CN103777096A - Sensitive device immunity estimation method based on multiple sag threshold values and duration time - Google Patents
Sensitive device immunity estimation method based on multiple sag threshold values and duration time Download PDFInfo
- Publication number
- CN103777096A CN103777096A CN201410022793.7A CN201410022793A CN103777096A CN 103777096 A CN103777096 A CN 103777096A CN 201410022793 A CN201410022793 A CN 201410022793A CN 103777096 A CN103777096 A CN 103777096A
- Authority
- CN
- China
- Prior art keywords
- temporarily
- voltage
- description
- sag
- falls
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 52
- 230000036039 immunity Effects 0.000 title abstract 4
- 239000011159 matrix material Substances 0.000 claims abstract description 9
- 238000004364 calculation method Methods 0.000 claims abstract description 3
- 238000011156 evaluation Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 238000004458 analytical method Methods 0.000 abstract description 2
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Images
Abstract
The invention discloses a sensitive device immunity estimation method based on multiple sag threshold values and the duration time, and pertains to the technical field of electric energy quality analysis. Effective value calculation is performed on sag recording data to obtain a sag RMS waveform, and the time T (Uc) in the sag in which the voltage is less than or equal to the voltage amplitude Uc that can be withstood by equipment are solved to form a sequence of multiple sag threshold values and the duration time; the sag description matrix, sag description table and sag description graph of some station are formed; single sag accident estimation and sensitive device voltage sag immunity station estimation are performed; and voltage sag severity estimation is performed based on the provided severity overall indicator MMDSI. The method has the following advantages that voltage sag is described based on the multiple sag threshold values and the duration time, and through the provided novel sensitive device voltage sag immunity estimation method, problems of excessive estimation and inaccuracy with traditional methods can be solved, the severity of voltage sag can be estimated reasonably.
Description
Technical field
The invention belongs to power quality analysis technical field, particularly relate to a kind of based on many sensitive equipment immunocompetence appraisal procedures of falling temporarily threshold value and duration.
Background technology
Voltage dip refers to the quality of power supply event declining suddenly in the rms voltage short time of causing due to reasons such as short-circuit fault of power system, large-size machine startup, transformer excitation flows.
The evaluation work of voltage dip is mainly to process by recorder data is fallen in electric energy quality monitoring system temporarily, obtains that index of correlation value describes that the order of severity falls in individual event, website and system voltage temporarily and to consumer influence degree.The size of voltage dip on sensitive equipment impact, refer to the immunocompetence size of sensitive equipment to voltage dip from sensitive equipment angle, its evaluation work is mainly voltage-tolerance curve based on sensitive equipment and falls in conjunction with single temporarily that correlated characteristic falls in event, website temporarily and index judges whether sensitive equipment can be affected, draws the affected frequency.
In traditional sensitive equipment voltage dip immunocompetence appraisal procedure, voltage dip is described by temporary range of decrease value and duration.Temporarily range of decrease value refers to that the minimum voltage amplitude of falling temporarily in process accounts for the number percent of nominal voltage, and the duration refers to falls in process voltage magnitude temporarily lower than the time of falling temporarily threshold value.Traditional appraisal procedure supposes that it is square wave that temporary range of decrease value changes waveform, and in fact voltage dip is really not so, because the initial period of voltage dip and recovery stage are not instantaneous completing, what especially direct current generator startup and transformer excitation flow caused falls temporarily, and it recovers duration in stage can be very long.In other words, traditional appraisal procedure is coarse and even is inapplicable.Different sensitive equipment voltage immunocompetences are different, even the sensitive equipment of same type is because of the difference of its manufacturer, hardware, control method, its voltage immunocompetence is not identical yet, and it is also the inapplicable major reason of traditional appraisal procedure that voltage dip describing method is not attached to concrete sensitive equipment characteristic.
Summary of the invention
The object of the present invention is to provide a kind of based on how falling temporarily threshold value and duration sensitive equipment immunocompetence appraisal procedure, bonding apparatus voltage-tolerance curve has proposed a kind of based on many novel describing methods of voltage dip that fall temporarily threshold value and duration, be intended to apply to equipment immunocompetence assessment upper, excessively assess to solve classic method, coarse problem.In website evaluation method, propose website and fallen temporarily the concept of description figure, and proposed the order of severity overall target based on the novel description of voltage dip, the order of severity that can reasonable assessment voltage dip.Concrete steps are as follows:
Step 1: carry out root-mean-square value and calculate and fall temporarily RMS waveform falling temporarily recorder data.Ask and fall temporarily middle voltage and be less than or equal to the tolerant voltage magnitude U of equipment
ctime T (U
c).And then sequence T (0.9), T (0.9-h), the T (0.9-2h) of threshold value and duration fall in formation temporarily more than one ... T (0.1) wherein T is the time, and unit is ms.
Step 2: the arbitrary event 1≤s that falls temporarily in event falls in certain monitoring for certain website month (certain season, certain year) n temporarily
i≤ n, adopts T
i(0.9), T
i(0.9-h), T
i(0.9-2h) ... T
i(0.1) be described, formation is fallen temporarily Description Matrix, is fallen description list and fall temporarily description figure temporarily.
Step 3: voltage dip Severity: description figure falls in website temporarily that adopt step 2 to produce, in conjunction with voltage dip seriousness index, falls temporarily the seriousness overall target MMDSI of description based on novel voltage, the order of severity of assessment voltage dip comprises:
(1) the single event of falling is temporarily assessed.The sequence that adopts step 1 to produce, in conjunction with sensitive equipment voltage-tolerance curve bound form or mean value form, assessment sensitive equipment voltage dip immunocompetence.
(2) sensitive equipment voltage dip immunocompetence website evaluation.Description figure falls in website temporarily that adopt step 2 to produce, in conjunction with sensitive equipment voltage-tolerance curve bound form or mean value form, and assessment sensitive equipment voltage dip immunocompetence.
(3) voltage dip Severity.Description figure falls in website temporarily that adopt step 2 to produce, in conjunction with voltage dip seriousness index, falls temporarily the seriousness overall target MMDSI of description based on novel voltage, the order of severity of assessment voltage dip.
Technical scheme process flow diagram is as Fig. 1.
In step 1, ask and fall temporarily middle voltage and be less than or equal to U
ctime T (U
c) process be:
Fall temporarily s and can be described as the function of a voltage about the time: U=s (t) or t=s
-1(U).For the free voltage U falling temporarily in process
ccan be described as t=s
-1(U), can try to achieve two according to RMS Wave data and separate t
c1, t
c2, wherein U is voltage, is perunit value.
Definition: T (U
c)=| t
c1-t
c2|, wherein 0.1≤U
c≤ 0.9.T (U
c) refer to that falling temporarily middle voltage is less than or equal to U
ctime.
In step 1, obtaining many processes of falling temporarily the sequence of threshold value and duration is:
Because the immune voltage magnitude in the voltage-tolerance curve of equipment is generally accurate to the 2nd of radix point, the desirable 0.01-0.05p.u. of voltage spaces h.Utilize T (U
c) definition can be in the hope of how falling temporarily sequence T (0.9), T (0.9-h), the T (0.9-2h) of threshold value and duration ... T (0.1).
In step 2, falling temporarily Description Matrix forming process is:
N that monitors for certain website month (certain season, certain year) is fallen temporarily event, utilizes the many sequence computing method of falling temporarily threshold value and duration in step 1, arbitrary event s that falls temporarily that website is monitored
i(1≤s
i≤ n), can be described as T
i(0.9), T
i(0.9-h), T
i(0.9-2h) ... T
i(0.1), for more intuitive expression, can form one and fall temporarily Description Matrix, row represent temporary descending chain, and row represents a certain all descriptions of falling temporarily event:
In step 2, falling temporarily description list forming process is:
The each threshold voltage duration in Description Matrix of falling temporarily forming in statistic procedure 2 is more than or equal to the event of falling the temporarily number of certain duration, as element corresponding to form unit, as shown in the table:
In step 2, falling temporarily description figure formation method is:
To fall temporarily every a line in description list and be depicted as one take the time as horizontal ordinate, the curve that unity element is ordinate forms all collection of curves to fall temporarily description figure under the same coordinate system.
In step 3, the single case evaluating method that falls is temporarily:
In the time that sensitive equipment voltage-tolerance curve adopts mean value form as Fig. 2, for this equipment, when voltage is lower than the tolerant voltage magnitude U of equipment
cand lower than U
cduration is greater than the duration T of voltage disturbance
ctime, device fails; Otherwise this equipment is normally worked.Wherein U
cfor withstand voltage mean value; T
cfor duration mean value.Fall temporarily description according to novel voltage, appraisal procedure is as follows: if T is (U
c)>=T
c, equipment failure; If T is (U
c) < T
c, equipment is normal.
In the time that sensitive equipment voltage-tolerance curve adopts bound form as Fig. 3, if voltage is higher than U
maxand the duration is less than T
mintime, equipment is working properly; If voltage is lower than U
minand the duration is greater than T
max, equipment failure; When other situations, equipment is in uncertain region, and likely normal work is also likely broken down.Wherein U
maxfor upper voltage limit; U
minfor lower voltage limit; T
maxfor the maximum duration; T
minfor minimum duration.Fall temporarily description according to novel voltage, appraisal procedure is as follows: if T is (U
max) < T
min, equipment is normal; If T is (U
min)>=T
max, equipment failure; If T is (U
max)>=T
minand T (U
min) < T
max, equipment is in uncertain region.
In step 3, website evaluation is generally to form and describes website and fall temporarily index or the chart of information, in order to reflect the fault frequency etc. of the order of severity that website falls temporarily and the equipment of powering thereof.
In step 3, sensitive equipment voltage dip immunocompetence website evaluation method is:
In the time that evaluated sensitive equipment voltage-tolerance curve is known, while adopting mean value form, in the time falling immunocompetence website evaluation temporarily, find its voltage-tolerance curve flex point (U
avr, T
avr) at Fig. 5 website, the position in description figure falls temporarily, for example D point, and the fault frequency that this equipment causes because of voltage dip for a year is ordinate corresponding to D point, is made as y (D).
When evaluated sensitive equipment voltage-tolerance curve the unknown, while adopting bound form, find its upper limit, lower limit curve flex point (U
max, T
min), (U
min, T
max) at Fig. 5 website, the position in figure is described, for example A, B point.The quantity of falling temporarily in normal region is n-y (A), fault zone quantity is y (B), uncertain region is y (A)-y (B), the fault frequency that this equipment causes because of voltage dip for 1 year is (y (B), y (A)).
In step 3, duration seriousness index (DSI), temporarily range of decrease value seriousness index (MSI) and seriousness overall target (MDSI) can be described as:
The seriousness index production method that falls temporarily description based on novel voltage in step 3 is:
In conjunction with the concept of seriousness index, can obtain falling temporarily based on novel voltage the seriousness overall target MMDSI of description:
MMDSI=max{MDSI(0.9))，MDSI(0.9-h，))......MDSI(0.1，T(0.1))}
If MMDSI=0, can obtain T (U
max) < T
min, equipment is normal.If MMDSI=100, can obtain: T (U
min)>=T
max, equipment failure.If between MMDSI value 0-100, can obtain T (U
max)>=T
minand T (U
min) < T
max, equipment is in uncertain region, and MMDSI is larger, falls temporarily and more approaches voltage-tolerance curve lower limit, falls temporarily more serious.
The invention has the advantages that, based on how falling temporarily threshold value and the duration is described voltage dip, and and then the novel sensitive equipment voltage dip immunocompetence appraisal procedure that proposes can solve that classic method is excessively assessed, coarse problem, the order of severity of reasonable assessment voltage dip.
Accompanying drawing explanation
Fig. 1 is the technology of the present invention process flow diagram
Fig. 2 is sensitive equipment voltage-tolerance curve
Fig. 3 is sensitive equipment voltage-tolerance curve bound form and mean value form.
Fig. 4 is certain website voltage dip description list data.
Fig. 5 is certain website voltage dip description figure.
Fig. 6 is four quasi-representative sensitive equipment voltage-tolerance curve data.
Fig. 7 is the assessment result that adopts voltage-tolerance curve mean value form.
Fig. 8 is the assessment result that adopts voltage-tolerance curve bound form.
Fig. 9 is voltage dip seriousness index MDSI and the MMDSI of PC.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with China's a certain electric energy quality monitoring system voltage dip recorder data, the website evaluation method for sensitive equipment voltage dip immunocompetence proposing take the present invention is as example, to can programming in logic device (PLC), the sensitive equipment of speed adjustable device (ASD), AC relay (AC Relay), personal computer (PC) 4 quasi-representatives assesses.Should be emphasized that, following explanation is only exemplary, rather than in order to limit the scope of the invention and to apply.
Step 1: carry out root-mean-square value and calculate and fall temporarily RMS waveform falling temporarily recorder data.
Free voltage U in process falls temporarily
ccan be described as t=s
-1(U), can try to achieve two according to RMS Wave data and separate t
c1, t
c2.T (U
c)=| t
c1-t
c2| wherein 0.1≤U
c≤ 0.9.T (U
c) refer to that falling temporarily middle voltage is less than or equal to U
ctime.
Step 2: the arbitrary event 1≤s that falls temporarily in event falls in certain monitoring for certain website month (certain season, certain year) n temporarily
i≤ n, calculates respectively T
i(0.9), T
i(0.9-h), T
i(0.9-2h) ... T
i(0.1), h gets 0.05, obtains the multiple voltage dips of website and is described as many sequence T that fall temporarily threshold value and duration
i(0.9), T
i(0.9-h), T
i(0.9-2h) ... T
i(0.1), now h gets 0.05.And then statistics is fallen temporarily and is described in sequence each threshold voltage duration and be more than or equal to the event of falling the temporarily number of certain duration and obtain Fig. 4.
To fall temporarily every a line in description list and be depicted as one take the time as horizontal ordinate, the curve that unity element is ordinate forms all collection of curves to fall temporarily description figure as Fig. 5 under the same coordinate system.
Step 3:(1) single event assessment falls temporarily.The sequence that adopts step 1 to produce, in conjunction with sensitive equipment voltage-tolerance curve bound form or mean value form, assessment sensitive equipment voltage dip immunocompetence.
As Fig. 6, adopt mean value form in conjunction with the voltage-tolerance curve flex point data of evaluated equipment, find its voltage-tolerance curve flex point (U
avr, T
avr) at Fig. 5 website, the position in description figure falls temporarily, for example D point, and the fault frequency that this equipment causes because of voltage dip for a year is ordinate corresponding to D point, is made as y (D).
Analyze contrast and adopt novel voltage to fall temporarily the assessment result of describing the fault frequency causing with the voltage dip of traditional description, as shown in Figure 7.
As seen from Figure 7,4 kind equipment voltage-tolerance curve mean value forms, the fault frequency that classic method draws adopts method acquired results large than the present invention.The failure rate that classic method obtains four kind equipments than the present invention adopt method acquired results respectively high by 9.7%, 10.9%, 9.5% and 15.2%.The contrast verification of assessment result the excessively shortcoming of assessment of previously described classic method, and adopt the inventive method to carry out the feasibility of equipment voltage dip immunocompetence assessment.
(2) sensitive equipment voltage dip immunocompetence website evaluation.The website that step 2 produces falls description figure temporarily in conjunction with sensitive equipment voltage-tolerance curve bound form or mean value form assessment sensitive equipment voltage dip immunocompetence.
Adopt voltage-tolerance curve upper and lower limit shape form, find its upper limit, lower limit curve flex point (U
max, T
min), (U
min, T
max) at Fig. 5 website, the position in figure is described, for example A, B point.The quantity of falling temporarily in normal region is n-y (A), fault zone quantity is y (B), uncertain region is y (A)-y (B), the fault frequency that this equipment causes because of voltage dip for 1 year is (y (B), y (A)).
Analyze contrast and adopt novel voltage to fall temporarily the assessment result of describing the fault frequency causing with the voltage dip of traditional description, as shown in Figure 8.
As seen from Figure 8,4 kind equipment voltage-tolerance curve bound forms, the fault frequency, interval that classic method draws all adopt method acquired results large than the present invention.The contrast verification of assessment result the excessively shortcoming of assessment of previously described classic method, and adopt the inventive method to carry out the feasibility of equipment voltage dip immunocompetence assessment.
(3) voltage dip Severity.Without loss of generality, herein take PC as example.Utilize following three formula to calculate MDSI (0.9, T (0.9)), MDSI (0.9-h, T (0.9-h)) ... MDSI (0.1, T(0.1))
Can obtain falling temporarily based on novel voltage the seriousness overall target MMDSI of description:
MMDSI=max{MDSI(0.9，))，MDSI(0.9-h，T(0.9-h))，......MDSI(0.1，T（0.1))}
If MMDSI=0, can obtain T (U
max) < T
min, equipment is normal.If MMDSI=100, can obtain: T (U
min)>=T
max, equipment failure.If between MMDSI value 0-100, can obtain T (U
max)>=T
minand T (U
min) < T
max, equipment is in uncertain region, and MMDSI is larger, falls temporarily and more approaches voltage-tolerance curve lower limit, falls temporarily more serious.
Analyze the assessment result that the seriousness overall target (MMDSI) of describing seriousness overall target (MMDSI) traditional description falls in contrast employing novel voltage temporarily, as shown in Figure 9.
As shown in Figure 9, fall temporarily for arbitrary, its MMDSI value is all less than or equal to MDSI value; Some that adopts MDSI assessment makes equipment in the falling temporarily of malfunction, in the time adopting MMDSI assessment, can't make equipment failure, but in the range of indeterminacy, even normal region; Some that adopts MDSI to assess makes equipment falling temporarily in uncertain region, in the time adopting MMDSI assessment, its order of severity is generally little, be even 0, in normal region, this mainly determines by the non-rectangle degree of falling temporarily, and non-rectangle degree is higher, adopt classic method excessively to assess degree just higher, the difference of MDSI and MMDSI is also just larger.Make equipment in the falling temporarily of normal region, in the time adopting MMDSI assessment, certainly in normal region by some of MDSI assessment.Adopt the voltage dip severity MDSI of classic method in the time that assessment non-rectangle falls temporarily, to have the excessively shortcoming of assessment, and adopt the severity MMDSI of the novel description of voltage dip to address this problem.
Below embodiment has been described in detail the present invention by reference to the accompanying drawings, and those skilled in the art can make many variations example to the present invention according to the above description.Thereby some details in embodiment should not form limitation of the invention, the present invention by the scope defining using appended claims as protection scope of the present invention.
Claims (5)
1. based on how to fall temporarily threshold value and a duration sensitive equipment immunocompetence appraisal procedure, it is characterized in that, comprise the following steps:
Step 1: carry out root-mean-square value and calculate and fall temporarily RMS waveform falling temporarily recorder data; Ask and fall temporarily middle voltage and be less than or equal to the tolerant voltage magnitude U of equipment
ctime T (U
c); And then sequence T (0.9), T (0.9-h), the T (0.9-2h) of threshold value and duration fall in formation temporarily more than one ... T (0.1) wherein T is the time, and unit is ms;
Step 2: the arbitrary event 1≤s that falls temporarily in event falls in certain monitoring for certain website month (certain season, certain year) n temporarily
i≤ n, adopts T
i(0.9), T
i(0.9-h), T
i(0.9-2h) ... T
i(0.1) be described, formation is fallen temporarily Description Matrix, is fallen description list and fall temporarily description figure temporarily;
Step 3: voltage dip Severity: description figure falls in website temporarily that adopt step 2 to produce, in conjunction with voltage dip seriousness index, falls temporarily the seriousness overall target MMDSI of description based on novel voltage, the order of severity of assessment voltage dip comprises:
(1) the single event of falling is temporarily assessed: the sequence that adopts step 1 to produce, and in conjunction with sensitive equipment voltage-tolerance curve bound form or mean value form, assessment sensitive equipment voltage dip immunocompetence;
(2) sensitive equipment voltage dip immunocompetence website evaluation: description figure falls in website temporarily that adopt step 2 to produce, in conjunction with sensitive equipment voltage-tolerance curve bound form or mean value form, assessment sensitive equipment voltage dip immunocompetence;
(3) voltage dip Severity: description figure falls in website temporarily that adopt step 2 to produce, in conjunction with voltage dip seriousness index, falls temporarily the seriousness overall target MMDSI of description based on novel voltage, the order of severity of assessment voltage dip.
2. method according to claim 1, it is characterized in that, in described step 1, form the sequence of falling temporarily threshold value and duration more than: T (0.9), T (0.9-h), T (0.9-2h) ... T (0.1), wherein T is the time, and unit is ms; H is voltage spaces.Adopt definition of T (U
c) | t
c1-t
c2| wherein 0.1≤U
c≤ 0.9, U
cfor voltage, it is perunit value; T (U
c) refer to that falling temporarily middle voltage is less than or equal to U
ctime; Voltage spaces h gets 0.01-0.05p.u..
3. method according to claim 1, it is characterized in that, in step 2, form certain website and fall temporarily Description Matrix: event falls in certain moon, certain season or certain year n temporarily that monitor for certain website, utilize the many sequence computing method of falling temporarily threshold value and duration in step 1, to arbitrary event s that falls temporarily
i(1≤s
i≤ n), be described as T
i(0.9), T
i(0.9-h), T
i(0.9-2h) ... T
i(0.1), represent intuitively, form one and fall temporarily Description Matrix, row represent temporary descending chain, a certain all descriptions of falling temporarily of row table:
4. method according to claim 1, it is characterized in that, in step 2, form certain website and fall temporarily description list and description figure: the each threshold voltage duration in Description Matrix of falling temporarily forming in statistic procedure 2 is more than or equal to the event of falling the temporarily number of certain duration; To fall temporarily every a line in description list and be depicted as one take the time as horizontal ordinate, the curve that unity element is ordinate forms all collection of curves to fall temporarily description figure under the same coordinate system.
5. method according to claim 1, is characterized in that, in step 3, proposes the seriousness overall target MMDSI describing based on voltage dip:
MMDSI=max{MDSI(0.9，))，MDSI(0.9-h，T（0.9-h))，......MDSI(0.1，T(0.1))}
Utilize based on novel voltage and fall temporarily the order of severity that the seriousness overall target MMDSI reflecting voltage of description falls temporarily: work as MMDSI=0, can obtain T (U
max) < T
min, equipment is normal; Work as MMDSI=100, obtain: T (U
min)>=T
max, equipment failure; Between MMDSI value 0-100, obtain T (U
max)>=T
minand T (U
min) < T
max, equipment is in uncertain region, and MMDSI is larger, falls temporarily and more approaches voltage-tolerance curve lower limit, falls temporarily more serious.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022793.7A CN103777096B (en) | 2014-01-17 | 2014-01-17 | Based on how to drop threshold value and persistent period sensitive equipment immunocompetence appraisal procedure temporarily |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410022793.7A CN103777096B (en) | 2014-01-17 | 2014-01-17 | Based on how to drop threshold value and persistent period sensitive equipment immunocompetence appraisal procedure temporarily |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103777096A true CN103777096A (en) | 2014-05-07 |
| CN103777096B CN103777096B (en) | 2016-06-29 |
Family
ID=50569570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410022793.7A Expired - Fee Related CN103777096B (en) | 2014-01-17 | 2014-01-17 | Based on how to drop threshold value and persistent period sensitive equipment immunocompetence appraisal procedure temporarily |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103777096B (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105893757A (en) * | 2016-04-01 | 2016-08-24 | 国网河南省电力公司电力科学研究院 | Voltage sag severity comprehensive evaluation method |
| CN105930976A (en) * | 2016-04-28 | 2016-09-07 | 华北电力大学 | Node voltage sag severity comprehensive assessment method based on weighted ideal point method |
| CN105958478A (en) * | 2016-05-23 | 2016-09-21 | 国网江苏省电力公司电力科学研究院 | Comprehensive voltage sag treatment method for high-quality power park |
| CN106199152A (en) * | 2016-08-17 | 2016-12-07 | 云南电网有限责任公司电力科学研究院 | A kind of voltage dip identification system and method |
| CN106291244A (en) * | 2016-08-24 | 2017-01-04 | 浙江群力电气有限公司 | One repeatedly voltage dip severity appraisal procedure and system |
| CN106384199A (en) * | 2016-09-19 | 2017-02-08 | 国网四川省电力公司经济技术研究院 | Voltage sag assessment method based on process immunization uncertainty |
| CN106774252A (en) * | 2016-12-14 | 2017-05-31 | 全球能源互联网研究院 | The electrical energy power quality disturbance tolerance level test system and method for programmable logic controller (PLC) |
| CN107515338A (en) * | 2017-08-14 | 2017-12-26 | 广州供电局有限公司 | Sensitive equipment voltage dip immunity test method and system |
| CN108089106A (en) * | 2017-12-19 | 2018-05-29 | 四川大学 | A kind of dichotomy test method of voltage dip tolerance |
| CN108152629A (en) * | 2017-12-26 | 2018-06-12 | 中国石油大学(华东) | A kind of method that voltage tolerance force curve is drawn for thermal power plant |
| CN108169544A (en) * | 2017-12-25 | 2018-06-15 | 国网冀北电力有限公司秦皇岛供电公司 | Voltage dip methods of exhibiting and device |
| CN108181527A (en) * | 2017-12-30 | 2018-06-19 | 国网天津市电力公司电力科学研究院 | A kind of appraisal procedure of the voltage dip synthesis severity based on energy indexes |
| CN109283416A (en) * | 2018-11-20 | 2019-01-29 | 广东电网有限责任公司 | A kind of calculation method and device of sensitive equipment failure rate |
| CN109521304A (en) * | 2018-12-07 | 2019-03-26 | 国网河南省电力公司电力科学研究院 | Description and appraisal procedure and the device of resistance characteristics temporarily drop in a kind of node voltage |
| CN110376418A (en) * | 2019-06-18 | 2019-10-25 | 国网上海市电力公司 | Based on the voltage dip comprehensive assessment index acquisition methods for improving characteristic quantity description |
| CN110542812A (en) * | 2019-08-30 | 2019-12-06 | 广州供电局有限公司 | Voltage sag immunity testing method, device, equipment and storage medium |
| CN110568325A (en) * | 2019-08-20 | 2019-12-13 | 广州供电局有限公司 | voltage sag tolerance capability detection method and device of speed-adjustable driving equipment |
| CN110907754A (en) * | 2019-12-02 | 2020-03-24 | 国网福建省电力有限公司莆田供电公司 | Fault line severity evaluation method based on PSD-BPA |
| CN111077396A (en) * | 2019-12-30 | 2020-04-28 | 四川大学 | Analytical model-based low-voltage frequency converter voltage sag tolerance assessment method |
| CN112152224A (en) * | 2020-11-24 | 2020-12-29 | 国网四川省电力公司电力科学研究院 | Voltage sag treatment optimization method and system |
| CN112881824A (en) * | 2021-01-08 | 2021-06-01 | 国网安徽省电力有限公司电力科学研究院 | Method and device for evaluating influence of voltage sag of medium-voltage system on computer equipment |
| CN113656237A (en) * | 2021-07-16 | 2021-11-16 | 华南理工大学 | Load voltage sag immunity rating method, system, device and medium |
| CN114094575A (en) * | 2021-11-22 | 2022-02-25 | 深圳供电局有限公司 | Voltage sag tolerance level analysis method and system for sensitive equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5886429A (en) * | 1997-12-11 | 1999-03-23 | Board Of Regents, The University Of Texas System | Voltage sag/swell testing station |
| CN102901895A (en) * | 2012-09-29 | 2013-01-30 | 上海市电力公司 | Method for evaluating voltage dip sensitivity of sensitive equipment |
| CN103424654A (en) * | 2013-08-02 | 2013-12-04 | 华南理工大学 | Method for assessing voltage sag sensitivity of sensitive equipment |
| CN103487682A (en) * | 2013-09-13 | 2014-01-01 | 深圳供电局有限公司 | Method for early warning of sensitive client electric energy experience quality under voltage dip disturbance |
-
2014
- 2014-01-17 CN CN201410022793.7A patent/CN103777096B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5886429A (en) * | 1997-12-11 | 1999-03-23 | Board Of Regents, The University Of Texas System | Voltage sag/swell testing station |
| CN102901895A (en) * | 2012-09-29 | 2013-01-30 | 上海市电力公司 | Method for evaluating voltage dip sensitivity of sensitive equipment |
| CN103424654A (en) * | 2013-08-02 | 2013-12-04 | 华南理工大学 | Method for assessing voltage sag sensitivity of sensitive equipment |
| CN103487682A (en) * | 2013-09-13 | 2014-01-01 | 深圳供电局有限公司 | Method for early warning of sensitive client electric energy experience quality under voltage dip disturbance |
Non-Patent Citations (2)
| Title |
|---|
| 肖艳辉等: "基于过程性能指数的电压暂降严重程度评估新方法", 《电力系统保护与控制》, vol. 37, no. 23, 1 December 2009 (2009-12-01) * |
| 陈海涛等: "敏感设备电压暂降免疫度的仿真和分析", 《电力科学与技术学报》, vol. 28, no. 3, 30 September 2013 (2013-09-30) * |
Cited By (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105893757A (en) * | 2016-04-01 | 2016-08-24 | 国网河南省电力公司电力科学研究院 | Voltage sag severity comprehensive evaluation method |
| CN105893757B (en) * | 2016-04-01 | 2021-02-09 | 国网河南省电力公司电力科学研究院 | Comprehensive evaluation method for severity of voltage sag |
| CN105930976A (en) * | 2016-04-28 | 2016-09-07 | 华北电力大学 | Node voltage sag severity comprehensive assessment method based on weighted ideal point method |
| CN105930976B (en) * | 2016-04-28 | 2020-01-24 | 华北电力大学 | Node voltage sag severity comprehensive evaluation method based on weighted ideal point method |
| CN105958478A (en) * | 2016-05-23 | 2016-09-21 | 国网江苏省电力公司电力科学研究院 | Comprehensive voltage sag treatment method for high-quality power park |
| CN105958478B (en) * | 2016-05-23 | 2019-03-19 | 国网江苏省电力公司电力科学研究院 | A kind of comprehensive processing method for voltage dip in quality power garden |
| CN106199152B (en) * | 2016-08-17 | 2023-05-05 | 云南电网有限责任公司电力科学研究院 | Voltage sag identification system and method |
| CN106199152A (en) * | 2016-08-17 | 2016-12-07 | 云南电网有限责任公司电力科学研究院 | A kind of voltage dip identification system and method |
| CN106291244A (en) * | 2016-08-24 | 2017-01-04 | 浙江群力电气有限公司 | One repeatedly voltage dip severity appraisal procedure and system |
| CN106291244B (en) * | 2016-08-24 | 2019-08-06 | 杭州电力设备制造有限公司 | A kind of multiple voltage dip severity appraisal procedure |
| CN106384199A (en) * | 2016-09-19 | 2017-02-08 | 国网四川省电力公司经济技术研究院 | Voltage sag assessment method based on process immunization uncertainty |
| CN106774252A (en) * | 2016-12-14 | 2017-05-31 | 全球能源互联网研究院 | The electrical energy power quality disturbance tolerance level test system and method for programmable logic controller (PLC) |
| CN107515338A (en) * | 2017-08-14 | 2017-12-26 | 广州供电局有限公司 | Sensitive equipment voltage dip immunity test method and system |
| CN107515338B (en) * | 2017-08-14 | 2020-02-18 | 广州供电局有限公司 | Method and system for testing voltage sag immunity of sensitive equipment |
| CN108089106A (en) * | 2017-12-19 | 2018-05-29 | 四川大学 | A kind of dichotomy test method of voltage dip tolerance |
| CN108089106B (en) * | 2017-12-19 | 2019-02-19 | 四川大学 | A kind of dichotomy test method of voltage dip tolerance |
| CN108169544A (en) * | 2017-12-25 | 2018-06-15 | 国网冀北电力有限公司秦皇岛供电公司 | Voltage dip methods of exhibiting and device |
| CN108152629B (en) * | 2017-12-26 | 2020-02-18 | 中国石油大学(华东) | Method for drawing voltage tolerance curve of thermal power plant |
| CN108152629A (en) * | 2017-12-26 | 2018-06-12 | 中国石油大学(华东) | A kind of method that voltage tolerance force curve is drawn for thermal power plant |
| CN108181527A (en) * | 2017-12-30 | 2018-06-19 | 国网天津市电力公司电力科学研究院 | A kind of appraisal procedure of the voltage dip synthesis severity based on energy indexes |
| CN109283416A (en) * | 2018-11-20 | 2019-01-29 | 广东电网有限责任公司 | A kind of calculation method and device of sensitive equipment failure rate |
| CN109521304A (en) * | 2018-12-07 | 2019-03-26 | 国网河南省电力公司电力科学研究院 | Description and appraisal procedure and the device of resistance characteristics temporarily drop in a kind of node voltage |
| CN110376418A (en) * | 2019-06-18 | 2019-10-25 | 国网上海市电力公司 | Based on the voltage dip comprehensive assessment index acquisition methods for improving characteristic quantity description |
| CN110568325A (en) * | 2019-08-20 | 2019-12-13 | 广州供电局有限公司 | voltage sag tolerance capability detection method and device of speed-adjustable driving equipment |
| CN110542812A (en) * | 2019-08-30 | 2019-12-06 | 广州供电局有限公司 | Voltage sag immunity testing method, device, equipment and storage medium |
| CN110907754B (en) * | 2019-12-02 | 2021-10-01 | 国网福建省电力有限公司莆田供电公司 | Fault line severity evaluation method based on PSD-BPA |
| CN110907754A (en) * | 2019-12-02 | 2020-03-24 | 国网福建省电力有限公司莆田供电公司 | Fault line severity evaluation method based on PSD-BPA |
| CN111077396B (en) * | 2019-12-30 | 2021-04-13 | 四川大学 | Analytical model-based low-voltage frequency converter voltage sag tolerance assessment method |
| CN111077396A (en) * | 2019-12-30 | 2020-04-28 | 四川大学 | Analytical model-based low-voltage frequency converter voltage sag tolerance assessment method |
| CN112152224B (en) * | 2020-11-24 | 2021-02-09 | 国网四川省电力公司电力科学研究院 | Voltage sag treatment optimization method and system |
| CN112152224A (en) * | 2020-11-24 | 2020-12-29 | 国网四川省电力公司电力科学研究院 | Voltage sag treatment optimization method and system |
| CN112881824A (en) * | 2021-01-08 | 2021-06-01 | 国网安徽省电力有限公司电力科学研究院 | Method and device for evaluating influence of voltage sag of medium-voltage system on computer equipment |
| CN113656237A (en) * | 2021-07-16 | 2021-11-16 | 华南理工大学 | Load voltage sag immunity rating method, system, device and medium |
| CN114094575A (en) * | 2021-11-22 | 2022-02-25 | 深圳供电局有限公司 | Voltage sag tolerance level analysis method and system for sensitive equipment |
| CN114094575B (en) * | 2021-11-22 | 2023-11-17 | 深圳供电局有限公司 | Voltage sag tolerance level analysis method and system for sensitive equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103777096B (en) | 2016-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103777096A (en) | Sensitive device immunity estimation method based on multiple sag threshold values and duration time | |
| JP5607772B2 (en) | Solar cell panel monitoring program, solar cell panel monitoring device, and solar cell panel monitoring method | |
| CN104242267B (en) | A kind of wind-power electricity generation sends out transmission line distance protecting method | |
| Cebrian et al. | Probabilistic assessment of financial losses in distribution network due to fault-induced process interruptions considering process immunity time | |
| CN103489138B (en) | The Controlling UEP method of a kind of power transmission network failure message and the out-of-limit information of circuit | |
| CN104808653B (en) | The fault detect of motor servo system additivity and fault tolerant control method based on sliding formwork | |
| JP5736530B1 (en) | A method of predicting the future current value or the amount of power generation decline of a photovoltaic power generation system | |
| CN103837777B (en) | Electric power system electricity quality evaluation method and system | |
| CN103646358A (en) | Method for detecting planned maintenance cycle of power grid related to power equipment time-varying failure rate | |
| Jóhannsson et al. | Wide-area assessment of aperiodic small signal rotor angle stability in real-time | |
| CN106226621A (en) | A kind of secondary device fault diagnosis based on grey correlation analysis and method for early warning | |
| CN104076233A (en) | Ageing degree detecting method and device | |
| CN104300532A (en) | Voltage sag evaluation process based on matrix factor | |
| CN105743073A (en) | Improved inverse time limit over-current protection method | |
| CN104833900A (en) | Integrated line selection method for small-current single-phase grounding fault | |
| Cepeda et al. | Recognition of post-contingency dynamic vulnerability regions: Towards smart grids | |
| CN105182137B (en) | Method and apparatus for the failure for diagnosing the anti-icing heating unit of electricity | |
| CN103793765B (en) | A kind of satellite telemetering data Forecasting Methodology based on Kalman filter | |
| CN103811081B (en) | A kind of method and apparatus that prevents the malfunction of nuclear plant safety protection system | |
| CN104486786A (en) | Fault detection method of wireless sensor network | |
| CN104763576A (en) | Distinguishing and correcting method for auxiliary signal anomaly for pumped storage group protection | |
| Sobbouhi et al. | A new algorithm for predicting out-of-step using rotor speed-acceleration based on phasor measurement units (PMU) data | |
| CN104182905A (en) | Power grid fault diagnosis method based on data mining | |
| CN105182228B (en) | Breaker on-line operation ability brief appraisal method | |
| CN104483596A (en) | Method and system for associating information of protection time asynchronization fault of two ends of circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |