CN110334100A - A kind of critical point identification and abnormality diagnostic method based on critical point standard - Google Patents
A kind of critical point identification and abnormality diagnostic method based on critical point standard Download PDFInfo
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- CN110334100A CN110334100A CN201910620645.8A CN201910620645A CN110334100A CN 110334100 A CN110334100 A CN 110334100A CN 201910620645 A CN201910620645 A CN 201910620645A CN 110334100 A CN110334100 A CN 110334100A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2282—Tablespace storage structures; Management thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
- G06F16/2462—Approximate or statistical queries
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/20—Administration of product repair or maintenance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The critical point identification and abnormality diagnostic method that the invention discloses a kind of based on critical point standard, comprising the following steps: obtain base profile data, be saved in database；Substation, power plant, the setting of high voltage customer area attribute, including affiliated unit, management unit, run unit；Obtain the number in switch names；According to the subregion switched in critical point standard identification substation, divide critical point；According to critical point standard identification power plant's online critical point；High voltage customer critical point is identified according to critical point standard；Obtain same period line loss system partitioning, partial pressure critical point list；Export same period line loss system partitioning, partial pressure line loss model list.The present invention carries out critical point configuration by formulating a critical point configuration standard, guidance management personnel, simultaneously, based on constituent parts base profile, according to critical point standard, the automatic identification at critical point may be implemented, and diagnose correctness, the normalization of the configuration of constituent parts model according to recognition result.
Description
Technical field
The present invention relates to technical field more particularly to a kind of critical point identifications and abnormality diagnostic method based on critical point standard.
Background technique
Line loss is the abbreviation of power grid electric energy loss, and line loss per unit is that an important integrated technology economy of electric power enterprise refers to
Mark, it reflects the level of the planning and designing of a power grid, production technology and operation management, is examination power grid power supply enterprise, country
Important technology economic indicator, wherein critical point management be Controlling line loss work basis.This patent is mainly studied major network subregion, is divided
Critical point standard, critical point identification and the abnormity diagnosis being related in crimping damage.
Currently, Guo Wang company be carried out based on the same period line loss system subregion, partial pressure line loss calculation, examination, and subregion,
Two emphasis for dividing line loss calculation are line loss model and energy metering, and energy metering data are obtained by electric energy system
, data are more accurate, reliable, and for line loss model, it is that service management personnel is needed to carry out hand in same period line loss system
Work configuration, accuracy can not be measured, and often administrative staff configure according to the experience of oneself, and there have been constituent parts for this
Model configures the situation of lack of standardization, disunity, inaccuracy.
Summary of the invention
Technical problems based on background technology, the critical point identification that the invention proposes a kind of based on critical point standard with it is different
Normal diagnostic method.
The technical solution adopted by the present invention is that:
A kind of critical point identification and abnormality diagnostic method based on critical point standard, which comprises the following steps:
(1) base profile data are obtained, are saved in database, including substation, power plant, 35kV and above
High voltage customer, transmission line of electricity, stand in switch, user's stoichiometric point, power plant/user settle accounts point；
(2) substation, power plant, the setting of high voltage customer area attribute, including affiliated unit, management unit, run unit；
It is provincial power supply company that affiliated unit, which must be arranged, in 220kV substation/power plant/high voltage customer, 110kV power plant, and management unit is ground
City-level power supply company；It is power supply company, districts and cities, operation that management unit, which must be arranged, in 110kV/35kV substation/power plant/high voltage customer
Unit is power supply company at county level；
(3) obtain switch names in number, according to rule determine critical point position, including main transformer high side switch,
Main transformer medium voltage side switch, main transformer low-pressure side switch, power plant critical point, user critical point of the setting clearing point in power transformation side, determine clearing
Point is in Power Plant Side/user side stoichiometric point；
(4) subregion switched in substation, partial pressure critical point are identified according to critical point standard, specifically includes that 1. 220kV substation
Main transformer high side switch is to save subregion critical point, across unit 220kV over the ground to turn 220kV partial pressure critical point；2. in 220kV substation
The main transformer mesolow side 110kV, 35kV switch is that 220kV turns 110kV/35kV our unit partial pressure critical point, 35kV in 110kV substation
Main transformer medium voltage side switch is that 110kV turns 35kV our unit partial pressure critical point；The interior 10kV main transformer low pressure 3. 220kV/110kV/35kV stands
Side switch is the county Di Dui subregion critical point, across unit 10kV turns 10kV and divides critical point；4. for suburban area, there are substation's low pressure
Side bus a portion switchs the critical point to power to other companies, is identified as county and turns 10kV points to county critical point, across unit 10kV
Press critical point；
(5) according to critical point standard identification power plant's online critical point, province's tune/ground tune/tune power plant, county, 10kV are distinguished by voltage class
Power plant is county's tune power plant, and 35kV power plant is Di Tiao power plant, and 110kV and above are to save to adjust power plant, by clearing critical point position
It sets and is divided into Power Plant Side clearing and transformer substation side clearing, recognition rule are as follows: 1. the clearing critical point of county's tune power plant is identified as unit at county level
Power plant's online subregion/partial pressure critical point；The clearing critical point of ②Di Tiao power plant is ground level unit online critical point；Power plant's clearing are adjusted to close 3. saving
Mouth is provincial unit online critical point, saves critical point over the ground；④Di Tiao power plant and the sale of electricity direction for saving tune power plant are treated by individual line subscriber；
(6) high voltage customer critical point is identified according to critical point standard, high voltage customer can be divided into user side knot by clearing critical point position
Calculate and transformer substation side clearing, recognition rule are as follows: 1. 220kV user settle accounts point be province over the ground critical point and the county Di Dui critical point, across unit
220kV turns 220kV partial pressure critical point；2. 110kV/35kV user settles accounts the county Dian Weididui critical point, produces across unit with voltage class
Divide critical point；
(7) obtain same period line loss system partitioning, partial pressure critical point list, by power supply unit/by electric unit, supply voltage/
Power receiving voltage, stoichiometric point number, forward and reverse plus-minus relation information, be compared with recognition result, find out the subregion configured extremely,
Divide model；
(8) same period line loss system partitioning, partial pressure line loss model list are exported, critical point recognition result and the same period are configured into feelings
Condition is compared, by same period polygamy, less match, the model of configuration error is shown, carry out confirmation modification by administrative staff.
The invention has the advantages that
The present invention carries out critical point configuration by formulating a critical point configuration standard, guidance management personnel, meanwhile, it is based on each list
The automatic identification at critical point may be implemented according to critical point standard in position base profile, and constituent parts model is diagnosed according to recognition result
Correctness, the normalization of configuration.
Detailed description of the invention
Fig. 1 is the flow chart of critical point identification division in the present invention.
Fig. 2 is switch list structural schematic diagram.
Fig. 3 is subregion, partial pressure model structure one.
Fig. 4 is subregion, partial pressure model structure two.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Embodiment.
As shown in Figure 1, a kind of critical point identification and abnormality diagnostic method based on critical point standard, comprising the following steps:
(1) base profile data are obtained, are saved in database, including substation, power plant, 35kV and above
High voltage customer, transmission line of electricity, stand in switch, user's stoichiometric point, power plant/user settle accounts point；
(2) substation, power plant, the setting of high voltage customer area attribute, including affiliated unit, management unit, run unit；
It is provincial power supply company that affiliated unit, which must be arranged, in 220kV substation/power plant/high voltage customer, 110kV power plant, and management unit is ground
City-level power supply company；It is power supply company, districts and cities, operation that management unit, which must be arranged, in 110kV/35kV substation/power plant/high voltage customer
Unit is power supply company at county level；
(3) obtain switch names in number, according to rule determine critical point position, including main transformer high side switch,
Main transformer medium voltage side switch, main transformer low-pressure side switch, power plant critical point, user critical point of the setting clearing point in power transformation side, determine clearing
Point is in Power Plant Side/user side stoichiometric point；
(4) subregion switched in substation, partial pressure critical point are identified according to critical point standard, specifically includes that 1. 220kV substation
Main transformer high side switch is to save subregion critical point, across unit 220kV over the ground to turn 220kV partial pressure critical point；2. in 220kV substation
The main transformer mesolow side 110kV, 35kV switch is that 220kV turns 110kV/35kV our unit partial pressure critical point, 35kV in 110kV substation
Main transformer medium voltage side switch is that 110kV turns 35kV our unit partial pressure critical point；The interior 10kV main transformer low pressure 3. 220kV/110kV/35kV stands
Side switch is the county Di Dui subregion critical point, across unit 10kV turns 10kV and divides critical point；4. for suburban area, there are substation's low pressure
Side bus a portion switchs the critical point to power to other companies, is identified as county and turns 10kV points to county critical point, across unit 10kV
Press critical point；
(5) according to critical point standard identification power plant's online critical point, province's tune/ground tune/tune power plant, county, 10kV are distinguished by voltage class
Power plant is county's tune power plant, and 35kV power plant is Di Tiao power plant, and 110kV and above are to save to adjust power plant, by clearing critical point position
It sets and is divided into Power Plant Side clearing and transformer substation side clearing, recognition rule are as follows: 1. the clearing critical point of county's tune power plant is identified as unit at county level
Power plant's online subregion/partial pressure critical point；The clearing critical point of ②Di Tiao power plant is ground level unit online critical point；Power plant's clearing are adjusted to close 3. saving
Mouth is provincial unit online critical point, saves critical point over the ground；④Di Tiao power plant and the sale of electricity direction for saving tune power plant are treated by individual line subscriber；
(6) high voltage customer critical point is identified according to critical point standard, high voltage customer can be divided into user side knot by clearing critical point position
Calculate and transformer substation side clearing, recognition rule are as follows: 1. 220kV user settle accounts point be province over the ground critical point and the county Di Dui critical point, across unit
220kV turns 220kV partial pressure critical point；2. 110kV/35kV user settles accounts the county Dian Weididui critical point, produces across unit with voltage class
Divide critical point；
(7) obtain same period line loss system partitioning, partial pressure critical point list, by power supply unit/by electric unit, supply voltage/
Power receiving voltage, stoichiometric point number, forward and reverse plus-minus relation information, be compared with recognition result, find out the subregion configured extremely,
Divide model；
(8) same period line loss system partitioning, partial pressure line loss model list are exported, critical point recognition result and the same period are configured into feelings
Condition is compared, by same period polygamy, less match, the model of configuration error is shown, carry out confirmation modification by administrative staff.
1, data processing
Obtain substation data (substation's number, power transformation station name, voltage class), power plant (power plant's number, power plant's name
Claim, voltage class), high voltage customer (Customs Assigned Number, user's name, voltage class), route (circuit number, line name, voltage
Grade, starting power station, starting switch, terminate power station, terminate switch), switch (switch number, switch names, voltage class, meter
Amount point a number, stoichiometric point title, measuring point number, measuring point title), user's stoichiometric point (stoichiometric point number, stoichiometric point title, voltage
Grade) data.
Affiliated unit, management unit, affiliated unit is arranged in substation, power plant, high voltage customer, and affiliated unit can be according to shelves
Unit in case is configured, and is unit at county level, and management unit is its superior unit, and affiliated unit configures on demand, is provincial list
Position；It is specific to divide rank are as follows: it is provincial power supply that affiliated unit, which must be arranged, in 220kV substation/power plant/high voltage customer, 110kV power plant
Company, management unit are prefecture-level power supply company；110kV/35kV substation/power plant/high voltage customer must be arranged management unit and be
Power supply company, districts and cities, run unit are power supply company at county level.
The tables of data for establishing each entity in the database, the data that will acquire are saved in database, gkksh_arch_
Susb: substation/power plant, gkksh_arch_cons: high voltage customer, gkksh_arch_line: route, gkksh_arch_
Switch: switch, gkksh_arch_mp: user's stoichiometric point, wherein switch table structure is as shown in Figure 2.
Due to being based on the position of the switch to the identification switched in substation, the switch that must be intercepted in switch names first is compiled
Number (be not obtain source data switch number), such as 220kV Feng Ling substation a main transformer high side switch switch
Number is: cz921, switch names are: 2801 breaker of #1 main transformer, and 2801 must be intercepted out from switch names and is compiled as switch
Number.
The position of the switch is judged according to the switch number intercepted out, and is filled into the position field (1: main transformer of switch list
High-pressure side, 2: main transformer medium voltage side, 3: main transformer low-pressure side), according to switch number and its voltage class, affiliated power station voltage class,
It can determine that main transformer high, medium and low voltage side switchs, see the table below shown in 1:
Table 1: switch number and its voltage class, the affiliated power station voltage class table of comparisons
It establishes subregion, divide model table (gkksh_model_region, gkksh_model_volt), table structure such as Fig. 3,
Shown in 4.
2, critical point identification process
As shown in Figure 1, writing code according to critical point identification process and realizing logic, also for the identification of power plant/high voltage customer
It must pay special attention to it to settle accounts position to be in power plant/user side, or in transformer substation switch side, it is different to settle accounts position, recognition result
In stoichiometric point information it is also different, such as two power stations 10kV of Shitai County power supply company: combined plant and clean brook power station, connection
The clearing position in power station is closed in Power Plant Side, corresponding critical point number are as follows: 50222360708, critical point title is combined plant, clean brook
The clearing position transformer substation switch side in power station, corresponding critical point are all 116 breakers of substation, power station, clean brook of 110kV seven.
3, abnormity diagnosis process
Subregion, partial pressure critical point list are exported from same period line loss system, with critical point recognition result gkksh_model_
Region, gkksh_model_volt are compared, main comparison model configuration quantity, stoichiometric point number, forward and reverse configuration, confession
Electric unit, by electric unit, divide model, supply voltage, power receiving voltage must also be compared, do not meet critical point standard to be diagnosed to be
Allocation models, diagnosis process can also realize that diagnostic result is showed by prototype system by code, service guidance management
Personnel carry out critical point configuration.
In the present invention, related technical term paraphrase:
1, critical point: between electricity power enterprise and enterprises of managing electric wire netting, between different enterprises of managing electric wire netting, power grid enterprises and electricity consumption
Electric energy between client, between enterprises of managing electric wire netting and its affiliated power supply enterprise between different power supply enterprises exchanges point, and
For analysis of economic index, the metering points of electric energy of examination inside power supply enterprise, referred to as " critical point ".
2, power plant's online critical point: the electricity between genco's (factory stands) and system enterprises of managing electric wire netting, State Grid Corporation of China
It can exchange a little.
3, subregion critical point: to administered power grid by division of the power supply area be several administrative units carry out line loss statistics,
Analysis and the corresponding each zone boundary electric quantity metering point of examination, including power generation online critical point in the region, provincial power supply critical point,
Ground level power supply critical point, power supply critical point at county level, user critical point, distributed generation resource critical point etc..
4, it divides critical point: administered power grid is carried out corresponding to line loss statistics, analysis and examination by different voltages grade
Each voltage class boundary electric quantity metering point, including across unit critical point, this voltage class power plant, our unit online critical point, our unit across
Voltage class critical point, our unit this voltage class user critical point etc..
5, same period line loss system: integrated electricity and line loss management system of local electric network, referred to as " same period line loss system ", it is integrated with
SCADA, electric energy system, PMS2.0 system, generalized information system, SG186 system, power information acquisition system data, realize four points
Line loss calculation (subregion, partial pressure, subelement, Fen Tai).
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of critical point identification and abnormality diagnostic method based on critical point standard, which comprises the following steps:
(1) base profile data are obtained, are saved in database, including substation, power plant, 35kV and above high pressure
User, transmission line of electricity, stand in switch, user's stoichiometric point, power plant/user settle accounts point；
(2) substation, power plant, the setting of high voltage customer area attribute, including affiliated unit, management unit, run unit；
(3) number in switch names is obtained, determines critical point position, including main transformer high side switch, main transformer according to rule
Medium voltage side switch, main transformer low-pressure side switch, power plant critical point, user critical point of the setting clearing point in power transformation side, determine that clearing point exists
Power Plant Side/user side stoichiometric point；
(4) subregion switched in substation, partial pressure critical point are identified according to critical point standard；
(5) according to critical point standard identification power plant's online critical point, province's tune/ground tune/tune power plant, county, 10kV power plant are distinguished by voltage class
For tune power plant, county, 35kV power plant is Di Tiao power plant, and 110kV and above are to save to adjust power plant, by clearing critical point position point
For Power Plant Side clearing and transformer substation side clearing；
(6) according to critical point standard identify high voltage customer critical point, high voltage customer by clearing critical point position can be divided into user side clearing and
Transformer substation side clearing；
(7) same period line loss system partitioning, partial pressure critical point list are obtained, by power supply unit/by electric unit, supply voltage/by electricity
Voltage, stoichiometric point number, forward and reverse plus-minus relation information, are compared with recognition result, find out the subregion configured extremely, partial pressure
Model；
(8) same period line loss system partitioning, partial pressure line loss model list are exported, by critical point recognition result and same period configuring condition into
Row compare, by same period polygamy, less match, the model of configuration error is shown, carry out confirmation modification by administrative staff.
2. a kind of critical point identification and abnormality diagnostic method based on critical point standard according to claim 1, which is characterized in that
The specific division rank of step (2) the area attribute setting are as follows: 220kV substation/power plant/high voltage customer, 110kV power plant palpus
Setting affiliated unit is provincial power supply company, and management unit is prefecture-level power supply company；110kV/35kV substation/power plant/height
It is power supply company, districts and cities that management unit, which must be arranged, in pressure user, and run unit is power supply company at county level.
3. a kind of critical point identification and abnormality diagnostic method based on critical point standard according to claim 1, which is characterized in that
Step (4) subregion, partial pressure critical point specifically include that 1. 220kV transforming plant main transformer high side switch for save over the ground subregion critical point,
Across unit 220kV turns 220kV partial pressure critical point；2. 110kV, 35kV main transformer mesolow side switch turn in 220kV substation for 220kV
110kV/35kV our unit divides critical point, and 35kV main transformer medium voltage side switch is that 110kV turns 35kV our unit point in 110kV substation
Press critical point；3. 220kV/110kV/35kV stands, interior 10kV main transformer low-pressure side switch is the county Di Dui subregion critical point, across unit 10kV turns
10kV divides critical point；4. for suburban area, there are substation low-voltage side bus a portions to switch to the power supply of other companies
Critical point is identified as county and turns 10kV partial pressure critical point to county critical point, across unit 10kV.
4. a kind of critical point identification and abnormality diagnostic method based on critical point standard according to claim 1, which is characterized in that
The recognition rule at step (5) power plant's online critical point are as follows: 1. the clearing critical point of county's tune power plant is identified as in unit power plant at county level
Net subregion/partial pressure critical point；The clearing critical point of ②Di Tiao power plant is ground level unit online critical point；3. saving and adjusting power plant's clearing critical point is to save
Grade unit online critical point saves critical point over the ground；④Di Tiao power plant and the sale of electricity direction for saving tune power plant are treated by individual line subscriber.
5. a kind of critical point identification and abnormality diagnostic method based on critical point standard according to claim 1, which is characterized in that
The recognition rule at step (6) the high voltage customer critical point are as follows: 1. 220kV user settles accounts point to save critical point and Di Dui Xian Guan over the ground
Mouth, across unit 220kV turn 220kV partial pressure critical point；2. 110kV/35kV user settles accounts the county Dian Weididui critical point, across the same voltage of unit
Grade produces partial pressure critical point.
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|---|---|---|---|---|
| CN102044868A (en) * | 2009-10-14 | 2011-05-04 | 西安裕日软件有限公司 | Method and device for monitoring and analyzing line loss of power grid |
| CN102545213A (en) * | 2012-01-11 | 2012-07-04 | 藁城市供电公司 | System and method for managing line loss of power grid in real time |
| CN105468820A (en) * | 2015-11-13 | 2016-04-06 | 国家电网公司 | Real time identifying method for line loss transaction of power distribution network |
| CN107256443A (en) * | 2017-04-18 | 2017-10-17 | 国网信通亿力科技有限责任公司 | Line loss real-time computing technique based on business and data integration |
| CN107505537A (en) * | 2017-09-04 | 2017-12-22 | 贵州电网有限责任公司电力科学研究院 | A kind of failure analysis methods abnormal based on line loss |
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- 2019-07-10 CN CN201910620645.8A patent/CN110334100A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044868A (en) * | 2009-10-14 | 2011-05-04 | 西安裕日软件有限公司 | Method and device for monitoring and analyzing line loss of power grid |
| CN102545213A (en) * | 2012-01-11 | 2012-07-04 | 藁城市供电公司 | System and method for managing line loss of power grid in real time |
| CN105468820A (en) * | 2015-11-13 | 2016-04-06 | 国家电网公司 | Real time identifying method for line loss transaction of power distribution network |
| CN107256443A (en) * | 2017-04-18 | 2017-10-17 | 国网信通亿力科技有限责任公司 | Line loss real-time computing technique based on business and data integration |
| CN107505537A (en) * | 2017-09-04 | 2017-12-22 | 贵州电网有限责任公司电力科学研究院 | A kind of failure analysis methods abnormal based on line loss |
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Application publication date: 20191015 |