CN104616125B - The computational methods that a kind of analysis grounding mode influences on distribution network reliability - Google Patents
The computational methods that a kind of analysis grounding mode influences on distribution network reliability Download PDFInfo
- Publication number
- CN104616125B CN104616125B CN201510103829.9A CN201510103829A CN104616125B CN 104616125 B CN104616125 B CN 104616125B CN 201510103829 A CN201510103829 A CN 201510103829A CN 104616125 B CN104616125 B CN 104616125B
- Authority
- CN
- China
- Prior art keywords
- user
- power supply
- annual
- reliability
- long time
- 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
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The computational methods that a kind of analysis grounding mode influences on distribution network reliability, belong to system for distribution network of power power supply reliability analysis field.It is characterized in that：Comprise the following steps：Step a, count the related data of each earthing mode singlephase earth fault situation, the factor of analyzing influence power supply reliability；Step b, the mathematical modeling of each evaluation index of power supply reliability is established, calculate each evaluation index of power supply reliability；Step c, calculate the score of the power supply reliability index under each earthing mode and determine the weight of indices；Step d, according to power supply reliability Rating Model, calculate the power supply reliability score of each earthing mode；Step e, compare and determine reliability preferably earthing mode.The computational methods that the analysis grounding mode carried herein influences on distribution network reliability, power supply reliability items evaluation index is considered, and overhead transmission line and cable run power distribution network can be applied to simultaneously, com-parison and analysis is comprehensive, and result of calculation is relatively accurate.
Description
Technical field
The computational methods that a kind of analysis grounding mode influences on distribution network reliability, belong to system for distribution network of power confession
Electric fail-safe analysis field.
Background technology
So-called Reliability of Power Supplying Net Work, refer within a certain statistics phase, power network continues measuring to client's power supply capacity, is
One important indicator of power supply quality.With the development of economy and society, living standards of the people raising and electrical equipment it is extensive
Popularization, requirement of the user to power system power supply reliability also more and more higher.Neutral grounding mode is close with power supply reliability
It is related.At present qualitative analysis and field operation experiences are predominantly stayed in for influence of the neutral grounding mode to power supply reliability
On, lack quantitative analysis and calculating.
Document《Medium voltage distribution network neutral grounding mode Research of Decision》Can to power supply on neutral grounding mode
By in the impact analysis of property, only establishing the line tripping rate under different earthing modes, (have a power failure tripping operation and long time electric supply failure in short-term
Trip sum) model, have ignored the tripping operation that has a power failure in short-term has completely different influence with long time electric supply failure tripping operation.In addition, power supply can
Only it can not be evaluated by property by trip-out rate.Document《Influence of the neutral grounding mode to distribution network reliability》Mainly for electricity
Cable road power distribution network, only establishes trip-out rate model, and the Reliability Evaluation index of selection lacks delivery for expectation.Document
《The synthesis choosing method of medium voltage network earthing mode》It is to consider power supply reliability, personal safety, equipment safety, insulation water
The factors such as flat, overvoltage, relay protection, Communication Jamming, System Development planning, and each factor respective weights are given respectively, carry out
The contrast selection of earthing mode, to earthing mode, how power supply reliability does not make labor and modeling.
The content of the invention
The technical problem to be solved in the present invention is：Overcome the deficiencies in the prior art, there is provided it is each to consider power supply reliability
Item evaluation index, and a kind of analysis grounding mode of overhead line and cable run power distribution network can be applied to simultaneously to power distribution network power supply
The computational methods of reliability effect.
The technical solution adopted for the present invention to solve the technical problems is：The analysis grounding mode is powered reliable to power distribution network
Property influence computational methods, it is characterised in that：Comprise the following steps：
Step a, counts the related data of each earthing mode singlephase earth fault situation, analyzing influence power supply reliability because
Element；
Step b, calculate each evaluation index of power supply reliability；
According to the mathematical modeling of each evaluation index of power supply reliability, each evaluation index of power supply reliability is calculated；
Step c, calculate the power supply reliability index score under each earthing mode and determine the weight of indices；
According to power supply reliability index score formula, the score of each power supply reliability index is calculated, and determines that each power supply can
By the weight of property index；
Calculate the score T of the power supply reliability index under each earthing mode1、T2、T3, T1、T2、T3Respectively user's annual
The score of long time electric supply failure number, user's annual long time electric supply failure time, user's annual frequency of power cut in short-term；
μ1、μ2、μ3User's annual long time electric supply failure number, user's annual long time electric supply failure time, user Nian Ping are represented respectively
The weight of frequency of power cut in short-term；
Step d, calculate the power supply reliability score under different earthing modes；
According to power supply reliability Rating Model formula, the power supply reliability score under different earthing modes is calculated；
Step e, compare and determine reliability preferably earthing mode；
Each earthing mode power supply reliability score calculated is compared, the less ground connection side of power supply reliability score
Formula power supply reliability is more excellent.
Preferably, the mathematical modeling of each evaluation index of power supply reliability described in step b, including when user's annual is long
The Reliability Evaluation of frequency of power cut, user's annual long time electric supply failure time and user's annual in short-term including frequency of power cut refers to
Target mathematical modeling.
Preferably, it is characterised in that：
The mathematical modeling of described user's annual long time electric supply failure number is：
The mathematical modeling of described user's annual long time electric supply failure time is：
The mathematical modeling of described user's annual frequency of power cut in short-term is：
Wherein：L is circuit i length；N is to be evenly distributed total number of users on circuit；λ is singlephase earth fault rate；η is
The ratio of permanent singlephase earth fault；χ is the online repair rate of permanent fault；T is the average power off time of single failure；N0For
The average customer interrupted number of single failure；e1、e2Respectively circuit i singlephase earth faults Overvoltage and fire incident extension is led
The probability for causing All other routes to have a power failure；
Wherein, when low resistance grounding mode does not allow the reclosing to put into, α=0, β=1, ω=0, γ=0；Small resistor connects
When ground mode allows the reclosing to put into, α=1, β=0, ω=1, γ=0；Automatic route selection device route selection under resonance neutral grounding
When, α=1, β=0, ω=0, γ=0；When resonance neutral grounding manually draws the road to realize route selection, if average examination draws n bars circuit can be complete
Into a route selection, now α=1, β=0, ω=0, γ=n.
Preferably, the power supply reliability index score formula described in step c is respectively：
Wherein, Ti1For earthing mode i user's annual long time electric supply failure number score；RiFor earthing mode i user's year
Average long time electric supply failure number；It is averaged for user's annual long time electric supply failure number under m kind earthing modes to be compared
Value, Ti1A constant between (0,100m)；
Wherein, Ti2For earthing mode i user's annual long time electric supply failure time score；AiFor earthing mode i user's year
The average long time electric supply failure time；It is averaged the annual long time electric supply failure time for the user under m kind earthing modes to be compared
Value, Ti2A constant between (0,100m)；
Wherein, Ti3For earthing mode i user's annual frequency of power cut score in short-term；PiFor earthing mode i user's year
Average frequency of power cut in short-term；For user's annual under m kind earthing modes to be compared, frequency of power cut is averaged in short-term
Value, Ti3A constant between (0,100m).
Preferably, the power supply reliability Rating Model formula described in step d is：
F=μ1T1+μ2T2+μ3T3
Wherein：T1、T2、T3Corresponding user Nian Ping in each power supply reliability index score respectively described in step c
The score of equal long time electric supply failure number, user's annual long time electric supply failure time, user's annual frequency of power cut in short-term；μ1、μ2、μ3Point
Corresponding user's annual long time electric supply failure number, user in the weight of each power supply reliability index that Wei be described in step c
The weight of annual long time electric supply failure time, user's annual frequency of power cut in short-term.
Compared with prior art, beneficial effect possessed by the present invention is：
The computational methods that the analysis grounding mode of the present invention influences on distribution network reliability, establish an energy simultaneously
Mathematics computing model suitable for the reflection earthing mode of overhead line and cable run power distribution network to effected reliably of powering, is established
The mathematical modeling of one earthing mode power supply reliability contrast for considering power supply reliability items evaluation index.This method is real
The quantitative calculating and contrast that existing earthing mode influences on power supply reliability, consideration is more comprehensive, and result of calculation compares calibrated
Really.In terms of power supply reliability, it can select to provide more effective data supporting for Grounding Mode of Distribution Network.
Brief description of the drawings
Fig. 1 is the computational methods flow chart that analysis grounding mode influences on distribution network reliability.
Embodiment
Fig. 1 is highly preferred embodiment of the present invention, and 1 the present invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, the computational methods that a kind of analysis grounding mode influences on distribution network reliability, including following step
Suddenly：
Step a, counts the related data of each earthing mode singlephase earth fault situation, analyzing influence power supply reliability because
Element；
According to each earthing mode one-way earth fault situation, analysis neutral grounding mode influence power supply reliability because
Element.Influence of the neutral grounding mode to power supply reliability, the long time electric supply failure being mainly reflected in during to singlephase earth fault and short
When the influence that has a power failure.The reason for circuit i singlephase earth faults cause long time electric supply failure mainly has two：Circuit i has a power failure, circuit i is mono-
The extension of phase earth fault causes All other routes to have a power failure.Wherein failure extension includes Overvoltage extension and electric arc fire incident expands
Exhibition.Under different earthing modes, the number and power off time of long time electric supply failure are not quite similar.
Earthing mode is mainly reflected in frequency of power cut in short-term to the influence having a power failure in short-term.Further analysis, it is main because
Element is singlephase earth fault rate (number of singlephase earth fault occurs every year for every kilometer of circuit and equipment), wherein instantaneity and forever
Ratio shared by long property singlephase earth fault, singlephase earth fault extension cause the probability that All other routes have a power failure, and have a power failure in short-term secondary
Number, long time electric supply failure number and time span.
Step b, according to the mathematical modeling of each evaluation index of power supply reliability, calculate each evaluation index of power supply reliability；
Using transformer station outlet i as research object, if circuit i length is L, it is N to be evenly distributed total number of users；Its is single-phase to connect
Earth fault rate is λ, wherein the ratio of permanent singlephase earth fault is η；The online repair rate of permanent fault is χ；Single failure
Average power off time is t；The average customer interrupted number of single failure is N0；If circuit i singlephase earth faults Overvoltage and fire
The probability that the extension of calamity accident causes All other routes to have a power failure is respectively e1、e2.It will be corresponded under different earthing modes above different
Numerical value, each value establishes the mathematical modeling of each index of power supply reliability more than：
User's annual long time electric supply failure number：
User's annual long time electric supply failure time：
User's annual frequency of power cut in short-term：
Wherein, when low resistance grounding mode does not allow the reclosing to put into, α=0, β=1, ω=0, γ=0；Small resistor connects
When ground mode allows the reclosing to put into, α=1, β=0, ω=1, γ=0；Automatic route selection device route selection under resonance neutral grounding
When, α=1, β=0, ω=0, γ=0；When resonance neutral grounding manually draws the road to realize route selection, if average examination draws n bars circuit can be complete
Into a route selection, now α=1, β=0, ω=0, γ=n.
After the Mathematical Models of each index of power supply reliability are completed, under different earthing modes, bring into corresponding
Parameter be powered the calculating of each index of reliability.
Step c, calculate the score of the power supply reliability index under each earthing mode and determine the weight of indices；
Calculate the score T of the power supply reliability index under each earthing mode1、T2、T3, T1、T2、T3Respectively user's annual
The score of long time electric supply failure number, user's annual long time electric supply failure time, user's annual frequency of power cut in short-term；
Wherein, Ti1For earthing mode i user's annual long time electric supply failure number score；RiFor earthing mode i user's year
Average long time electric supply failure number；It is averaged for user's annual long time electric supply failure number under m kind earthing modes to be compared
Value, Ti1A constant between (0,100m)；
Wherein, Ti2For earthing mode i user's annual long time electric supply failure time score；AiFor earthing mode i user's year
The average long time electric supply failure time；It is averaged the annual long time electric supply failure time for the user under m kind earthing modes to be compared
Value, Ti2A constant between (0,100m)；
Wherein, Ti3For earthing mode i user's annual frequency of power cut score in short-term；PiFor earthing mode i user's year
Average frequency of power cut in short-term；For user's annual under m kind earthing modes to be compared, frequency of power cut is averaged in short-term
Value, Ti3A constant between (0,100m).
User's annual long time electric supply failure number, user's annual long time electric supply failure time and user's annual have a power failure secondary in short-term
Several weights use μ respectively1、μ2、μ3Represent, can be according to being actually needed carry out Rational choice.
Step d, according to power supply reliability Rating Model, calculate the power supply reliability score of each earthing mode；
Power supply reliability Rating Model is：
F=μ1T1+μ2T2+μ3T3
Wherein：T1、T2、T3Corresponding user's annual long time electric supply failure number, user's annual long time electric supply failure time, Yong Hunian
The score of average frequency of power cut in short-term；μ1、μ2、μ3Respectively user's annual long time electric supply failure number, user's annual long time electric supply failure
The weight of time, user's annual frequency of power cut in short-term, can be according to being actually needed carry out Rational choice.
Step e, compare and determine reliability preferably earthing mode；
Each earthing mode power supply reliability score F calculated is compared, the less earthing mode power supply of F values is reliable
Property is more excellent.
By taking certain power supply administration as an example, according to the data in the power supply administration, overhead transmission line i singlephase earth fault rate for λ=
1.388, under low resistance grounding mode, the ratio of failure is η in permanent singlephase earth faultoR=0.1.Passed through according to medium voltage distribution network
Test：After its power network neutral point uses tunable arc suppression coil, earth-free mode is used compared with it, it is female using instantaneous short circuit Earth Phase
When the method extinguishing arc of line, route selection, long time electric supply failure number caused by earth fault (i.e. permanent singlephase earth fault) reduces 50%
More than.In addition, knowing through inspection information, the permanent singlephase earth fault under earth-free mode can be approximate with low resistance grounding mode
To be consistent, therefore the permanent singlephase earth fault rate under resonance neutral grounding can be approximately considered as under low resistance grounding mode
50%, the ratio of permanent fault in the singlephase earth fault under resonance neutral grounding can be set as ηoL=0.05；
For small resistance grounding system, each failure has a power failure immediately, and power off time is trouble shooting time (based on 3 hours)
With fault correction time (based on 4 hours) sum (totally 7 hours), i.e. toR=7h；For resonant earthed system, can operate with failure
2 hours, its power off time was lookup time (based on 1 hour) and fault correction time (based on 4 hours) sum (totally 5 hours),
That is toL=5h.
If length is that L circuits i number of users is N, in practice, overhead transmission line is generally suburban line, considers branch
Line and distribution transformer protection, but do not consider that distribution automation system supplies from turn, therefore set small resistance grounding system and stop every time
Electric number of users is NoR=0.5N, it is contemplated that under resonance neutral grounding, have the powered turn of confession of time enough progress user, averagely stop
Electric number of users can be considerably less than small resistance grounding system, take NoL=0.25N.Other data are 0.
Meanwhile understand that On-line Fault repair rate is χ under resonance neutral grounding according to power supply office dataoL=0.2, single-phase earthing
The probability that the extension of fault overvoltage accident causes All other routes to have a power failure is eoL1=0.01.
Therefore the power supply reliability index under low resistance grounding mode and resonance neutral grounding can be tried to achieve：
(1) under low resistance grounding mode (permission reclosing)：
Frequency of power cut (secondary/a) when user caused by circuit i singlephase earth faults is older：
User's year power off time caused by circuit i singlephase earth faults (when/a)：
Frequency of power cut (secondary/a) in short-term of user's year caused by circuit i singlephase earth faults：
(2) under resonance neutral grounding：
User's year frequency of power cut (secondary/a) caused by circuit i singlephase earth faults：
User's year power off time caused by circuit i singlephase earth faults (when/a)：
It is artificial to draw road to realize route selection.If every bus averagely has 10 outlets, it is contemplated that utilizes each line fault probability etc.
Heuristics, each failure averagely need to draw road 4 times, i.e. n=4.
Frequency of power cut (secondary/a) in short-term of user's year caused by circuit i singlephase earth faults：
And then user's annual long time electric supply failure number under low resistance grounding mode and resonance neutral grounding can be tried to achieve, used
The score of family annual long time electric supply failure time, user's annual frequency of power cut in short-term：T1、T2、T3
(1) low resistance grounding mode：
(2) resonance neutral grounding
If μ1=0.3, μ2=0.3, μ3=0.4, i.e., under low resistance grounding mode：
FR=0.3 × 166.5+0.3 × 174.8+0.4 × 183.6=175.83
Under resonance neutral grounding：
FL=0.3 × 33.5+0.3 × 25.2+0.4 × 16.4=24.17
Understand：FL＜ FR.It may be concluded that according to the result of calculation of each index and weight set as needed,
For overhead transmission line power distribution network, the power supply reliability under resonance neutral grounding is more excellent.
Similarly, here is omitted for earthing mode comparison process in the case of other.
The above described is only a preferred embodiment of the present invention, being not the limitation for making other forms to the present invention, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But it is every without departing from technical solution of the present invention content, the technical spirit according to the present invention is to above example institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection domain of technical solution of the present invention.
Claims (5)
- A kind of 1. computational methods that analysis grounding mode influences on distribution network reliability, it is characterised in that：Including following step Suddenly：Step a, count the related data of each earthing mode singlephase earth fault situation, the factor of analyzing influence power supply reliability；Step b, calculate each evaluation index of power supply reliability；According to the mathematical modeling of each evaluation index of power supply reliability, each evaluation index of power supply reliability is calculated；Step c, calculate the power supply reliability index score under each earthing mode and determine the weight of indices；According to power supply reliability index score formula, the score of each power supply reliability index is calculated, and determines each power supply reliability The weight of index；Calculate the score T of the power supply reliability index under each earthing mode1、T2、T3, T1、T2、T3When respectively user's annual is long The score of frequency of power cut, user's annual long time electric supply failure time, user's annual frequency of power cut in short-term；μ1、μ2、μ3Represent that user's annual long time electric supply failure number, user's annual long time electric supply failure time, user's annual are short respectively When frequency of power cut weight；Step d, calculate the power supply reliability score under different earthing modes；According to power supply reliability Rating Model formula, the power supply reliability score under different earthing modes is calculated；Step e, compare and determine reliability preferably earthing mode；Each earthing mode power supply reliability score calculated is compared, the less earthing mode of power supply reliability score supplies Electric reliability is more excellent.
- 2. the computational methods that analysis grounding mode according to claim 1 influences on distribution network reliability, its feature It is：The mathematical modeling of each evaluation index of power supply reliability described in step b, including user's annual long time electric supply failure number, The mathematics of user's annual long time electric supply failure time and user's annual the Reliability Evaluation index including frequency of power cut in short-term Model.
- 3. the computational methods that analysis grounding mode according to claim 2 influences on distribution network reliability, its feature It is：The mathematical modeling of described user's annual long time electric supply failure number is：The mathematical modeling of described user's annual long time electric supply failure time is：The mathematical modeling of described user's annual frequency of power cut in short-term is：Wherein：L is circuit i length；N is to be evenly distributed total number of users on circuit；λ is singlephase earth fault rate；η is permanent The ratio of property singlephase earth fault；χ is the online repair rate of permanent fault；T is the average power off time of single failure；N0For list The average customer interrupted number of secondary failure；e1、e2Respectively circuit i singlephase earth faults Overvoltage and fire incident extension causes The probability that All other routes have a power failure；Wherein, when low resistance grounding mode does not allow the reclosing to put into, α=0, β=1, ω=0, γ=0；Low resistance grounding side When formula allows reclosing input, α=1, β=0, ω=1, γ=0；Under resonance neutral grounding during the route selection of automatic route selection device, α= 1, β=0, ω=0, γ=0；When resonance neutral grounding manually draws the road to realize route selection, if average examination draws n bars circuit to complete once Route selection, now α=1, β=0, ω=0, γ=n.
- 4. the computational methods that analysis grounding mode according to claim 1 influences on distribution network reliability, its feature It is：Power supply reliability index score formula described in step c is respectively：Wherein, Ti1For earthing mode i user's annual long time electric supply failure number score；RiFor earthing mode i user's annual Long time electric supply failure number；For user's annual long time electric supply failure number average value under m kind earthing modes to be compared, Ti1 A constant between (0,100m)；Wherein, Ti2For earthing mode i user's annual long time electric supply failure time score；AiFor earthing mode i user's annual The long time electric supply failure time；For user's annual long time electric supply failure time average under m kind earthing modes to be compared, Ti2 A constant between (0,100m)；Wherein, Ti3For earthing mode i user's annual frequency of power cut score in short-term；PiFor earthing mode i user's annual Frequency of power cut in short-term；For the frequency of power cut average value in short-term of user's annual under m kind earthing modes to be compared, Ti3 A constant between (0,100m).
- 5. the computational methods that analysis grounding mode according to claim 1 influences on distribution network reliability, its feature It is：Power supply reliability Rating Model formula described in step d is：F=μ1T1+μ2T2+μ3T3Wherein：T1、T2、T3Corresponding user's annual length in each power supply reliability index score respectively described in step c When frequency of power cut, user's annual long time electric supply failure time, the score of user's annual frequency of power cut in short-term；μ1、μ2、μ3Respectively Corresponding user's annual long time electric supply failure number, user Nian Ping in the weight of each power supply reliability index described in step c The weight of equal long time electric supply failure time, user's annual frequency of power cut in short-term.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103829.9A CN104616125B (en) | 2015-03-10 | 2015-03-10 | The computational methods that a kind of analysis grounding mode influences on distribution network reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103829.9A CN104616125B (en) | 2015-03-10 | 2015-03-10 | The computational methods that a kind of analysis grounding mode influences on distribution network reliability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104616125A CN104616125A (en) | 2015-05-13 |
| CN104616125B true CN104616125B (en) | 2018-01-02 |
Family
ID=53150560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103829.9A Expired - Fee Related CN104616125B (en) | 2015-03-10 | 2015-03-10 | The computational methods that a kind of analysis grounding mode influences on distribution network reliability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104616125B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106093682A (en) * | 2016-06-27 | 2016-11-09 | 国网天津市电力公司 | A kind of confirmation method of medium voltage distribution network neutral grounding mode |
| CN108197822B (en) * | 2018-01-24 | 2022-06-21 | 贵州电网有限责任公司 | Power distribution network fault line selection adaptability evaluation decision method |
| CN115907291B (en) * | 2022-11-11 | 2024-04-05 | 国网安徽省电力有限公司合肥供电公司 | Relay protection constant value performance evaluation method for active power distribution network |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130140237A (en) * | 2012-06-14 | 2013-12-24 | 주식회사 파워이십일 | Optimal reliability evaluation system of distribution system and the methods |
| CN103632029A (en) * | 2013-10-14 | 2014-03-12 | 深圳供电局有限公司 | Method for selecting neutral point grounding mode of medium voltage distribution network |
| CN104008509A (en) * | 2014-05-23 | 2014-08-27 | 深圳供电局有限公司 | Method and device for analysis of power supply reliability calculation |
-
2015
- 2015-03-10 CN CN201510103829.9A patent/CN104616125B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130140237A (en) * | 2012-06-14 | 2013-12-24 | 주식회사 파워이십일 | Optimal reliability evaluation system of distribution system and the methods |
| CN103632029A (en) * | 2013-10-14 | 2014-03-12 | 深圳供电局有限公司 | Method for selecting neutral point grounding mode of medium voltage distribution network |
| CN104008509A (en) * | 2014-05-23 | 2014-08-27 | 深圳供电局有限公司 | Method and device for analysis of power supply reliability calculation |
Non-Patent Citations (2)
| Title |
|---|
| "中性点接地方式对配电网可靠性影响的研究";何林;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20131215;第C042-1409页 * |
| "中性点接地方式对配电网可靠性的影响";董雷等;《电力系统保护与控制》;20130101;期刊第96-100页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104616125A (en) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Guo et al. | A critical review of cascading failure analysis and modeling of power system | |
| AU2011200306B2 (en) | Power supply monitoring system | |
| Zhao et al. | Power system fault diagnosis based on history driven differential evolution and stochastic time domain simulation | |
| CN105576660B (en) | Local distribution network in-circuit emulation analytical equipment and system | |
| CN104616125B (en) | The computational methods that a kind of analysis grounding mode influences on distribution network reliability | |
| CN108859830A (en) | A kind of power-supply management system of electric automobile charging pile intelligent power distribution and the charging pile for having the system | |
| Cebrian et al. | Hybrid method to assess sensitive process interruption costs due to faults in electric power distribution networks | |
| CN109917175A (en) | It is a kind of for high anti-back-out when overvoltage method for quick predicting | |
| CN107565561A (en) | Closed loop network load simulation method based on closed loop power flow optimization analysis | |
| CN105259480A (en) | Dispatching end small current single-phase grounding wire selection method and system | |
| CN104579867B (en) | Based on the power communication network construction process of node aggregation coefficient | |
| Vernay et al. | RTE experiences with the insertion of long EHVAC insulated cables | |
| Wawrzyniak et al. | Methodology of risk assessment and decomposition in power grid applications | |
| Shalash et al. | New reliability index for power system protection based on multi-agent technique | |
| CN109064060A (en) | A kind of excitation surge current leads to the appraisal procedure of protective relaying maloperation risk | |
| CN110556803B (en) | Direct current transmission and distribution line relay protection method based on dynamic state estimation | |
| Ghaemi et al. | Effect of Fault Current Limiter (FCL) on reliability and protection coordination of distribution system | |
| Haque et al. | Geomagnetic disturbance storm system impact—A transmission facility owner case study | |
| Xu et al. | Voltage instability detection based on the concept of short circuit capacity | |
| JUNAIDI et al. | Modelling and simulation of symmetrical and unsymmetrical faults on 14 bus IEEE-power systems | |
| Ristanovic et al. | Design and implementation of scenarios for evaluating and testing distance relays | |
| Koner et al. | SRAT-Distribution voltage sags and reliability assessment tool | |
| Vukolov et al. | Configuration management of electricity distribution grids 6-35 kV according to the criteria of reliability | |
| Chen et al. | Voltage sags frequency assessment considering the coordination of protection system | |
| Mbuli et al. | Evaluation of the impact of distributed synchronous generation on the stochastic estimation of financial costs of voltage sags |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180102 Termination date: 20190310 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |