CN104392288A - High-voltage circuit breaker component maintaining method - Google Patents
High-voltage circuit breaker component maintaining method Download PDFInfo
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- CN104392288A CN104392288A CN201410779487.8A CN201410779487A CN104392288A CN 104392288 A CN104392288 A CN 104392288A CN 201410779487 A CN201410779487 A CN 201410779487A CN 104392288 A CN104392288 A CN 104392288A
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000011002 quantification Methods 0.000 claims abstract description 19
- 238000012502 risk assessment Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000007246 mechanism Effects 0.000 claims description 21
- 238000012423 maintenance Methods 0.000 claims description 20
- 238000007689 inspection Methods 0.000 claims description 13
- 230000008439 repair process Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000004146 energy storage Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 238000011156 evaluation Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 6
- 239000012212 insulator Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 229910052573 porcelain Inorganic materials 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 238000005304 joining Methods 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000011058 failure modes and effects analysis Methods 0.000 abstract description 3
- 229910018503 SF6 Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
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Abstract
The invention discloses a high-voltage circuit breaker component maintaining method. The method comprises the following steps: performing module division on a circuit breaker by adopting an FMEA (failure mode and effect analysis) in combination with functions and components of the circuit breaker, establishing a risk assessment index system for a high-voltage circuit breaker component on the basis of risk assessment, and performing weight determining on risk assessment indexes by using an analytic hierarchy process; then establishing an importance level assessment index system for the circuit breaker component by applying risk quantification values of failure modes of a weighted grey relationship analysis model to obtain an importance level index of the circuit breaker component; establishing a two-dimensional relationship model between the failure risk degree and the importance of the component according to importance level indexes and the risk quantification values of the circuit breaker component, and taking the degree of urgency of needing maintaining equipment as an intermediate quantity to finally obtain a standard maintaining sequence value.
Description
Technical field
The invention belongs to converting equipment running status evaluation areas, particularly a kind of primary cut-out component inspection method.
Background technology
Primary cut-out (or claim high-voltage switch gear) is the dedicated electric appliance being switched on or switched off high-tension circuit under normal or failure condition.It plays control action in high-tension circuit, is one of important electric elements in high-tension circuit.It not only can cut off or no-load current in closed high circuit and load current; and when system jam by the effect of relay protection; cut off overload electric current and short-circuit current, it has quite perfect arc extinguishing structure and enough cutout abilities.
The primary structure of primary cut-out is divided into substantially: water diversion part, arc extinguishing part, insulated part, operating mechanism part.The main Types of high-voltage switch gear is divided into by arc-extinguishing medium: oil-break, air-break, vacuum circuit breaker, sulfur hexafluoride breaker, solid gas generant isolating switch, magnetic blast breaker etc.Its fault type comprises: seal fails fault; Action failure fault; Insulation damages or bad; The fault etc. of arc extinction part contact.
Whether the plan of primary cut-out component inspection and maintenance policy are formulated scientific and reasonable, have direct impact for isolating switch in the economy of operation phase and reliability.There is the problem that maintenance is not enough and maintenance is superfluous in tradition preventative maintenance, primary cut-out overall life cycle cost costly, needs to determine that new repair method improves primary cut-out reliability of operation and economy effectively.
Summary of the invention
In view of above content, the present invention, according to the rule of isolating switch in whole service life cycle, is optimized from parts risk quantification and importance degree index two Strategies of Maintenances of aspect to circuit breaker components; Simultaneously based on the real-time running state of isolating switch, analyze from component-level, and for multiple Dimensionality optimizations such as economy, reliability and maintenance resources, formulate and dynamically overhaul order policies, propose following technical scheme:
A kind of primary cut-out component inspection method, it comprises following steps:
Step one, adopt fault modes and effect analysis (FMEA) in conjunction with the building block of isolating switch and function, isolating switch is divided, obtains the chife failure models sorted table of complete primary cut-out parts.
The Risk Assessment Index System of primary cut-out parts is set up in the risk assessment of step 2, employing fault modes and effect analysis (FMEA), and utilizes analytical hierarchy process for Risk Evaluation Factors tax power; Then the Grey Relation Analysis Model applying weighting calculates the risk quantification value W of each fault mode.
Step 3, consideration based on relevance between each factor of primary cut-out Degrees of Importance of Components, to reduce, for the purpose of the complicacy analyzed, to set up circuit breaker components importance degree assessment indicator system, obtain the importance degree R of circuit breaker components.
Step 4, foundation circuit breaker components importance R and parts risk quantification value W, adopt the form that centesimal system standards of grading and ranking two aspect combine, set up component failure risk and importance two-dimentional relation model, finally obtain the P value of standard repair order, by P value size complex optimum circuit breaker components maintenance order, and overhaul according to each parts of P value to primary cut-out.
Preferably, in step one, the division of isolating switch is comprised: body insulating unit, operating mechanism unit, SF6 gas-insulated unit, mechanism case and osculating element, base structure unit, energy-storage units, switching-on mechanism unit, brake separating mechanism unit, secondary component unit, mechanical joint transmission unit ten critical piece compositions.
Preferably, the fault mode of body insulating unit comprises at least one in the damage of insulation against ground bad and porcelain piece.
Preferably, the fault mode of operating mechanism unit comprise cut-off off-capacity and loop resistance exceed standard at least one.
Preferably, SF
6the fault mode of gas-insulated unit comprises SF
6purity decline, Moisture high UCL, SF
6pressure anomaly reduces, SF
6pressure anomaly raise at least one.
Preferably, former norm formula that is in-house and osculating element comprise that anti-condenser does not generate heat, mechanism case water inlet, at least one in a joining seam loose contact.
Preferably, the fault mode of rack construction unit comprises at least one in the corrosion of foundation means support, rack earth poor flow, pedestal inclination.
Preferably, the fault mode of energy-storage units comprise energy storage motor can not energy storage.
Preferably, the fault mode of switching-on mechanism unit comprise closing locking function fail to realize, close a floodgate during the same period exceeds standard, closing speed exceeds standard, closing time exceeds standard at least one.
Preferably, the fault mode of brake separating mechanism unit comprise that opening time exceeds standard, opening velocity exceeds standard, three separating brakes to exceed standard the same period at least one.
Preferably, the fault mode of secondary component unit comprises secondary component damage.
Preferably, the fault mode of mechanical joint transmission unit comprise can not realize rotate, rotating shaft sealing damage at least one.
Preferably, the risk evaluation system in described step 2 comprises at least one parameter in Failure Characteristic Parameter p, the risk order of severity S of all parts, risk detectivity D and maintenance cost F.
Preferably, the risk evaluation system in described step 2 comprises Failure Characteristic Parameter p, the risk order of severity S of all parts, risk detectivity D and maintenance cost F tetra-parameters.
Preferably, risk quantification value W=w is defined
1p+w
2s+w
3d+w
4f; Wherein w
1, w
2, w
3, w
4be respectively the Failure Characteristic Parameter p of all parts, risk order of severity S, the weight of risk detectivity D, upkeep cost F.
Preferably, circuit breaker components importance degree assessment indicator system comprises at least one in reliability index, economic index, monitoring index, Maintainability index four aspect, grade separation is formulated according to These parameters, compose on the basis of power in actual measurement assessment, introduce the impact that trapezoidal fuzzy membership functions reduces uncertain factor in measuring process, obtain the importance degree index R of circuit breaker components.
Preferably, described reliability index comprises and lost efficacy on the impact of personnel and environment, lost efficacy on the impact of systemic-function and failure frequency; Economic index comprises maintenance cost, the loss caused of losing efficacy; Monitoring property index refers to the monitoring property broken down; Maintainability index comprises the complexity of idle time that fault causes and maintenance.
Preferably, in described step 4, according to the importance degree index R of the risk quantification value W obtained in step 2, three and circuit breaker components, obtain primary cut-out system R-W to scheme, definition d is the pressing degree that equipment needs to carry out keeping in repair, by the importance degree index R of circuit breaker components and risk quantification value W on R-W figure determined point to the distance of X-axis
included angle changes importance degree index R and risk quantification W to the weighing factor determining service sequence; The scoring of definition P indication equipment service sequence:
Finally obtain the P value of standard repair order.
Preferably, the Failure Characteristic Parameter p of isolating switch all parts comprises: running environment pollution degree, SF
6density, cut-off peak value of short, accumulative mechanically actuated number of times, run age, switching-on resistance value, SF
6gas content, SF
6humidity, SF
6leakage Gas year leak rate, environment temperature, infrared measurement of temperature, divide-shut brake coil direct current resistance, galvanic circle resistance, the asynchronous time-parameters of the alternate combined floodgate of isolating switch, the asynchronous time-parameters of the alternate separating brake of isolating switch, closing speed, opening velocity, SF
6the dielectric loss of shnt capacitor, subsidiary loop and control loop insulation resistance, the operation voltage of making electromagnet, the operation voltage of tripping electromagnet, insulator, porcelain knob, insulator visual examination between the electric capacity of shnt capacitor, fracture between the insulation resistance of shnt capacitor, fracture between pressure meter calibration, contact relative wear amount, fracture.
Accompanying drawing explanation
Fig. 1 is primary cut-out fault Tree model schematic of the present invention;
Fig. 2 is importance degree assessment indicator system figure of the present invention;
Fig. 3 is that primary cut-out system R-W of the present invention schemes.
Embodiment
For clearly showing the object, technical solutions and advantages of the present invention, existing by reference to the accompanying drawings 1 to 3 and illustrative examples, in further detail the present invention is described.Should be appreciated that illustrative examples described herein only in order to explain the present invention, do not limit the scope of application of the present invention.
Embodiment one:
Based on the maintenance order defining method of a kind of Switch equipment of the present invention based on parts risk quantification and importance degree index, concrete implementation step is as follows:
Step 1: in view of primary cut-out fault criteria for classifying disunity, the various situation of fault type, adopt fault modes and effect analysis (Failure Mode and Effects Analysis, FMEA) in conjunction with building block and the function of isolating switch, following division is made: body, operating mechanism, SF
6gas-insulated unit, mechanism case and osculating element, base structure, energy-storage units, switching-on mechanism, brake separating mechanism, secondary component, mechanical joint transmission ten critical piece compositions, obtain the chife failure models sorted table of complete primary cut-out parts.
By setting up the corresponding relation between dependent failure characteristic parameter and component failure modes, adopting the probability of malfunction rating method based on fuzzy membership functions to calculate Failure Characteristic Parameter probability of happening and carrying out the Failure Characteristic Parameter p of qualitative assessment isolating switch all parts in conjunction with the weighted value of fault mode and characteristic quantity.Characteristic parameter totally 26, as shown in appendix 1; Fault mode characteristic of correspondence parameter and its weight are as shown in subordinate list 2.
Table 1 circuit breaker components Failure Characteristic Parameter collection
| Coding | Characteristic parameter | Coding | Characteristic parameter |
| 1 | Running environment pollution degree | 14 | The asynchronous time-parameters of the alternate combined floodgate of isolating switch |
| 2 | SF6 density (under standard state) kg/m 3 | 15 | The asynchronous time-parameters of the alternate separating brake of isolating switch |
| 3 | Cut-off peak value of short | 16 | Closing speed |
| 4 | Accumulative mechanically actuated number of times | 17 | Opening velocity |
| 5 | Run the age | 18 | SF 6Pressure meter calibration |
| 6 | Switching-on resistance value | 19 | Contact relative wear amount |
| 7 | SF 6Gas content | 20 | The insulation resistance of shnt capacitor between fracture |
| 8 | SF 6Humidity (20 DEG C of volume fractions) 10 -6 | 21 | The electric capacity of shnt capacitor between fracture |
| 9 | SF 6Leakage Gas year leak rate | 22 | The dielectric loss of shnt capacitor between fracture |
| 10 | Environment temperature | 23 | Subsidiary loop and control loop insulation resistance |
| 11 | Infrared measurement of temperature | 24 | The operation voltage (multiple) of making electromagnet |
| 12 | Divide-shut brake coil direct current resistance | 25 | The operation voltage of tripping electromagnet |
| 13 | Galvanic circle resistance | 26 | Insulator, porcelain knob, insulator visual examination |
The corresponding relation of table 2 circuit breaker components fault mode and characteristic quantity
Step 2: the Risk Assessment Index System adopting the risk assessment of FMFA to set up primary cut-out parts to comprise fault rate, the risk order of severity, risk detectivity and maintenance cost, and utilize analytical hierarchy process to compose power for Risk Evaluation Factors; Then the Grey Relation Analysis Model applying weighting calculates the risk indicator of each fault mode.
Risk order of severity S: from circuit breaker components fault, whether human life's safety is jeopardized to the influence degree of power supply reliability, the damaged condition that may cause, fault according to actual measured results, the aspect such as economic loss that welding, stoppage in transit cause and corresponding rehabilitation expense determines fault severity level score value; Risk detectivity D: the length that its leading indicator has fault recall rate, Percent Isolated, misdiagnosis rate, fault mistake isolation rate, fault resolution, the simplicity of detection method, detection is taken time and the required expense of detection etc.; Maintenance cost F: the expense of maintenance of equipment and stopping transport the economic loss causing that system operation mode changes, stand-by equipment puts into operation and even shut down and cause because of equipment.S, D, F obtain by Quantitative marking standard, as shown in subordinate list 3.
Risk quantification W=w
1p+w
2s+w
3d+w
4f; w
1, w
2, w
3, w
4for the weight that p, S, D, F are obtained by analytical hierarchy process, convert the value of W to centesimal system.
Table 3 circuit breaker components S, D, F quantitatively evaluating table
| The risk order of severity | Risk detectivity | Maintenance cost (% of equipment price) | Quantitatively evaluating score value |
| Very serious | Return factory | 90-100 | 0.8-1.0 |
| Seriously | Hang cover | 60-90 | 0.6-0.8 |
| Moderate | Comprehensive descision | 40-60 | 0.4-0.6 |
| Small | Detect | 10-40 | 0.2-0.4 |
| Can ignore | Intuitively | 0-10 | 0-0.2 |
Step 3: the importance degree R asking for circuit breaker components: according to the essential information of parts, a suitable grade separation is formulated in reliability, economy, monitoring, maintainability four aspect index separately (as shown in Figure 2), and composing on the basis of power according to actual measurement assessment, introduce the impact that trapezoidal fuzzy membership functions reduces uncertain factor in measuring process.
Step 4: primary cut-out system R-W schemes as shown in Figure 3, finally obtains the P value of standard repair order, i.e. P value order from big to small, and included angle changes importance R and risk quantification W to the weighing factor determining service sequence.Definition d is that on R-W figure, determined point is to the distance of X-axis by the importance R of circuit breaker components and risk quantification W, and indication equipment needs the pressing degree carrying out keeping in repair,
The scoring of definition P indication equipment service sequence:
Embodiment two:
The foregoing is only preferred embodiments of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a primary cut-out component inspection method, it comprises following steps:
Step one, adopt fault modes and effect analysis (FMFA) in conjunction with the building block of isolating switch and function, isolating switch is divided, obtains complete primary cut-out unit failure tree-model;
The Risk Assessment Index System of primary cut-out parts is set up in the risk assessment of step 2, employing fault modes and effect analysis (FMFA), and utilizes analytical hierarchy process for Risk Evaluation Factors tax power; Then the Grey Relation Analysis Model applying weighting calculates the risk quantification value W of each fault mode;
Step 3, consideration based on relevance between each factor of primary cut-out Degrees of Importance of Components, to reduce, for the purpose of the complicacy analyzed, to set up circuit breaker components importance degree assessment indicator system, obtain the importance degree index R of circuit breaker components;
Step 4, foundation circuit breaker components importance degree index R and risk quantification value W, set up component failure risk and importance two-dimentional relation model, need the pressing degree carrying out keeping in repair as middle parameter using equipment, finally obtain the P value of standard repair order, by P value size complex optimum circuit breaker components maintenance order, and overhaul according to each parts of P value to primary cut-out.
2. primary cut-out component inspection method as claimed in claim 1, is characterized in that: preferred, the circuit breaker components in described step one mesohigh circuit breaker components fault tree models comprises: body insulating unit, operating mechanism unit, SF
6gas-insulated unit, mechanism case and osculating element, base structure unit, energy-storage units, switching-on mechanism unit, brake separating mechanism unit, secondary component unit, mechanical joint transmission unit.
3. primary cut-out component inspection method as claimed in claim 2, it is characterized in that: the fault type in the unit failure tree-model in described step one comprises: the fault mode of body insulating unit comprises at least one in the bad and porcelain piece damage of insulation against ground, and/or the fault mode of operating mechanism unit comprise cut-off off-capacity and loop resistance exceed standard at least one, and/or SF
6the fault mode of gas-insulated unit comprises SF
6purity decline, Moisture high UCL, SF
6pressure anomaly reduces, SF
6pressure anomaly raise at least one, and/or former norm formula that is in-house and osculating element comprises anti-condenser and does not generate heat, mechanism case is intake, at least one in a joining seam loose contact, and/or the fault mode of rack construction unit comprises the corrosion of foundation means support, rack earth poor flow, pedestal tilt at least one, and/or the fault mode of energy-storage units comprise energy storage motor can not energy storage, and/or the fault mode of switching-on mechanism unit comprise closing locking function fail realize, close a floodgate and exceed standard the same period, closing speed exceeds standard, at least one during closing time exceeds standard, and/or the fault mode of brake separating mechanism unit comprises opening time and exceeds standard, opening velocity exceeds standard, at least one during three separating brakes exceed standard the same period, and/or the fault mode of secondary component unit comprises secondary component damage, and/or the fault mode of mechanical joint transmission unit comprise can not realize rotate, rotating shaft sealing damage at least one.
4. primary cut-out component inspection method as claimed in claim 1, is characterized in that: the risk evaluation system in described step 2 comprises Failure Characteristic Parameter p, risk order of severity S, the risk detectivity D and maintenance cost F of all parts.
5. primary cut-out component inspection method as claimed in claim 4, is characterized in that: in described step 2, definition risk quantification value W=w
1p+w
2s+w
3d+w
4f; Wherein w
1, w
2, w
3, w
4be respectively the Failure Characteristic Parameter p of all parts, risk order of severity S, the weight of risk detectivity D, upkeep cost F.
6. primary cut-out component inspection method as claimed in claim 1, it is characterized in that: in step 3, isolating switch Degrees of Importance of Components assessment indicator system comprises reliability index, economic index, monitoring index, Maintainability index four aspect, grade separation is formulated according to These parameters, compose on the basis of power in actual measurement assessment, introduce the impact that trapezoidal fuzzy membership functions reduces uncertain factor in measuring process, obtain the importance degree index R of circuit breaker components.
7. primary cut-out component inspection method according to claim 6, is characterized in that: described reliability index comprises and lost efficacy on the impact of personnel and environment, lost efficacy on the impact of systemic-function and failure frequency; Economic index comprises maintenance cost, the loss caused of losing efficacy; Monitoring property index refers to the monitoring property broken down; Maintainability index comprises the complexity of idle time that fault causes and maintenance.
8. primary cut-out component inspection method as claimed in claim 1, it is characterized in that: in described step 4, according to the importance degree index R of the risk quantification value W obtained in step 2, three and circuit breaker components, obtain primary cut-out system R-W to scheme, definition d is the pressing degree that equipment needs to carry out keeping in repair, by the importance degree index R of circuit breaker components and risk quantification value W on R-W figure determined point to the distance of X-axis
included angle changes importance degree index R and risk quantification W to the weighing factor determining service sequence; The scoring of definition P indication equipment service sequence:
Finally obtain the P value of standard repair order.
9. primary cut-out component inspection method as claimed in claim 4, is characterized in that: the Failure Characteristic Parameter p of isolating switch all parts comprises: running environment pollution degree, SF
6density, cut-off peak value of short, accumulative mechanically actuated number of times, run age, switching-on resistance value, SF
6gas content, SF
6humidity, SF
6leakage Gas year leak rate, environment temperature, infrared measurement of temperature, divide-shut brake coil direct current resistance, galvanic circle resistance, the asynchronous time-parameters of the alternate combined floodgate of isolating switch, the asynchronous time-parameters of the alternate separating brake of isolating switch, closing speed, opening velocity, SF
6the dielectric loss of shnt capacitor, subsidiary loop and control loop insulation resistance, the operation voltage of making electromagnet, the operation voltage of tripping electromagnet, insulator, porcelain knob, insulator visual examination between the electric capacity of shnt capacitor, fracture between the insulation resistance of shnt capacitor, fracture between pressure meter calibration, contact relative wear amount, fracture.
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| CN105445657A (en) * | 2015-11-26 | 2016-03-30 | 国家电网公司 | Breaker operating mechanism state diagnosis method based on grey relational analysis |
| CN105956263A (en) * | 2016-04-29 | 2016-09-21 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for optimizing insulating property of 500kV porcelain knob type circuit breaker for alternating current filter |
| CN106158519A (en) * | 2016-08-29 | 2016-11-23 | 孟玲 | A kind of intelligent moulded case circuit breaker maintenance system |
| CN106908188A (en) * | 2017-05-03 | 2017-06-30 | 南京科瑞电力科技有限公司 | A kind of GIS air pressure inside supervising devices based on temperature sensor |
| CN108808673A (en) * | 2018-07-10 | 2018-11-13 | 国网安徽省电力有限公司 | A kind of determination method and system of protective device risk |
| CN109613380A (en) * | 2019-02-19 | 2019-04-12 | 广东电网有限责任公司 | On-pole switch complete set of equipments method for evaluating state, device, system and server |
| CN109613380B (en) * | 2019-02-19 | 2020-11-06 | 广东电网有限责任公司 | State evaluation method, device and system for pole-mounted switch complete equipment and server |
| CN111982198A (en) * | 2020-08-21 | 2020-11-24 | 中国南方电网有限责任公司超高压输电公司南宁局 | State maintenance method and system for high-voltage circuit breaker |
| CN113537523A (en) * | 2021-07-16 | 2021-10-22 | 陕西省地方电力(集团)有限公司延安供电分公司 | Substation equipment state maintenance and decision-making assisting method |
| CN114325377A (en) * | 2022-01-04 | 2022-04-12 | 中车株洲电力机车有限公司 | System and method for diagnosing and predicting fault of vacuum main circuit breaker and locomotive |
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