutral in 500kV main transformer
Point side installs low reactance equipment additional, and small reactor on neutral point measuring and controlling protective device has been separately configured in low reactance complete set of equipments, defencive function
Including overload and overcurrent protection, main transformer protection device is free of the defencive function of low reactance, main transformer protection device
With low reactance protective device separate configuration.The protection system of the prior art increases screen bit quantity, cable connection quantity and cost
Investment, warning message are not easy to integrate.
The technical solution of the embodiment of the present invention is described in detail below.
Fig. 2 is main transformer equipment protection system structural schematic diagram provided in an embodiment of the present invention.As shown in Fig. 2, this hair
The main transformer equipment protection system that bright embodiment provides, comprising: main transformer 10, protective device 20 and current loop 30.
Protective device 20 includes the main transformer protection module 21 and low reactance protective module 22 combined, and electric current returns
Road 30 includes the first current loop 31 and the second current loop 32.Main transformer protection module 21 by the first current loop 31 with
Main transformer 10 is connected, and low reactance protective module 22 is connected by the second current loop 32 with main transformer 10.
Specifically, Fig. 3 is the protection system of transformer equipment provided by the embodiment of the present invention with drawing, as shown in figure 3, main
Tranformer protection module 21 and low reactance protective module 22 are arranged in same protection screen, during specific implementation, Ke Yigen
Multiple protection screens are set according to actual conditions, corresponding main transformer protection module and low reactance protection mould are set in each protection screen
The case where block, Fig. 3 shows two protection screens.
Specifically, the main transformer protection module protection function includes: longitudinal difference protection, point side differential protection and failure point
Measure differential protection.The low reactance protective module defencive function includes: overload protection and overcurrent protection.The main transformer packet
Include the high-pressure side 550kV, 220KV medium voltage side and 35KV low-pressure side.
Specifically, Fig. 4 is current circuit connections figure provided by the embodiment of the present invention, as shown in figure 4, current loop 30 wraps
The first current loop 31 and current loop 32 are included, includes main transformer neutral point low reactance zero sequence current mutual inductance in current loop 32
Device 1LLH electric current.
Optionally, Fig. 5 is input circuit contact connection figure provided by the embodiment of the present invention, as shown in figure 5, the system
Further include protection input circuit, the throwing of low reactance defencive function is provided in the protection input circuit and moves back pressing plate, the low reactance
Defencive function throwing moves back pressing plate and is connected with low reactance protective module 22, for selecting the defencive function of the low reactance protective module 22
(overload protection, overcurrent protection), to realize that unrestricted choice defencive function and freely throwing moves back.
Optionally, Fig. 6 is output loop contact connection figure provided by the embodiment of the present invention, as shown in fig. 6, the system
Further include output loop, trip(ping) circuit, the trip(ping) circuit and 22 phase of low reactance protective module are provided in the output loop
Even, has trip protection function.The quantity of the trip(ping) circuit can be freely arranged, and herein with no restrictions, Fig. 6 is shown the present invention
2 tunnel trip(ping) circuits.
Optionally, the system also includes data collection and processing module, the data collection and processing module and protection
Device 20, transformer 10 are communicatively coupled, the data collection and processing module for being filtered to collected data,
Amplitude calculates, vector calculates, order components calculate；Stabilization, delay, broadening processing and difference stream, braking are carried out to collected data
The calculating of electric current；According to data processed result, trip command and/or protection instruction are generated.
Main transformer equipment protection system provided in an embodiment of the present invention, the system comprises: main transformer, protective device
And current loop；Wherein, the protective device includes the main transformer protection module and low reactance protective module combined,
The current loop includes the first current loop and the second current loop；The main transformer protection module passes through first electricity
It flows back to road to be connected with the main transformer, the low reactance protective module passes through second current loop and the main transformer
It is connected.By the system, it is capable of protecting to main transformer equipment for centralized integrated, reduces the setting of protection room screen position
Quantity, main transformer protection become concentrating from dispersing, and reduce cable connection quantity and cost of investment.Existing skill is improved simultaneously
In art the drawbacks of small reactance protection list set configuration.
Fig. 7 is main transformer equipment protection method flow chart provided in an embodiment of the present invention.As shown in fig. 7, the present invention is real
The main transformer equipment protection method of example offer is provided, comprising:
S701 increases corresponding second electricity of low reactance protective module in the first current loop of main transformer protection module
Road is flowed back to, so that main transformer pressure protective module be combined with the low reactance protective module.
Specifically, main transformer protection module is connected by the first current loop with main transformer, low reactance protective module
It is connected by the second current loop with main transformer.
Optionally, it is also provided with the throwing of low reactance defencive function in protection input circuit and moves back pressing plate, the low reactance is protected
Protective function throwing moves back pressing plate and is connected with low reactance protective module, and the defencive function of the low reactance protective module can be selected (excessively negative
Lotus protection, overcurrent protection), to realize that unrestricted choice defencive function and freely throwing moves back.
Optionally, trip(ping) circuit, the trip(ping) circuit and low reactance protective module phase are also provided in output loop
Even, has trip protection function.
S702 protects the main transformer by the main transformer protection module and the low reactance protective module
Shield.
Specifically, the defencive function of the main transformer protection module includes: longitudinal difference protection, point side differential protection, failure
Component differential protection；The defencive function of the low reactance protective module includes: overload protection and overcurrent protection.
Main transformer equipment protection method provided in an embodiment of the present invention, which comprises in main transformer protection mould
Increase corresponding second current loop of low reactance protective module in first current loop of block, thus by the main transformer protection mould
Block is combined with the low reactance protective module.Pass through the main transformer protection module and the low reactance protective module
The main transformer is protected.By the method, it is capable of protecting to main transformer equipment for centralized integrated, subtracts
Lacked protection room screen position setting quantity, main transformer protection becomes concentrating from dispersing, reduce cable connection quantity and investment at
This.The drawbacks of improving low reactance protective device list set configuration in the prior art simultaneously.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of main transformer equipment protection system characterized by comprising
Main transformer, protective device and current loop；Wherein,
The protective device includes the main transformer protection module and low reactance protective module combined, the current loop
Including the first current loop and the second current loop；
The main transformer protection module is connected by first current loop with the main transformer, the low reactance protection
Module is connected by second current loop with the main transformer.
2. system according to claim 1, which is characterized in that the system also includes protection input circuit, the protections
It is provided with the throwing of low reactance defencive function in input circuit and moves back pressing plate, pressing plate and the low reactance are moved back in the low reactance defencive function throwing
Protective module is connected, for selecting the defencive function of the low reactance protective module.
3. system according to claim 1 or 2, which is characterized in that the system also includes output loops, described to export back
Trip(ping) circuit is provided in road, the trip(ping) circuit is connected with the low reactance protective module.
4. system according to claim 1, which is characterized in that the main transformer protection module and low reactance protection
Module is arranged in same protection screen.
5. system according to claim 1, which is characterized in that the main transformer protection module protection function includes: vertical
Difference protection divides side differential protection and fault component based differential protection to protect.
6. system according to claim 1, which is characterized in that the low reactance protective module defencive function included: negative
Lotus protection and overcurrent protection.
7. according to claim 1 or the described in any item systems of 2 or 4-6, which is characterized in that the system also includes data collections
And processing module, the data collection and processing module are communicatively coupled with the protective device, the transformer.
8. according to claim 1 or the described in any item systems of 2 or 4-6, which is characterized in that the main transformer includes 550kV
High-pressure side, 220KV medium voltage side and 35KV low-pressure side.
9. a kind of main transformer equipment protection method characterized by comprising
Increase corresponding second current loop of low reactance protective module in the first current loop of main transformer protection module, from
And main transformer pressure protective module is combined with the low reactance protective module；
The main transformer is protected by the main transformer protection module and the low reactance protective module.
10. according to the method described in claim 9, it is characterized in that, the defencive function of the protection includes: longitudinal difference protection, divides
Side differential protection, fault component based differential protection protection, overload protection and overcurrent protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030774.7A CN110034540A (en) | 2018-01-12 | 2018-01-12 | A kind of main transformer equipment protection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030774.7A CN110034540A (en) | 2018-01-12 | 2018-01-12 | A kind of main transformer equipment protection system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110034540A true CN110034540A (en) | 2019-07-19 |
Family
ID=67234766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810030774.7A Withdrawn CN110034540A (en) | 2018-01-12 | 2018-01-12 | A kind of main transformer equipment protection system and method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110034540A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850205A (en) * | 2019-11-12 | 2020-02-28 | 中车长春轨道客车股份有限公司 | Auxiliary device for differential flow monitoring test of motor train unit |
| CN111342429A (en) * | 2020-04-22 | 2020-06-26 | 郑州润杰电力勘测设计有限公司 | Main transformer equipment protection system |
-
2018
- 2018-01-12 CN CN201810030774.7A patent/CN110034540A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850205A (en) * | 2019-11-12 | 2020-02-28 | 中车长春轨道客车股份有限公司 | Auxiliary device for differential flow monitoring test of motor train unit |
| CN110850205B (en) * | 2019-11-12 | 2021-08-27 | 中车长春轨道客车股份有限公司 | Auxiliary device for differential flow monitoring test of motor train unit |
| CN111342429A (en) * | 2020-04-22 | 2020-06-26 | 郑州润杰电力勘测设计有限公司 | Main transformer equipment protection system |
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Application publication date: 20190719 |