CN207166130U - A kind of Control protection system of mixed topology dc circuit breaker - Google Patents
A kind of Control protection system of mixed topology dc circuit breaker Download PDFInfo
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- CN207166130U CN207166130U CN201721015839.8U CN201721015839U CN207166130U CN 207166130 U CN207166130 U CN 207166130U CN 201721015839 U CN201721015839 U CN 201721015839U CN 207166130 U CN207166130 U CN 207166130U
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- circuit breaker
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- direct current
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- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 230000002633 protecting Effects 0.000 description 2
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Abstract
The utility model provides a kind of Control protection system of mixed topology dc circuit breaker, applied to containing in hybrid dc circuit breaker direct current network or multi-terminal direct current transmission system.The system includes dc circuit breaker body control function, breaker body defencive function and DC line protection function, passes through the configuration of the system; it is compact-sized; secondary device quantity can be reduced, while the DC line fault mute time can be improved, meets the requirement of straight-flow system operational reliability.
Description
Technical field
The utility model belongs to Power System Flexible AC-HVDC technical field, and in particular to a kind of mixed topology direct current
The Control protection system of breaker.
Background technology
Technology of HVDC based Voltage Source Converter has been obtained more and more extensive with its more preferable controllability and adaptability in power grid construction
Application.After end-to-end flexible DC power transmission and Multi-end flexible direct current transmission engineering, State Grid Corporation of China proposes structure
The concept of flexible direct current power network, it flexibly can control electric network swim to be distributed, and solve extensive new energy and send out to ask with dissolving etc.
Topic, so as to which the development plan of energy interconnection be done step-by-step.The DC power transmission line of flexible direct current power network is designed using overhead line, with
The cable power transmission that flexible direct current engineering uses at present has larger difference, and the probability that line fault occurs is higher.For direct current
For net, instantaneity or permanent DC line fault, after corresponding protection act strategy is taken, direct current should not be influenceed
The operation of other elements in net, ensure the reliability of direct current network, and the protection that flexible DC power transmission engineering uses can not meet
The demand of direct current network route protection.Therefore, route protection research is particularly important in flexible direct current power grid control protection technique.
Existing soft straight power transmission engineering, transmission distance is nearer, and using cable connection, probability of malfunction is relatively low, and protection is moved
Making speed and result does not have harsh requirement, and DC line fault often relies on the other configuring direct current circuit of protection in current conversion station
Longitudinal differential protection interoperation.In flexible direct current power network, each change of current distance between sites farther out, consider the place of DC line construction
And cost, using overhead transmission line scheme.After meeting the requirement of direct current network operational reliability, it is necessary to shorten DC line fault
Protect fault logic to differentiate and the time of action outlet, if transient fault occurs for DC line, ensureing that failure is eliminated it
Continue to recover the operation of this circuit afterwards；If permanent fault occurs for DC line, in accurate Judging fault feature and act out
After mouthful, this DC line is cut off, it is ensured that the normal operation of direct current network other elements and equipment.
Different from AC circuit breaker, for dc circuit breaker due to the use of power electronic devices, itself contains control device.
And send trip signal to the control device of dc circuit breaker after DC line protection tripping operation, then be controlled by it device and issue directly
Breaker body is flowed, whole process adds delay, adds the time of DC line fault excision on the whole.Straight-flow system is
Low inertia system, the fault current after its failure rises quickly, and fault clearing time is directly connected to whole direct current transportation
The operation of system and the safety of power electronic devices.Therefore, it is necessary to the control for developing a kind of mixed topology dc circuit breaker is protected
Protecting system, DC line fault can be faster cut off, ensure stabilization, the safe operation of straight-flow system.
Utility model content
The purpose of this utility model is, for prior art deficiency, to provide a kind of control of mixed topology dc circuit breaker
Protection system.The device can reliably, quickly send trip signal to dc circuit breaker, so as to quick disengagement failure line
Road, ensure the stable operation of straight-flow system.
In order to reach above-mentioned purpose, the technical solution adopted in the utility model is：
A kind of Control protection system of mixed topology dc circuit breaker, it is characterised in that described breaker control protection
System includes top level control protection device BCP and lower floor dc circuit breaker IGBT interface arrangements BDM, the protection of described top level control
Device BCP includes dc circuit breaker body control function module, dc circuit breaker main body protection functional module, and DC line is protected
Protective function module, by dc circuit breaker body control function module, dc circuit breaker main body protection functional module and the direct current
Route protection function module design is in same board or separately designs in single board.
The Control protection system of above-mentioned a kind of mixed topology dc circuit breaker, it is characterised in that the BCP devices issue
After control or protection signal, communicated and triggered by IGBT device in BDM devices and dc circuit breaker, while BCP devices monitoring fortune
In row and operating process, whether dc circuit breaker has exception, completes the control to dc circuit breaker and defencive function.
A kind of Control protection system of above-mentioned mixed topology dc circuit breaker, it is characterised in that the dc circuit breaker
Body control function includes but is not limited to dc circuit breaker division control function, communication function, analog quantity and switch acquisition work(
Energy, the switching of dc circuit breaker reclosing, redundant system.
A kind of Control protection system of above-mentioned mixed topology dc circuit breaker, it is characterised in that the dc circuit breaker
Main body protection function includes but is not limited to the protection of dc circuit breaker body device, main branch submodule block protection, transfer branch road submodule
Block, mechanical switch, protection of arrester, control system redundancy lose protection, protection system redundancy loses protection, Measurement redundancy is lost
Protection, water-cooling system protection, uninterruptible power protection, dc circuit breaker overcurrent protection.
The Control protection system of above-mentioned a kind of mixed topology dc circuit breaker, it is characterised in that the DC line is protected
Protective function includes but is not limited to traveling-wave protection, under-voltage differential protection appts, DC line longitudinal difference protection, DC line is under-voltage excessively stream are protected
Shield, DC line overcurrent protection, DC line impedance protection, DC line under-voltage protection, DC line overvoltage protection, friendship
Direct current short is protected.
The Control protection system of above-mentioned a kind of mixed topology dc circuit breaker, it is characterised in that if mixed DC breaks
Interface quantity needed for the device of road is less, and BCP devices and BDM devices can also centralized configurations.
The Control protection system of above-mentioned a kind of mixed topology dc circuit breaker, it is characterised in that the device can use double
Change or full duplication configuration mode again.
After such scheme, the beneficial effects of the utility model are：
(1) Control protection system of a kind of mixed topology dc circuit breaker provided by the utility model, DC line is reduced
Delay between protection and dc circuit breaker action, fast and reliable excision line fault；
(2) DC line protection and dc circuit breaker control system be in device internal communication, add between the two can
By property, reduce due to system exception caused by communicative reasons.
(3) make system architecture compact designed, reduce system configuration resource, make simple system, reduce cost.
Brief description of the drawings
Fig. 1 is the dipolar configuration DC transmission system containing dc circuit breaker；
Fig. 2 is the symmetrical monopolar structure DC transmission system containing dc circuit breaker；
Fig. 3 is the Control protection system schematic diagram of the utility model mixed topology dc circuit breaker.
Fig. 4 is mixed type dc circuit breaker typical structure
Embodiment
Below with reference to drawings and the specific embodiments, the technical solution of the utility model is described in detail.
The utility model provides a kind of Control protection system of mixed topology dc circuit breaker, can reliably, quickly move
Make dc circuit breaker, reach the purpose of quick excision DC line fault.
Fig. 1 and Fig. 2 is application of the dc circuit breaker in dipolar configuration and monopolar configuration DC transmission system.When configuration is straight
, it is necessary to configure breaker control protection device accordingly after stream breaker.
Fig. 3 is the Control protection system schematic diagram of the utility model mixed topology dc circuit breaker.The utility model proposes
A kind of mixed topology dc circuit breaker Control protection system, described breaker control protection system include top level control guarantor
Protection unit BCP and lower floor dc circuit breaker IGBT interface arrangements BDM.Described top level control protection device BCP breaks including direct current
Road device body control function module, dc circuit breaker main body protection functional module, and DC line protection functional module.AC line
Road protection does not configure single device in addition.The dc circuit breaker body control function module, dc circuit breaker body are protected
Protective function module and DC line protection function module design in same board or are separately designed in single board.It can subtract
The quantity of few device, it is cost-effective, while reduce and communicate between device, enhance the reliability of system.The device is applied to
In DC transmission system containing dc circuit breaker shown in Fig. 1 and Fig. 2.
Dc circuit breaker Control protection system shown in Fig. 3, detect that transmission system shown in Fig. 1 or Fig. 2 is sent out in the device
After raw DC line fault, DC line protection logical calculated and judgement, reach protection act after action definite value, broken by direct current
Road device body control function module is controlled to dc circuit breaker division.As shown in figure 4, BCP devices issue control or protection
After signal, communicated and triggered by IGBT device in BDM devices and dc circuit breaker, while the monitoring of BCP devices runs and operated
Whether Cheng Zhong, dc circuit breaker have exception, complete the control to dc circuit breaker and defencive function.System provided by the utility model
System, different boards or the same plate that DC line protection function is present in same device from dc circuit breaker body control function
Block, the communication modes between board or in board, compared to optical fiber or cable in outside transmission means, faster, reliability is more for speed
It is high.
The control protective unit of the double sets of duplicate system retrofit as shown in Figure 3, i.e. configuration；In addition, it can be matched somebody with somebody using full duplication
Mode is put, i.e., is often covered in control protective unit, protection module passes through two moulds by the way of " protection module+starting module "
When block judges that the protection correctly acts, protection exit action dc circuit breaker.
The utility model breaks through the concept that traditional control protection separately designs with executing agency, with reference to dc circuit breaker
Particularity, DC line protection is integrated in the control protective unit of dc circuit breaker, forms brand-new dc circuit breaker control
Protection device processed, had both met the control protection demand of dc circuit breaker, and DC line protection is followed into DC line site
Configuration, obtains above-mentioned beneficial effect.
Above example is only to illustrate technological thought of the present utility model, it is impossible to limits protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme, each fall within this reality
Within the scope of novel protected.
Claims (1)
- A kind of 1. Control protection system of mixed topology dc circuit breaker, it is characterised in that described breaker control protection system System includes top level control protection device BCP and lower floor dc circuit breaker IGBT interface arrangements BDM, described top level control protection dress Putting BCP includes dc circuit breaker body control function module, dc circuit breaker main body protection functional module and DC line protection Functional module, dc circuit breaker body control function module, dc circuit breaker main body protection functional module and the DC line The design of defencive function module is in same board or separately designs in single board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721015839.8U CN207166130U (en) | 2017-08-15 | 2017-08-15 | A kind of Control protection system of mixed topology dc circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721015839.8U CN207166130U (en) | 2017-08-15 | 2017-08-15 | A kind of Control protection system of mixed topology dc circuit breaker |
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| Publication Number | Publication Date |
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| CN207166130U true CN207166130U (en) | 2018-03-30 |
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| CN201721015839.8U Active CN207166130U (en) | 2017-08-15 | 2017-08-15 | A kind of Control protection system of mixed topology dc circuit breaker |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294073A (en) * | 2017-08-15 | 2017-10-24 | 南京南瑞继保电气有限公司 | A kind of Control protection system of mixed topology dc circuit breaker |
| CN110783902A (en) * | 2019-10-22 | 2020-02-11 | 南方电网科学研究院有限责任公司 | Line fault detection method, device and medium for multi-terminal direct current transmission system |
-
2017
- 2017-08-15 CN CN201721015839.8U patent/CN207166130U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294073A (en) * | 2017-08-15 | 2017-10-24 | 南京南瑞继保电气有限公司 | A kind of Control protection system of mixed topology dc circuit breaker |
| CN107294073B (en) * | 2017-08-15 | 2021-02-09 | 南京南瑞继保电气有限公司 | Control protection system of hybrid topology direct current circuit breaker |
| CN110783902A (en) * | 2019-10-22 | 2020-02-11 | 南方电网科学研究院有限责任公司 | Line fault detection method, device and medium for multi-terminal direct current transmission system |
| CN110783902B (en) * | 2019-10-22 | 2021-07-30 | 南方电网科学研究院有限责任公司 | Line fault detection method, device and medium for multi-terminal direct current transmission system |
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