CN103389427B - GIS equipment operational condition online test method and system - Google Patents
GIS equipment operational condition online test method and system Download PDFInfo
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- CN103389427B CN103389427B CN201310330690.2A CN201310330690A CN103389427B CN 103389427 B CN103389427 B CN 103389427B CN 201310330690 A CN201310330690 A CN 201310330690A CN 103389427 B CN103389427 B CN 103389427B
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Abstract
The invention provides a kind of GIS equipment operational condition online test method and system, first according to the character of eigenwert, capping threshold value and lower limit threshold value, eigenwert and reference characteristic value are done difference, obtain deviate, whether judgment bias value exceedes described upper limit threshold value or described lower limit threshold value afterwards, if exceed, then directly send alerting signal, if do not exceed, then deviate is multiplied by and is worth corresponding weight coefficient to reference characteristic, draw threshold value, finally obtain total threshold value by cumulative for threshold values all in detection time, according to total threshold value determination GIS equipment operational condition, GIS equipment operational condition online test method of the present invention and system adopt the detection method containing weight, embody eigenwert weight residing on different time and status, take into account the GIS equipment operational condition before historical data reaction, can accurate on-line checkingi GIS equipment operational condition.
Description
Technical field
The present invention relates to online measuring technique field, particularly relate to GIS equipment operational condition online test method and system.
Background technology
Intelligent gas insulation in combined electric appliance (GasInsulatedSwitchgear, GIS device) is that the construction for adapting to intelligent grid puts forward, and in electric system, play protection and control action, its reliability directly affects the safe operation of whole electrical network.The infrastructure device of intelligent grid is the primary equipment of intelligence, and the construction of intelligent grid be unable to do without the intelligent construction comprising the primary equipments such as GIS device, and GIS device intelligent construction degree direct influence intelligent substation, informationization.Along with the raising of integrated automation of transformation stations level (unmanned), the reliability of GIS device is had higher requirement.Smart machine is GIS device and the combination of relevant intelligent assembly.Intelligent assembly to measure digitizing, net control, status visualization, function integration, information interaction turn to feature, possess measurement, control, protection, metering, detect in all or part of function.Along with intelligent substation putting into operation in China, intelligent GIS equipment, as the primary element in electrical network with intelligent feature, is widely used in the construction of China's intelligent grid.
As a kind of brand-new equipment mode, intelligentized GIS device also has a lot of problem to need to inquire into further in the application.After carrying out intelligent construction, also will inevitably there are new effective means to its state evaluation in GIS device.The running status of the primary equipments such as real-time grasp GIS device, for scientific dispatch provides foundation; Can make GIS device fault type and life assessment and judging fast and effectively, run and maintenance to instruct, reduce operational management cost, reduce newborn hidden danger and produce probability, strengthen operational reliability.The accuracy of GIS device on-line operation condition adjudgement depends on its monitoring and analytical approach.GIS device on-line monitoring analytical approach is exactly the permission parameter of the characteristic parameter obtained after signal transacting and regulation or discrimination standard are compared, thus determine the duty of GIS device, the type that whether there is fault and fault and character etc., the trend that simultaneously may develop according to current data predicted state thus carry out fault trend analysis, should formulate rational criterion and strategy for this reason.
Due to the complicacy of GIS device structure and the diversity of failure mode, also fewer to the paractical research of GIS device enforcement state recognition at present.Conventional recognition methods is the simple judgment method based on threshold value compares, namely non-fault and fault severity level is had to judge and distinguish according to some simple parameters to isolating switch, the method is more single, and GIS equipment operational condition is not only relevant with current operating conditions, also the historical data with running status is before relevant, so the above-mentioned detection method compared with threshold value accurately cannot detect GIS equipment operational condition.
Summary of the invention
Based on this, be necessary the problem that accurately cannot detect GIS equipment operational condition for existing GIS equipment operational condition online test method, a kind of method and system that accurately can detect GIS equipment operational condition is provided.
A kind of GIS equipment operational condition online test method, comprises step:
According to the character of the eigenwert of GIS equipment operational condition, capping threshold value and lower limit threshold value;
Reference characteristic value corresponding to described eigenwert for the eigenwert of described GIS equipment operational condition is done difference, obtains deviate;
Judge whether described deviate exceedes described upper limit threshold value or described lower limit threshold value, if exceed, then directly sends alerting signal, if do not exceed, then described deviate is multiplied by and is worth corresponding weight coefficient to described reference characteristic, draw threshold value;
Obtain total threshold value by cumulative for described threshold values all in detection time, determine described GIS equipment operational condition according to described total threshold value.
A kind of GIS equipment operational condition on-line detecting system, comprising:
Threshold settings module, for the character of the eigenwert according to GIS equipment operational condition, capping threshold value and lower limit threshold value;
Deviate acquisition module, for reference characteristic value corresponding to described eigenwert for the eigenwert of described GIS equipment operational condition is done difference, obtains deviate;
Judge module, for judging whether described deviate exceedes described upper limit threshold value or described lower limit threshold value, if exceed, then directly send alerting signal, if do not exceed, then described deviate is multiplied by and is worth corresponding weight coefficient to described reference characteristic, draw threshold value;
Results analyses module, for obtaining total threshold value by cumulative for described threshold values all in detection time, determines described GIS equipment operational condition according to described total threshold value.
GIS equipment operational condition online test method of the present invention, utilize the eigenwert of GIS equipment operational condition, reference characteristic value and the weight coefficient corresponding to described eigenwert, analysis containing weight is carried out to GIS device, wherein, weight coefficient distributes according to time sequencing, the weight coefficient that each detection time puts is not identical, the weight coefficient of the time point nearer with current sensing time point is larger, this overcome general GIS equipment operational condition online test method and cannot embody eigenwert weight residing on different time and status, also reacted the impact of historical data on current GIS equipment running status simultaneously, GIS equipment operational condition online test method of the present invention embodies eigenwert weight residing on different time and status, take into account the GIS equipment operational condition before historical data reaction, thus can accurate on-line checkingi GIS equipment operational condition.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of GIS equipment operational condition online test method of the present invention first embodiment;
Fig. 2 is the schematic flow sheet of GIS equipment operational condition online test method of the present invention second embodiment;
Fig. 3 is the structural representation of GIS equipment operational condition on-line detecting system of the present invention first embodiment;
Fig. 4 is the structural representation of GIS equipment operational condition on-line detecting system of the present invention second embodiment.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below with reference to the accompanying drawings and embodiment, the present invention is further elaborated.Should be appreciated that concrete enforcement described herein is only in order to explain the present invention, does not limit the present invention.
For the ease of explaining the technical scheme that GIS equipment operational condition online test method of the present invention and system are described, in following specific embodiment, alphabetical designated parts numerical value will be selected.
As shown in Figure 1, a kind of GIS equipment operational condition online test method, comprises step:
S200: according to the character of the eigenwert of GIS equipment operational condition, capping threshold value and lower limit threshold value.
According to the character of each eigenwert, capping threshold value and lower limit threshold value, this threshold value can set according to operator's experience, also can set according to the historical record data of GIS equipment operational condition.
S400: reference characteristic value corresponding to described eigenwert for the eigenwert of described GIS equipment operational condition is done difference, obtains deviate.
Each eigenwert has an its corresponding reference characteristic value, after the eigenwert obtaining GIS equipment operational condition, just obtains its corresponding reference characteristic value according to this eigenwert, then eigenwert and reference characteristic value do difference, obtains deviate.
S600: judge whether described deviate exceedes described upper limit threshold value or described lower limit threshold value, if exceed, then directly sends alerting signal, if do not exceed, is then multiplied by described deviate and is worth corresponding weight coefficient to described reference characteristic, draw threshold value.
Whether judgment bias value exceedes upper limit threshold value or lower limit threshold value; if exceed, directly send alerting signal; teaching process person current GIS equipment running status is abnormal, needs maintenance down to fix a breakdown, if do not exceed, deviate is multiplied by weight coefficient and obtains threshold value.Wherein, weight coefficient distributes according to time sequencing, and the weight coefficient that each detection time puts is not identical, and the weight coefficient of the time point nearer with current sensing time point is larger.Such as upper and lower limit threshold value is respectively 6 and 3; if current acquisition deviate is 5, the weight coefficient being multiplied by the current detection moment by 5 obtains threshold value, if current acquisition deviate is 7 or 2; directly send alerting signal, inform that GIS device is run and occur extremely needing maintenance down.
S800: obtain total threshold value by cumulative for described threshold values all in detection time, determine described GIS equipment operational condition according to described total threshold value.
Obtaining threshold value respectively to putting detection times all in the sense cycle preset, obtaining total threshold value, according to this total threshold decision GIS equipment operational condition by cumulative for all threshold values more afterwards.Specifically, the less of total threshold value shows that GIS equipment operational condition is better.
Below by employing specific embodiment, use letter to refer to the numerical value occurred in whole step, explain the technical scheme of GIS equipment operational condition online test method of the present invention in detail.
The first-selected character according to each eigenwert of GIS equipment operational condition, setting high alarm setting and lower limit threshold value, the eigenwert X will obtained online afterwards
ideduct the reference value C of its correspondence
i, obtain the deviation of measured value and reference value, if deviation exceeds bound threshold value, then directly send out alerting signal, if do not have out-of-limit, then this deviation is multiplied by weight coefficient a corresponding to this eigenwert
i, acquired results A
i (threshold value)represent, i.e. A
i (threshold value)=a
i* (X
i-C
i), finally by the A corresponding to the eigenwert in each moment that obtains in certain hour
i (threshold value)value is cumulative, acquired results S
(threshold value)represent, i.e. S
(threshold value)=Σ A
i (threshold value).By analyzing S
(threshold value)size, intuitively can reflect the state residing for GIS device, S
(threshold value)value less, show that GIS equipment operational condition is better.
GIS equipment operational condition online test method of the present invention, utilize the eigenwert of GIS equipment operational condition, reference characteristic value and the weight coefficient corresponding to described eigenwert, analysis containing weight is carried out to GIS device, wherein, weight coefficient distributes according to time sequencing, the weight coefficient that each detection time puts is not identical, the weight coefficient of the time point nearer with current sensing time point is larger, this overcome general GIS equipment operational condition online test method and cannot embody eigenwert weight residing on different time and status, also reacted the impact of historical data on current GIS equipment running status simultaneously, GIS equipment operational condition online test method of the present invention embodies eigenwert weight residing on different time and status, take into account the GIS equipment operational condition before historical data reaction, thus can accurate on-line checkingi GIS equipment operational condition.
As shown in Figure 2, wherein in an embodiment, before described step S200 also in steps
S100: the eigenwert and the reference characteristic value that obtain described GIS equipment operational condition.
What obtain here can be the eigenwert obtaining GIS equipment operational condition online, also can be the historical data directly reading GIS equipment operational condition, or the conventional data of Computer Storage directly imports reading.
As shown in Figure 2, wherein in an embodiment, before described step S600 also in steps
S500: calculate the described weight coefficient group corresponding to described eigenwert, described weight coefficient group comprises multiple weight coefficient, and the computing formula of described weight coefficient is
wherein m=(n
3+ 5n)/6, a
nfor the weight coefficient of current sensing time point, n be from the detection number of times of current sensing time point detected.
Weight coefficient distributes according to time sequencing, and the weight coefficient that each detection time puts is not identical, and the weight coefficient of the time point nearer with current sensing time point is larger.Such as current detection number of times is that the 4th in the current detection cycle detects, then m=16, a
4=0.375.
As shown in Figure 2, wherein in an embodiment, described step S800 specifically comprises:
S820: obtain total threshold value by cumulative for described threshold values all in detection time;
S840: described total threshold value is compared respectively with the first threshold preset and default Second Threshold, wherein, described default first threshold is less than described default Second Threshold, if described total threshold value is less than described default first threshold, then described GIS equipment operational condition is excellent, if described total threshold value is less than described default Second Threshold and be greater than described default first threshold, then described GIS equipment operational condition is normal, if described total threshold value is greater than described default Second Threshold, then described GIS equipment operational condition is abnormal.
Originally be in embodiment, the Second Threshold being provided with default first threshold and presetting, be divided into three threshold intervals, three threshold intervals corresponding abnormal, normal, excellent three state response GIS equipment operational condition respectively, set-up mode so intuitively, convenient operation person knows current GIS equipment running status in time, fast, can meet the demand of most of detection case.Be to be understood that when actual conditions require to detect more accurately GIS equipment operational condition time, the threshold value of more multiple preset and the state corresponding from more different threshold interval can be set, come more precisely to react GIS equipment operational condition, otherwise, can select when GIS equipment operational condition only roughly need be understood to arrange a contrast threshold value or directly by described total threshold value compared with zero, when described total threshold value more close to zero time, described GIS equipment operational condition is better.
Wherein in an embodiment, the priority of described reference characteristic value comprises successively from excellent to secondary, and product description, test findings, operating experience and expert are self-defined.
As shown in Figure 3, a kind of GIS equipment operational condition on-line detecting system, comprising:
Threshold settings module 100, for the character of the eigenwert according to GIS equipment operational condition, capping threshold value and lower limit threshold value;
Deviate acquisition module 200, for reference characteristic value corresponding to described eigenwert for the eigenwert of described GIS equipment operational condition is done difference, obtains deviate;
Judge module 300, for judging whether described deviate exceedes described upper limit threshold value or described lower limit threshold value, if exceed, then directly send alerting signal, if do not exceed, then described deviate is multiplied by and is worth corresponding weight coefficient to described reference characteristic, draw threshold value;
Results analyses module 400, for obtaining total threshold value by cumulative for described threshold values all in detection time, determines described GIS equipment operational condition according to described total threshold value.
GIS equipment operational condition on-line detecting system of the present invention, utilize the eigenwert of GIS equipment operational condition, reference characteristic value and the weight coefficient corresponding to described eigenwert, analysis containing weight is carried out to GIS device, wherein, weight coefficient distributes according to time sequencing, the weight coefficient that each detection time puts is not identical, the weight coefficient of the time point nearer with current sensing time point is larger, this overcome general GIS equipment operational condition online test method and cannot embody eigenwert weight residing on different time and status, also reacted the impact of historical data on current GIS equipment running status simultaneously, GIS equipment operational condition on-line detecting system of the present invention embodies eigenwert weight residing on different time and status, take into account the GIS equipment operational condition before historical data reaction, thus can accurate on-line checkingi GIS equipment operational condition.
As shown in Figure 4, wherein in an embodiment, described GIS equipment operational condition on-line detecting system also comprises:
Numerical value acquisition module 500, for obtaining eigenwert and the reference characteristic value of described GIS equipment operational condition.
As shown in Figure 4, wherein in an embodiment, described GIS equipment operational condition on-line detecting system also comprises:
Weight coefficient computing module 600, for calculating the described weight coefficient group corresponding to described eigenwert, described weight coefficient group comprises multiple weight coefficient, and the computing formula of described weight coefficient is
wherein m=(n
3+ 5n)/6, a
nfor the weight coefficient of current sensing time point, n be from the detection number of times of current sensing time point detected.
As shown in Figure 4, wherein in an embodiment, described results analyses module 400 specifically comprises:
Numerical value summing elements 420, for obtaining total threshold value by cumulative for described threshold values all in detection time;
Status determining unit 440, for described total threshold value is compared respectively with the first threshold preset and default Second Threshold, wherein, described default first threshold is less than described default Second Threshold, if described total threshold value is less than described default first threshold, then described GIS equipment operational condition is excellent, if described total threshold value is less than described default Second Threshold and be greater than described default first threshold, then described GIS equipment operational condition is normal, if described total threshold value is greater than described default Second Threshold, then described GIS equipment operational condition is abnormal.
Wherein in an embodiment, the priority of described reference characteristic value comprises successively from excellent to secondary, and product description, test findings, operating experience and expert are self-defined.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (8)
1. a GIS equipment operational condition online test method, is characterized in that, comprises step:
According to the character of the eigenwert of GIS equipment operational condition, capping threshold value and lower limit threshold value;
Reference characteristic value corresponding to described eigenwert for the eigenwert of described GIS equipment operational condition is done difference, obtains deviate;
Calculate the weight coefficient group corresponding to described eigenwert, described weight coefficient group comprises multiple weight coefficient, and the computing formula of described weight coefficient is
wherein m=(n
3+ 5n)/6, a
nfor the weight coefficient of current sensing time point, n be from the detection number of times of current sensing time point detected;
Judge whether described deviate exceedes described upper limit threshold value or described lower limit threshold value, if exceed, then directly sends alerting signal, if do not exceed, then described deviate is multiplied by and is worth corresponding weight coefficient to described reference characteristic, draw threshold value;
Obtain total threshold value by cumulative for described threshold values all in detection time, determine described GIS equipment operational condition according to described total threshold value.
2. GIS equipment operational condition online test method according to claim 1, is characterized in that, described step according to the character of the eigenwert of GIS equipment operational condition, before capping threshold value and lower limit threshold value also in steps:
Obtain eigenwert and the reference characteristic value of described GIS equipment operational condition.
3. GIS equipment operational condition online test method according to claim 1 and 2, is characterized in that, described step obtains total threshold value by cumulative for described threshold values all in detection time, determines that described GIS equipment operational condition specifically comprises according to described total threshold value:
Total threshold value is obtained by cumulative for described threshold values all in detection time;
Described total threshold value is compared respectively with the first threshold preset and default Second Threshold, wherein, described default first threshold is less than described default Second Threshold, if described total threshold value is less than described default first threshold, then described GIS equipment operational condition is excellent, if described total threshold value is less than described default Second Threshold and be greater than described default first threshold, then described GIS equipment operational condition is normal, if described total threshold value is greater than described default Second Threshold, then described GIS equipment operational condition is abnormal.
4. GIS equipment operational condition online test method according to claim 1 and 2, is characterized in that, the priority of described reference characteristic value comprises successively from excellent to secondary, and product description, test findings, operating experience and expert are self-defined.
5. a GIS equipment operational condition on-line detecting system, is characterized in that, comprising:
Threshold settings module, for the character of the eigenwert according to GIS equipment operational condition, capping threshold value and lower limit threshold value;
Deviate acquisition module, for reference characteristic value corresponding to described eigenwert for the eigenwert of described GIS equipment operational condition is done difference, obtains deviate;
Weight coefficient computing module, for calculating the weight coefficient group corresponding to described eigenwert, described weight coefficient group comprises multiple weight coefficient, and the computing formula of described weight coefficient is
wherein m=(n
3+ 5n)/6, a
nfor the weight coefficient of current sensing time point, n be from the detection number of times of current sensing time point detected;
Judge module, for judging whether described deviate exceedes described upper limit threshold value or described lower limit threshold value, if exceed, then directly send alerting signal, if do not exceed, then described deviate is multiplied by and is worth corresponding weight coefficient to described reference characteristic, draw threshold value;
Results analyses module, for obtaining total threshold value by cumulative for described threshold values all in detection time, determines described GIS equipment operational condition according to described total threshold value.
6. GIS equipment operational condition on-line detecting system according to claim 5, is characterized in that, also comprise:
Numerical value acquisition module, for obtaining eigenwert and the reference characteristic value of described GIS equipment operational condition.
7. the GIS equipment operational condition on-line detecting system according to claim 5 or 6, is characterized in that, described results analyses module specifically comprises:
Numerical value summing elements, for obtaining total threshold value by cumulative for described threshold values all in detection time;
Status determining unit, for described total threshold value is compared respectively with the first threshold preset and default Second Threshold, wherein, described default first threshold is less than described default Second Threshold, if described total threshold value is less than described default first threshold, then described GIS equipment operational condition is excellent, if described total threshold value is less than described default Second Threshold and be greater than described default first threshold, then described GIS equipment operational condition is normal, if described total threshold value is greater than described default Second Threshold, then described GIS equipment operational condition is abnormal.
8. the GIS equipment operational condition on-line detecting system according to claim 5 or 6, is characterized in that, the priority of described reference characteristic value comprises successively from excellent to secondary, and product description, test findings, operating experience and expert are self-defined.
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| CN107566205B (en) * | 2017-07-06 | 2021-02-19 | 中国南方电网有限责任公司 | SV message-based merging unit synchronous measurement method |
| CN108982989A (en) * | 2018-05-28 | 2018-12-11 | 国网内蒙古东部电力有限公司检修分公司 | Extra-high voltage DC grounding electrode operating status assessment system based on multi-characteristicquantity quantity information |
| CN109298700B (en) * | 2018-11-16 | 2020-12-04 | 湖南省湘电试验研究院有限公司 | Method and system for judging abnormal change of operation parameters of thermal power generating unit in real time |
| CN109583599A (en) * | 2018-11-23 | 2019-04-05 | 广州供电局有限公司 | Abnormal state detection method |
| CN111243250B (en) * | 2019-12-25 | 2022-05-27 | 东软集团股份有限公司 | Maintenance early warning method, device and equipment based on alarm data |
| CN113567163A (en) * | 2021-07-16 | 2021-10-29 | 北京新典恒益科技有限公司 | Roller coaster operation detection, analysis and abnormity early warning method |
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