CN106373724B - A kind of maintaining method of electric power system - Google Patents
A kind of maintaining method of electric power system Download PDFInfo
- Publication number
- CN106373724B CN106373724B CN201610731587.2A CN201610731587A CN106373724B CN 106373724 B CN106373724 B CN 106373724B CN 201610731587 A CN201610731587 A CN 201610731587A CN 106373724 B CN106373724 B CN 106373724B
- Authority
- CN
- China
- Prior art keywords
- module
- control module
- pressure gauge
- transformer
- power system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/404—Protective devices specially adapted for fluid filled transformers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
- H01F2027/406—Temperature sensor or protection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention relates to a kind of maintaining method of electric power system, belong to power supply technique field, key step includes for the numerical value that liquid level gauge, pressure gauge, temperature-measuring module, moisture measurement module and acid number measurement module measure being respectively sent to the input module of on-line maintenance monitoring platform, above numerical value is sent to control module by input module again, judgement is compared in control module, when more than the storage value of control module, respective alarm and position indicator is controlled to act respectively.The present invention has and can safeguard monitoring to transformer progress real-time online, avoids due to the advantages of transformer fault influences and lost to caused by power system.
Description
Technical field
The present invention relates to a kind of maintaining method of electric power system, belong to power supply technique field, be particularly suitable for use in electric power system
In transformer safeguard.
Background technology
Electric power system refers to
System, its function is that the primary energy of nature is passed through into generation power device（Mainly include boiler, steam turbine, generator and
Power plant's accessory production system etc.）Electric energy is changed into, then is supplied power to through defeated, transformer substation system and distribution system in each load
The heart, it is regional economy and people's lives service by various equipment reconverts into various forms of energy such as power, heat, light.
Electric energy is secondary energy sources, and the development of electric power system should consider the resources supplIes of primary energy, consider electric energy again
The condition such as the situation of demand and relevant material technology equipment, and associated economic condition and index.In social total energy
In the consumption in source, electric energy proportion shows a rising trend all the time, and the development of informationized society further increases the dependence journey to electric energy
Degree.To meet user to electric energy ever increasing need, it is necessary to develop power system on the basis of planning of science activities.Electric energy is supplied
Deficiency or power supply is unreliable can all influence the development of national economy, or even causes serious economic loss；Generate electricity and it is defeated, with electric energy
Power surplus further means that the reduction of Electricity Investment benefit, so as to influence cost of electricity-generating.Therefore, it is necessary to carry out comprehensive rule of power system
Draw, to improve the foresight and science that develop power system.
Formulating electric power system planning first must be according to the trend of the national economic development（Or plan）, carry out Electric Load Forecasting
Survey and primary energy Development allocation, then consider the requirement of reliability and economy again, make respectively power source developing plan,
Power network planning and distribution planning.
Distribution planning is primarily referred to as determining the capacity and position, distribution network structure, distribution line lead of distribution substation
Section selection, voltage level and Measures of Reactive Compensation, and reliability verification etc., ensure power system security, stably, economically
Operation.Main working tasks include：First, the monitoring of normal operating condition, record, normal operating (maintain frequency automatically with adjustment
With voltage etc.)；2nd, abnormality and alarm, protection, emergent control and accident record under accident condition；3rd, operational management,
Short-term load forecasting is carried out, generation schedule is formulated, realizes economic load dispatching etc..
Transformer belongs to main application component in distribution link, is to change alternating voltage using the principle of electromagnetic induction
Device, main member are primary coil, secondary coil and iron core（Magnetic core）.The major function of transformer has：Voltage transformation, electric current
Conversion, impedance conversion, isolation, voltage stabilizing（Magnetic saturation transformer）Deng.Transformer can be divided into, according to use,：Distribution transformer, Quan Mi
Seal transformer, combined transformer, dry-type transformer, oil-filled transformer, single-phase transformer, furnace transformer, rectifier transformer
Device etc..
Large Oil immersion transformer is the core of power system, in long-term operation, is especially under mal-condition,
The electrical endurance of transformer and mechanical life can drastically decline.Failing to finding the insulation fault of transformer in time, not only can
The safe operation of whole transformer station is influenceed, while can also cause large area blackout, brings serious economic loss, or even meeting
Personal safety is threatened, therefore, it is necessary to maintenance is monitored to the insulating oil of oil-filled transformer.
The conventional maintenance metering system of transformer oil mainly uses off-line measurement, i.e., annual periodically to each transformer
Insulating oil carries out collection in worksite, and the transformer oil sample of collection in worksite is taken back into laboratory, measured in laboratory, is waited to be measured
As a result after occurring, then experimental data is sent to the manager of each transformer.Existing transformer maintenance mode is primarily present
Problems with：First, using off-line measurement, transformer insulation oil is taken back into the other conditions such as laboratory measurement, the temperature of insulating oil
With being changed during sampling, it is difficult to obtain accurate measured value, it is impossible to accurately reflect the practical operation situation of transformer；
2nd, the maintenance for transformer belongs to discrete maintenance state, i.e., carrying out each independent measurement individually for each transformer ties up
Shield is, it is necessary to which several staff carry out attended operation, and operating efficiency is low, worker workload is big；3rd, it is existing to safeguard measurement
The simply annual maintenance for periodically carrying out discontinuous, it is impossible to which the work operation to transformer is monitored in real time, it is difficult to transformer
Failure given warning in advance, once also, transformer catastrophic failure occurs, because quantity is more, it is necessary to investigate one by one,
Maintenance efficiency is low.
The content of the invention
, can be to transformation the invention provides a kind of maintaining method of electric power system to solve technical deficiency above
Device carries out real-time online and safeguards monitoring, avoids because transformer fault influences and lost to caused by electric power system.
Technical scheme is as follows：A kind of maintaining method of electric power system, is mainly included the following steps that：
Step 1, the oil inlet of transformer is connected by oil feed line with the oil-out of repairing tank, by going out for transformer
Hydraulic fluid port is connected by outlet line with the oil return opening of repairing tank；
Step 2, fills transformer insulation oil into repairing tank, the main component of the transformer insulation oil include alkane,
Naphthene series's saturated hydrocarbons and aromatic series unsaturated hydrocarbons, the shining point of the transformer insulation oil are not less than 135 DEG C, and the transformer is exhausted
The freezing point of edge oil is not higher than -25 DEG C, and the acid number of the transformer insulation oil is no more than 0.05mgKOH/g；
Step 3, liquid level gauge is installed on repairing tank, filter, pressure gauge one and pressure gauge are installed in outlet line
Two, the pressure gauge one and pressure gauge two are located at the both sides of filter respectively, using circuit by pressure gauge one, pressure gauge two and liquid
Input module of the position meter respectively with on-line maintenance monitoring platform is connected；
Step 4, transformer and measurement maintenance instrument are connected into loop using inlet pipe and measurement return pipe is measured, tieed up in measurement
Protect and temperature-measuring module, moisture measurement module and acid number measurement module be installed on instrument, using circuit by temperature-measuring module, contain
The input module of measure of water module and acid number measurement module respectively with on-line maintenance monitoring platform is connected；
Step 5, the input module of on-line maintenance monitoring platform send the measured value of liquid level gauge to on-line maintenance monitoring and put down
The control module of platform, control module judges the measured value of liquid level gauge compared with the storage value of control module, works as liquid level gauge
Measured value exceed control module storage value when, control module control on-line maintenance monitoring platform output module liquid level gauge
Alarm and position indicator action；
Step 6, input module send the measured value of pressure gauge one and pressure gauge two to control module, and control module will
The measured value of pressure gauge one and pressure gauge two makes the difference and judged compared with the storage value of control module, when pressure gauge one and pressure
When the difference of power meter two exceedes the storage value of control module, the filter alarm of control module control output module and position show
Show that device acts；
Step 7, input module pass the measured value of temperature-measuring module, moisture measurement module and acid number measurement module
Control module is given, control module distinguishes the measured value of temperature-measuring module, moisture measurement module and acid number measurement module
Judge compared with the storage value of control module, when temperature-measuring module, moisture measurement module and acid number measurement module
When measured value exceedes the storage value of control module, control module control insulating oil alarm and position indicator action.
Technical scheme also includes：The storage value of liquid level gauge is 50L in the control module.
Technical scheme also includes：The Difference Storage value of pressure gauge one and pressure gauge two is in the control module
10MPa。
Technical scheme also includes：The storage value of temperature-measuring module is 130 DEG C in the control module.
Technical scheme also includes：The storage value of acid number measurement module is 0.1mgKOH/ in the control module
g。
Technical scheme also includes：The storage value of water content module is 10mg/L in the control module.
Technical scheme also includes：The measurement inlet pipe is provided with valve, and the valve is automatic valve.
Technical scheme also includes：The measurement return pipe is provided with valve, and the valve is automatic valve.
Technical scheme also includes：The filter includes cartridge filter, and filter core is provided with the cartridge filter, described
Filter core includes by-pass filtration layer, secondary filtration layer and three-stage filtration layer.
The beneficial effects of the invention are as follows：By setting on-line maintenance monitoring platform, can in transformer station transformer it is exhausted
Edge oil carries out real time on-line monitoring monitoring, can avoid due to caused by testing inspection condition and transformer actual motion condition difference
Measurement error, measurement accuracy are high；Also, real-time monitoring and maintenance is used, sets alarm and position to show on monitoring platform is safeguarded
Show device, can avoid what traditional periodic monitoring easily occurred from being difficult to the defects of giving warning in advance of being broken down to transformer, with
And can avoid due to the discrete distribution of transformer, once break down the problem of being difficult to investigation；In addition, transformer is set to connect repairing
Tank, and liquid level gauge is set on repairing tank, filter and pressure gauge are set on connecting line, can be according to pressure before and after filter
Whether the difference of meter judges impurity content in insulating oil and needs to carry out replacing maintenance to filter, it is ensured that it is safe to use can
Lean on；Meanwhile temperature, water content and acid number measurement module are set on measurement maintenance instrument, measured value is real-time transmitted to online
Monitoring platform is safeguarded, measured value after judgement, when more than preset value, is controlled alarm by control module compared with preset value
Act with position indicator, prompted to operating personnel, response quickly, performed reliably.
Brief description of the drawings
Fig. 1 is the system schematic of the present invention.
Fig. 2 is the structural representation of the present invention.
In figure：1st, transformer, 2, oil feed line, 21, liquid-sighting glass, 3, repairing tank, 31, liquid level gauge, 4, outlet line, 41,
Filter, 42, pressure gauge one, 43, pressure gauge two, 5, measurement inlet pipe, 6, measurement maintenance instrument, 61, temperature-measuring module, 62, contain
Measure of water module, 63, acid number measurement module, 7, measurement return pipe, 8, valve.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
As depicted in figs. 1 and 2, the maintaining method of a kind of electric power system of the invention, is mainly included the following steps that：
Step 1, the oil inlet of transformer 1 is connected by oil feed line 2 with the oil-out of repairing tank 3, by transformer 1
Oil-out be connected by outlet line 4 with the oil return opening of repairing tank 3；
Step 2, transformer insulation oil is filled into repairing tank 3, and the main component of transformer insulation oil includes alkane, ring
Alkane race saturated hydrocarbons and aromatic series unsaturated hydrocarbons, the shining point of institute's transformer insulation oil are not less than 135 DEG C, and transformer insulation oil coagulates
Solid point is not higher than -25 DEG C, and the acid number of transformer insulation oil is no more than 0.05mgKOH/g；
Step 3, liquid level gauge 31 is installed on repairing tank 3, filter 41, the and of pressure gauge 1 are installed in outlet line 4
Pressure gauge 2 43, pressure gauge 1 and pressure gauge 2 43 respectively be located at filter 41 both sides, using circuit by pressure gauge one, pressure
The input module of power meter two and liquid level gauge respectively with on-line maintenance monitoring platform is connected；
Step 4, transformer 1 and measurement maintenance instrument 6 are connected into loop using inlet pipe 5 and measurement return pipe 7 is measured, surveyed
Measure and temperature-measuring module 61,62 pieces of moisture measurement mould and acid number measurement module 63 are installed on maintenance instrument 6, using circuit by temperature
The input module of measurement module, moisture measurement module and acid number measurement module respectively with on-line maintenance monitoring platform is connected；
Step 5, the input module of on-line maintenance monitoring platform send the measured value of liquid level gauge 31 to on-line maintenance monitoring
The control module of platform, control module judge the measured value of liquid level gauge compared with the storage value of control module, specifically,
The storage value of the liquid level gauge is 50L.When the measured value of liquid level gauge exceedes the storage value of control module, control module control is online
Safeguard liquid level gauge alarm and the position indicator action of the output module of monitoring platform；
Step 6, input module send the measured value of pressure gauge 1 and pressure gauge 2 43 to control module, control mould
The measured value of pressure gauge one and pressure gauge two is made the difference and judged compared with the storage value of control module by block, specifically, should
The storage value of pressure difference value is 10MPa.When the difference of pressure gauge one and pressure gauge two exceedes the storage value of control module, control
The filter alarm of module control output module and position indicator action；
Step 7, input module is by the survey of temperature-measuring module 61, moisture measurement module 62 and acid number measurement module 63
Value sends control module to, and control module is by the measurement of temperature-measuring module, moisture measurement module and acid number measurement module
Value judges that specifically, the storage value of temperature-measuring module is 130 DEG C, aqueous compared with the storage value of control module respectively
The storage value of measurement module is 10mg/L, the storage value of acid number measurement module is 0.1mgKOH/g, and wherein acid number unit contains
Justice is to neutralize the acidic components contained in 1g insulating oils, and the milligram number of required potassium hydroxide turns into acid number, and its big I is anti-
Reflect the refining depth and degree of oxidation of insulating oil.When the survey of temperature-measuring module, moisture measurement module and acid number measurement module
When value exceedes the storage value of control module, control module control insulating oil alarm and position indicator action.
In the present invention, automatic valve 8 is respectively provided with measurement inlet pipe 5 and measurement return pipe 7, filter 41 includes cartridge filter, mistake
Filter core is provided with filter cylinder, filter core includes by-pass filtration layer, secondary filtration layer and three-stage filtration layer.
It is described above, only it is presently preferred embodiments of the present invention, it is done within the spirit and principles of the invention any to repair
Change, equivalent substitution and improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of maintaining method of electric power system, is mainly included the following steps that：
Step 1, by transformer（1）Oil inlet pass through oil feed line（2）With repairing tank（3）Oil-out connection, by transformer
（1）Oil-out pass through outlet line（4）With repairing tank（3）Oil return opening connection；
Step 2, to repairing tank（3）Interior filling transformer insulation oil, the main component of the transformer insulation oil include alkane,
Naphthene series's saturated hydrocarbons and aromatic series unsaturated hydrocarbons, the shining point of the transformer insulation oil are not less than 135 DEG C, and the transformer is exhausted
The freezing point of edge oil is not higher than -25 DEG C, and the acid number of the transformer insulation oil is no more than 0.05mgKOH/g；
Step 3, in repairing tank（3）Upper installation liquid level gauge（31）, in outlet line（4）Upper installation filter（41）, pressure gauge one
（42）With pressure gauge two（43）, the pressure gauge one（42）With pressure gauge two（43）It is located at filter respectively（41）Both sides, profit
With circuit by pressure gauge one（42）, pressure gauge two（43）And liquid level gauge（31）Respectively with the input module of on-line maintenance monitoring platform
Connection；
Step 4, using measuring inlet pipe（5）With measurement return pipe（7）By transformer（1）With measurement maintenance instrument（6）Connect into loop,
In measurement maintenance instrument（6）Upper installation temperature-measuring module（61）, moisture measurement module（62）With acid number measurement module（63）, profit
With circuit by temperature-measuring module（61）, moisture measurement module（62）With acid number measurement module（63）Supervised respectively with on-line maintenance
Survey the input module connection of platform；
Step 5, the input module of on-line maintenance monitoring platform is by liquid level gauge（31）Measured value to send on-line maintenance monitoring to flat
The control module of platform, control module is by liquid level gauge（31）Measured value judge compared with the storage value of control module, work as liquid
Position meter（31）Measured value exceed control module storage value when, control module control on-line maintenance monitoring platform output module
Liquid level gauge alarm and position indicator action；
Step 6, input module is by pressure gauge one（42）With pressure gauge two（43）Measured value send control module to, control mould
Block is by pressure gauge one（42）With pressure gauge two（43）Measured value make the difference and compared with the storage value of control module judge, when
Pressure gauge one（42）With pressure gauge two（43）Difference when exceeding the storage value of control module, control module control output module
Filter alarm and position indicator action；
Step 7, input module is by temperature-measuring module（61）, moisture measurement module（62）With acid number measurement module（63）'s
Measured value sends control module to, and control module is by temperature-measuring module（61）, moisture measurement module（62）Measured with acid number
Module（63）Measured value respectively compared with the storage value of control module judge, work as temperature-measuring module（61）, water content
Measurement module（62）With acid number measurement module（63）In the measured value of one exceed control module storage value when, control module
Control insulating oil alarm and position indicator action.
A kind of 2. maintaining method of electric power system as claimed in claim 1, it is characterised in that：Liquid level gauge in the control module
Storage value be 50L.
A kind of 3. maintaining method of electric power system as claimed in claim 1, it is characterised in that：Pressure gauge in the control module
One and the Difference Storage value of pressure gauge two be 10MPa.
A kind of 4. maintaining method of electric power system as claimed in claim 1, it is characterised in that：Temperature is surveyed in the control module
The storage value for measuring module is 130 DEG C.
A kind of 5. maintaining method of electric power system as claimed in claim 1, it is characterised in that：Acid number is surveyed in the control module
The storage value for measuring module is 0.1mgKOH/g.
A kind of 6. maintaining method of electric power system as claimed in claim 1, it is characterised in that：Water content in the control module
The storage value of module is 10mg/L.
A kind of 7. maintaining method of electric power system as described in claim 1 to 6 is any, it is characterised in that：The measurement inlet pipe
（5）It is provided with valve（8）, the valve（8）It is automatic valve.
A kind of 8. maintaining method of electric power system as claimed in claim 7, it is characterised in that：The measurement return pipe（7）On set
There is valve（8）, the valve（8）It is automatic valve.
A kind of 9. maintaining method of electric power system as claimed in claim 7, it is characterised in that：The filter（41）Including mistake
Filter cylinder, the cartridge filter is interior to be provided with filter core, and the filter core includes by-pass filtration layer, secondary filtration layer and three-stage filtration layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610731587.2A CN106373724B (en) | 2016-08-26 | 2016-08-26 | A kind of maintaining method of electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610731587.2A CN106373724B (en) | 2016-08-26 | 2016-08-26 | A kind of maintaining method of electric power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106373724A CN106373724A (en) | 2017-02-01 |
| CN106373724B true CN106373724B (en) | 2017-11-17 |
Family
ID=57902615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610731587.2A Active CN106373724B (en) | 2016-08-26 | 2016-08-26 | A kind of maintaining method of electric power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106373724B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113267221B (en) * | 2021-06-24 | 2022-09-27 | 江苏安利达科技有限公司 | Online real-time monitoring and early warning method for operation safety of power grid system transformer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2132755A2 (en) * | 2007-03-20 | 2009-12-16 | Eduardo Pedrosa Santos | Temperature monitoring system for power transformers submerged in oil |
| CN103149345A (en) * | 2013-02-25 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Detecting method and detecting device for intelligent dissolved gas-in-oil component |
| CN204390851U (en) * | 2015-03-11 | 2015-06-10 | 江苏伯乐达变压器有限公司 | Transformer vacuum oil system |
| CN104949715A (en) * | 2015-07-09 | 2015-09-30 | 四川盛鑫源电器设备制造有限公司 | On-line monitoring system and method for insulating oil of transformer |
| CN105097204A (en) * | 2015-08-27 | 2015-11-25 | 安徽西高电气设备有限公司 | Self-test transformer |
| CN105547572A (en) * | 2016-01-18 | 2016-05-04 | 成都佳信电气工程技术公司 | On-line pressure monitoring and automatic quantitative oil-taking/supplementing device for power oil shortage equipment |
-
2016
- 2016-08-26 CN CN201610731587.2A patent/CN106373724B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2132755A2 (en) * | 2007-03-20 | 2009-12-16 | Eduardo Pedrosa Santos | Temperature monitoring system for power transformers submerged in oil |
| CN103149345A (en) * | 2013-02-25 | 2013-06-12 | 浙江省电力公司电力科学研究院 | Detecting method and detecting device for intelligent dissolved gas-in-oil component |
| CN204390851U (en) * | 2015-03-11 | 2015-06-10 | 江苏伯乐达变压器有限公司 | Transformer vacuum oil system |
| CN104949715A (en) * | 2015-07-09 | 2015-09-30 | 四川盛鑫源电器设备制造有限公司 | On-line monitoring system and method for insulating oil of transformer |
| CN105097204A (en) * | 2015-08-27 | 2015-11-25 | 安徽西高电气设备有限公司 | Self-test transformer |
| CN105547572A (en) * | 2016-01-18 | 2016-05-04 | 成都佳信电气工程技术公司 | On-line pressure monitoring and automatic quantitative oil-taking/supplementing device for power oil shortage equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106373724A (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Babichev et al. | Automated monitoring system for drive motors of gas-compressor units | |
| CN202582602U (en) | Transformer running state comprehensive monitoring system | |
| Khramshin et al. | Monitoring technical state of the power transformers is a necessary condition of the Smart-Grid technology introduction within the industrial electric networks | |
| CN110007182A (en) | A kind of the health status method for early warning and device of distribution transformer | |
| CN107367337A (en) | A kind of method that oil-filled transformer on-line monitoring is realized using transformer top-oil temperature liter | |
| CN105678469A (en) | Risk assessment method for relay protection equipment in intelligent substation | |
| CN102005736A (en) | On-line monitoring method of state of relay protection equipment | |
| CN109358583A (en) | A method of preventing the failure of nuclear power unit key work center method | |
| CN109406145B (en) | Variable lubrication intelligent thrust bearing system | |
| Eltyshev et al. | Diagnostics of the power oil-filled transformer equipment of thermal power plants | |
| Raza et al. | Towards improving technical performance of a 747 MW thermal power plant | |
| CN106373724B (en) | A kind of maintaining method of electric power system | |
| CN106896833A (en) | Crude oil tank farm liquid level protection safety control method | |
| CN203366114U (en) | Relay protection and secondary loop state on-line maintenance system based on SOA | |
| CN106338593B (en) | A kind of transformer special maintenance apparatus and method | |
| Zhang et al. | Residual lifetime evaluation of power transformers based on data fusion and wiener model | |
| CN106248144B (en) | A kind of electric power maintenance system | |
| CN204142289U (en) | Blower fan unit on-line monitoring system | |
| CN204203439U (en) | Embedded accumulator online monitoring system | |
| CN116227964A (en) | Data asset management optimization method, system and equipment | |
| Kerin et al. | Dynamic security assessment in system operation and planning—First experiences | |
| Čepin et al. | Consideration of ageing within probabilistic safety assessment models and results | |
| CN203350429U (en) | On-line real-time error monitoring system for alternating current sampling measurement apparatus | |
| Nazarychev et al. | The Inspection of the Technical State of Critical Infrastructure Facilities | |
| CN105956930A (en) | Determination method of difference operation maintenance strategy of electric power device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |