CN110247371A - The configuration method of multi-stage vacuum breaker on a kind of power distribution network - Google Patents
The configuration method of multi-stage vacuum breaker on a kind of power distribution network Download PDFInfo
- Publication number
- CN110247371A CN110247371A CN201910362965.8A CN201910362965A CN110247371A CN 110247371 A CN110247371 A CN 110247371A CN 201910362965 A CN201910362965 A CN 201910362965A CN 110247371 A CN110247371 A CN 110247371A
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- China
- Prior art keywords
- vacuum circuit
- circuit breaker
- vacuum
- substation
- breaker
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
The configuration method of multi-stage vacuum breaker on a kind of power distribution network specifically comprises the following steps: (1), all vacuum circuit breakers on same power distribution network is carried out serial number by rank；(2), the Protection parameters calculation formula of vacuum circuit breaker, I are set in control hostN speed=[1-5%(n+1)] * IⅠ, TN speed=TⅠ- 80n, IN mistake=[1-5%(n+1)] * IⅢ, TN mistake=TⅢThe Protection parameters of corresponding vacuum circuit breaker can be obtained (3), by the calculation formula of Substation parameters and the number input control host of vacuum circuit breaker in -80n；(4), when the vacuum circuit breaker quantity on power distribution network changes, first judge rank locating for the newly-increased or vacuum circuit breaker of reduction, then modify again to the number of vacuum circuit breaker.The vacuum circuit breaker configuration method of the invention is simplified so that protection seting becomes intelligent, and the parameter for directly inputting number and substation achieves that the protection seting of all killer switches of whole route.
Description
Technical field
The present invention relates to the technical fields of vacuum circuit breaker, more specifically refer to that multi-stage vacuum is disconnected on a kind of power distribution network
The configuration method of road device.
Background technique
As power demand increasingly increases, requirement of the user to power supply quality and power supply reliability is also higher and higher, this
Just more stringent requirements are proposed to distribution network automated.For electric system, when breaker is investment and cutting electric load
Indispensable equipment: connecting and carry or cut-off the circuit for having load current when operating normally, and event occurs in electrical equipment
Abnormal circuit can be automatically cut off when barrier under the control of protective relaying device, disconnects faulty equipment.Breaker is as power train
Unite one of terminal device, play control, adjusting and protective effect, reliability and intelligent level to the stabilization of electric system and
The degree of automation will generate far-reaching influence.
According to arc-extinguishing medium difference, it is disconnected that breaker can be divided into oil-break, air-break circuit-breaker, SF6 breaker and vacuum
Road device.Wherein, it is excellent to have that connecting-disconnecting function is strong, small in size, movement is fast, pollution-free, the service life is long, the time between overhauls(TBO) is long etc. for vacuum circuit breaker
Point.Currently, vacuum circuit breaker is widely applied in China's distribution system, and with manufacturing technology and production technology
It is constantly progressive, vacuum circuit breaker will be increasingly by the favor of user.The protection of vacuum circuit breaker at different levels on one power distribution network
Setting needs the personnel of profession to set, and the quality of its protection setting, will be directly related to vacuum circuit breaker operation
Effect affects the reliability and economic benefit of power supply.
The calculating of professional's component parameters each for electric system specifically includes that
1, a reference value selects basic parameter four: reference capacity Sj, reference voltage Uj, reference current Ij, reference impedance Zj.
Relationship between them:,.Reference capacity can be generally chosen for
100MVA, reference voltage are worth on the basis of then taking the average voltages of power grids at different levels.
2, each component parameters conversion
(1) generator, in formula--- it is the subtranient reactance of generator；--- it is
Generator rated capacity, when known,--- for conversion to the power generation under reference capacity
Machine subtranient reactance per unit value.
(2) transformer
--- it is two-winding transformer short-circuit voltage percentage；
--- it is the rated capacity of transformer；
--- for conversion to the transformer reactance per unit value under reference capacity.
(3) reactor
--- it is the percentage reactance of reactor
--- it is respectively rated current, the voltage of reactor；
--- it is respectively reference capacity, voltage；
--- for the reactance per unit value of conversion to the reactor under basic parameter.
(4) route
--- it is respectively the forward-sequence reactance and resistance value of every kilometer of route；
--- it is line length (unit is kilometer)；
--- it is respectively reactance, resistance and the impedance of total track length.
Line reactance per unit value are as follows:
By a whole set of the above data and calculating, the Protection parameters of each breaker could be set.If newly-increased
Or reduce vacuum circuit breaker, then related data recalculates again, heavy workload and it is professional require it is very high.
Summary of the invention
The present invention provides a kind of configuration method of multi-stage vacuum breaker on power distribution network, is protected with solving existing vacuum circuit breaker
The calculating complexity for protecting setting is cumbersome, if newly-increased or reduce vacuum circuit breaker, the disadvantages of related data recalculates again.
The present invention adopts the following technical scheme:
The configuration method of multi-stage vacuum breaker on a kind of power distribution network, which is characterized in that specifically comprise the following steps:
(1), all vacuum circuit breakers on same power distribution network are subjected to serial number by rank；
(2), the Protection parameters calculation formula of vacuum circuit breaker is set in control host, in which: n-th vacuum circuit breaker
Quick-break electric current: IN speed=[1-5%(n+1)] * IⅠ, n < 20, IⅠFor overcurrent I sections of electric current of substation；The quick-break of n-th of vacuum circuit breaker
Time: TN speed=TⅠ- 80n, TⅠFor the overcurrent I time of substation；The mistake section electric current of n-th of vacuum circuit breaker: IN mistake=[1-5%(n+
1)] * IⅢ, n < 20, IⅢFor III section of electric current of substation's overcurrent；N-th of vacuum circuit breaker be after a time: TN mistake=TⅢ- 80n, TⅢFor
III time of substation's overcurrent；
(3), by overcurrent I sections of electric current I of substationⅠ, overcurrent I sections of time T of substationⅠ, III section of electric current I of substation's overcurrentⅢ, substation
III section of time T of overcurrentⅢAnd in the calculation formula of the number input control host of vacuum circuit breaker, it is disconnected that corresponding vacuum can be obtained
The Protection parameters of road device；
(4), when the vacuum circuit breaker quantity on power distribution network changes, first judge locating for the newly-increased or vacuum circuit breaker of reduction
Then rank again modifies to the number of vacuum circuit breaker.
The judgment criteria of above-mentioned vacuum circuit breaker rank is in the power distribution network extended from substation to user terminal, with substation
One or several nearest vacuum circuit breakers arranged side by side of one end distance are level-one vacuum circuit breaker, by level-one vacuum circuit breaker
One or several branch vacuum breakers arranged side by side that each vacuum circuit breaker is directly led out are secondary vacuum breaker, by two
One or several branch vacuum breakers arranged side by side that each vacuum circuit breaker of grade vacuum circuit breaker is directly led out are three-level
Vacuum circuit breaker, and so on.
Further, in the step (4), when some position on power distribution network increases vacuum circuit breaker newly, first judgement should
Rank locating for newly-increased vacuum circuit breaker simultaneously sets it to corresponding number on control host, identical as the rank or in should
The number of all vacuum circuit breakers before rank remains unchanged, and the number of all vacuum circuit breakers after the rank
All plus 1；
Further, directly that it is corresponding when vacuum circuit breaker is reduced in some position on power distribution network in the step (4)
Number from control host on delete, the number of remaining vacuum circuit breaker all remains unchanged.
Further, in the step (3), if the switch protection definite value in substation has variation to update, vacuum circuit breaker
Corresponding Protection parameters must also update.
By the above-mentioned description to structure of the invention it is found that compared to the prior art, the present invention has the advantage that the invention
Vacuum circuit breaker configuration method, by the way that killer switch is numbered, and control host in be set with vacuum circuit breaker
The Protection parameters calculation formula of device is simplified so that protection seting becomes intelligent, directly inputs the parameter of number and substation
Achieve that the protection seting of all killer switches of whole route.And when killer switch quantity changes, judgement is new
Rank locating for the vacuum circuit breaker of increasing or reduction, modifies to the number of vacuum circuit breaker, and in input control host
Obtain corresponding protection seting, without mass data and formula to calculating can on complete distribution network line killer switch setting,
It is that industry important breakthrough and technology are leapt.
Detailed description of the invention
Fig. 1 is the number schematic diagram of vacuum circuit breaker of the present invention.
Specific embodiment
Illustrate a specific embodiment of the invention with reference to the accompanying drawings.
Embodiment one
The configuration method of multi-stage vacuum breaker, includes the following steps: on a kind of power distribution network
(1), all vacuum circuit breakers on same power distribution network are subjected to serial number by rank；Referring to Fig.1, vacuum of the present invention
The judgment criteria of breaker rank is in the power distribution network extended from substation A to user terminal, nearest with the one end substation A distance
One or several vacuum circuit breakers arranged side by side are level-one vacuum circuit breaker, number 001；By each of level-one vacuum circuit breaker
One or several branch vacuum breakers arranged side by side that vacuum circuit breaker 001 is directly led out are secondary vacuum breaker, number
It is 002；One or several branch vacuums arranged side by side directly led out by each vacuum circuit breaker 002 of secondary vacuum breaker
Breaker be three-level vacuum circuit breaker, number 003, and so on.
(2), the Protection parameters calculation formula of vacuum circuit breaker is set in control host, in which: n-th of vacuum circuit breaker
The quick-break electric current of device: IN speed=[1-5%(n+1)] * IⅠ, n < 20, IⅠFor overcurrent I sections of electric current of substation；N-th vacuum circuit breaker
The quick-break time: TN speed=TⅠ- 80n, TⅠFor the overcurrent I time of substation；The mistake section electric current of n-th of vacuum circuit breaker: IN mistake=[1-5%
(n+1)] * IⅢ, n < 20, IⅢFor III section of electric current of substation's overcurrent；N-th of vacuum circuit breaker be after a time: TN mistake=TⅢ- 80n,
TⅢFor III time of substation's overcurrent；
(3), by overcurrent I sections of electric current I of substationⅠ, overcurrent I sections of time T of substationⅠ, III section of electric current I of substation's overcurrentⅢ, substation
III section of time T of overcurrentⅢAnd in the calculation formula of the number input control host of vacuum circuit breaker, it is disconnected that corresponding vacuum can be obtained
The Protection parameters of road device；If switch protection definite value has variation to update in substation, the vacuum circuit breaker that please timely update is corresponding
Protection parameters.
(4), when some position on power distribution network increases vacuum circuit breaker newly, first judge the newly-increased vacuum circuit breaker institute department level
Corresponding number and on control host is not set it to, identical as the rank or before the rank all vacuum are disconnected
The number of road device remains unchanged, and the number of all vacuum circuit breakers after the rank all adds 1；
Embodiment two
The configuration method of multi-stage vacuum breaker, includes the following steps: on a kind of power distribution network
(1), all vacuum circuit breakers on same power distribution network are subjected to serial number by rank；Referring to Fig.1, vacuum of the present invention
The judgment criteria of breaker rank is in the power distribution network extended from substation A to user terminal, nearest with the one end substation A distance
One or several vacuum circuit breakers arranged side by side are level-one vacuum circuit breaker, number 001；By each of level-one vacuum circuit breaker
One or several branch vacuum breakers arranged side by side that vacuum circuit breaker is directly led out are secondary vacuum breaker, and number is
002；One or several branch vacuums arranged side by side open circuit directly led out by each vacuum circuit breaker of secondary vacuum breaker
Device be three-level vacuum circuit breaker, number 003, and so on.
(2), the Protection parameters calculation formula of vacuum circuit breaker is set in control host, in which: n-th of vacuum circuit breaker
The quick-break electric current of device: IN speed=[1-5%(n+1)] * IⅠ, n < 20, IⅠFor overcurrent I sections of electric current of substation；N-th vacuum circuit breaker
The quick-break time: TN speed=TⅠ- 80n, TⅠFor the overcurrent I time of substation；The mistake section electric current of n-th of vacuum circuit breaker: IN mistake=[1-5%
(n+1)] * IⅢ, n < 20, IⅢFor III section of electric current of substation's overcurrent；N-th of vacuum circuit breaker be after a time: TN mistake=TⅢ- 80n,
TⅢFor III time of substation's overcurrent；
(3), by overcurrent I sections of electric current I of substationⅠ, overcurrent I sections of time T of substationⅠ, III section of electric current I of substation's overcurrentⅢ, substation
III section of time T of overcurrentⅢAnd in the calculation formula of the number input control host of vacuum circuit breaker, it is disconnected that corresponding vacuum can be obtained
The Protection parameters of road device；
(4), when vacuum circuit breaker is reduced in some position on power distribution network, directly its corresponding number is deleted from control host
It removes, the number of remaining vacuum circuit breaker all remains unchanged.
The above is only a specific embodiment of the present invention, but the design concept of the present invention is not limited to this, all to utilize this
Design makes a non-material change to the present invention, and should all belong to behavior that violates the scope of protection of the present invention.
Claims (5)
1. the configuration method of multi-stage vacuum breaker on a kind of power distribution network, which is characterized in that specifically comprise the following steps:
(1), all vacuum circuit breakers on same power distribution network are subjected to serial number by rank；
(2), the Protection parameters calculation formula of vacuum circuit breaker is set in control host, in which: n-th vacuum circuit breaker
Quick-break electric current: IN speed=[1-5%(n+1)] * IⅠ, n < 20, IⅠFor overcurrent I sections of electric current of substation；The quick-break of n-th of vacuum circuit breaker
Time: TN speed=TⅠ- 80n, TⅠFor the overcurrent I time of substation；The mistake section electric current of n-th of vacuum circuit breaker: IN mistake=[1-5%(n+
1)] * IⅢ, n < 20, IⅢFor III section of electric current of substation's overcurrent；N-th of vacuum circuit breaker be after a time: TN mistake=TⅢ- 80n, TⅢFor
III time of substation's overcurrent；
(3), by overcurrent I sections of electric current I of substationⅠ, overcurrent I sections of time T of substationⅠ, III section of electric current I of substation's overcurrentⅢ, substation
III section of time T of overcurrentⅢAnd in the calculation formula of the number input control host of vacuum circuit breaker, it is disconnected that corresponding vacuum can be obtained
The Protection parameters of road device；
(4), when the vacuum circuit breaker quantity on power distribution network changes, first judge locating for the newly-increased or vacuum circuit breaker of reduction
Then rank again modifies to the number of vacuum circuit breaker.
2. the configuration method of multi-stage vacuum breaker on a kind of power distribution network as described in claim 1, it is characterised in that: described true
The judgment criteria of empty breaker rank is in the power distribution network extended from substation to user terminal, nearest with substation one end distance
One or several vacuum circuit breakers arranged side by side are level-one vacuum circuit breaker, by each vacuum circuit breaker of level-one vacuum circuit breaker
One or several branch vacuum breakers arranged side by side directly led out are secondary vacuum breaker, by secondary vacuum breaker
One or several branch vacuum breakers arranged side by side that each vacuum circuit breaker is directly led out are three-level vacuum circuit breaker, successively
Analogize.
3. the configuration method of multi-stage vacuum breaker on a kind of power distribution network as claimed in claim 2, it is characterised in that: the step
Suddenly in (4), when some position on power distribution network increases vacuum circuit breaker newly, first judge rank locating for the newly-increased vacuum circuit breaker simultaneously
Corresponding number is set it on control host, all vacuum circuit breakers identical as the rank or before the rank
Number remain unchanged, and the number of all vacuum circuit breakers after the rank all adds 1.
4. the configuration method of multi-stage vacuum breaker on a kind of power distribution network as claimed in claim 2, it is characterised in that: the step
Suddenly in (4), when vacuum circuit breaker is reduced in some position on power distribution network, directly its corresponding number is deleted from control host
It removes, the number of remaining vacuum circuit breaker all remains unchanged.
5. the configuration method of multi-stage vacuum breaker on a kind of power distribution network as described in claim 1, it is characterised in that: the step
Suddenly in (3), if the switch protection definite value in substation has variation to update, the corresponding Protection parameters of vacuum circuit breaker also must be more
Newly.
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| CN201910362965.8A CN110247371A (en) | 2019-04-30 | 2019-04-30 | The configuration method of multi-stage vacuum breaker on a kind of power distribution network |
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| CN201910362965.8A CN110247371A (en) | 2019-04-30 | 2019-04-30 | The configuration method of multi-stage vacuum breaker on a kind of power distribution network |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6185482B1 (en) * | 1998-03-10 | 2001-02-06 | Abb Power T&D Company Inc. | System and method for rms overcurrent backup function |
| CN105576622A (en) * | 2016-01-22 | 2016-05-11 | 河南理工大学 | Self-adaptive setting calculation method for single-bus mine high-voltage power grid running in multi-segment way |
| CN106998061A (en) * | 2017-03-28 | 2017-08-01 | 国网江西省电力公司电力科学研究院 | A kind of KV of single supply 10 protection three-level configuration and fixed value adjusting method |
| CN109670654A (en) * | 2019-01-09 | 2019-04-23 | 国网江西省电力有限公司电力科学研究院 | A kind of automatic identification distribution line protection rational method of definite value |
-
2019
- 2019-04-30 CN CN201910362965.8A patent/CN110247371A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6185482B1 (en) * | 1998-03-10 | 2001-02-06 | Abb Power T&D Company Inc. | System and method for rms overcurrent backup function |
| CN105576622A (en) * | 2016-01-22 | 2016-05-11 | 河南理工大学 | Self-adaptive setting calculation method for single-bus mine high-voltage power grid running in multi-segment way |
| CN106998061A (en) * | 2017-03-28 | 2017-08-01 | 国网江西省电力公司电力科学研究院 | A kind of KV of single supply 10 protection three-level configuration and fixed value adjusting method |
| CN109670654A (en) * | 2019-01-09 | 2019-04-23 | 国网江西省电力有限公司电力科学研究院 | A kind of automatic identification distribution line protection rational method of definite value |
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Application publication date: 20190917 |
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