WO2014135015A1 - Réseau pour surveillance en ligne de transformateur de puissance dans un poste électrique intelligent - Google Patents

Réseau pour surveillance en ligne de transformateur de puissance dans un poste électrique intelligent Download PDF

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Publication number
WO2014135015A1
WO2014135015A1 PCT/CN2014/072515 CN2014072515W WO2014135015A1 WO 2014135015 A1 WO2014135015 A1 WO 2014135015A1 CN 2014072515 W CN2014072515 W CN 2014072515W WO 2014135015 A1 WO2014135015 A1 WO 2014135015A1
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WO
WIPO (PCT)
Prior art keywords
monitoring
transformer
monitoring unit
online monitoring
current
Prior art date
Application number
PCT/CN2014/072515
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English (en)
Chinese (zh)
Inventor
林其友
王刘芳
高纪伟
丁国成
彭志权
朱太云
张昌丽
李涛
Original Assignee
国网安徽省电力公司芜湖供电公司
国家电网公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 国网安徽省电力公司芜湖供电公司, 国家电网公司 filed Critical 国网安徽省电力公司芜湖供电公司
Priority to CA2903912A priority Critical patent/CA2903912C/fr
Publication of WO2014135015A1 publication Critical patent/WO2014135015A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/26—Oils; viscous liquids; paints; inks
    • G01N33/28—Oils, i.e. hydrocarbon liquids
    • G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
    • G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y04S10/16—Electric power substations
    • 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
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

Definitions

  • the invention relates to a power system monitoring system, in particular to a substation power transformer online monitoring network.
  • the technical parameters, software and hardware configuration and system functions of the online monitoring unit in the nationwide grid are completely and systematically constrained.
  • the transformers in each substation are monitored by the station, and the work of each transformer in the jurisdiction cannot be grasped as a whole. Status, issued by work order.
  • the technical problem to be solved by the present invention is to realize a networking system capable of intelligently monitoring the transformers in the substations in the jurisdiction.
  • the technical solution adopted by the present invention is: an intelligent substation power transformer online monitoring networking, the data communication server in the substation establishes communication with the monitoring unit in each transformer in the station, and establishes communication with the primary station,
  • the monitoring unit is composed of a dissolved gas and micro water monitoring unit in the oil, a casing monitoring unit, a winding temperature monitoring unit, a partial discharge monitoring unit, a core current monitoring unit, an infrared temperature monitoring unit, a vibration monitoring unit, and a transformer capacity monitoring unit.
  • Each of the monitoring units is provided with a sensor and/or an actuator, and a smart component, the sensor and/or the actuator being built or externally placed in a high voltage device or a component thereof, the sensor and the smart component Connected by an analog signal cable, the actuator and the smart component are connected by an analog signal cable or a fiber optic network, and the smart component is formed integrally with the power transformer through the sensor/actuator to output relevant measurement data.
  • the data communication server back up to the internal memory and input control commands to the actuator.
  • the data communication server in the substation is provided with a display unit and a device for inputting a control command.
  • the monitoring method of the online monitoring network of the intelligent substation power transformer is used, and the monitoring unit collects the collected data, processes the data, processes the standardized data communication agent, compares the threshold, and monitors the early warning;
  • the dissolved gas and micro water monitoring unit in the oil analyzes the H2, CO, C02, CH4, C2H4, C2H6, C2H2 and H20 periodically collected by the sensor using color grammar;
  • the casing monitoring unit periodically collects the bus TV voltage, the bus TV harmonic voltage, the bus V system frequency, and the core current by using a through-core current transformer;
  • the winding temperature monitoring unit periodically collects the internal winding of the transformer by using the temperature sensor, and collects the temperature of the part when the other monitoring unit sensor works;
  • the partial discharge monitoring unit uses ultrasonic partial discharge monitoring, ultra-high frequency partial discharge monitoring or high frequency partial discharge monitoring to collect the discharge state in the transformer in real time;
  • the core current monitoring unit periodically collects the current sensing current sampling method to monitor the current on the iron grounding wire;
  • the infrared temperature monitoring unit realizes the real-time online measurement of temperature through the fixed infrared monitoring device; the vibration monitoring unit installs the vibration sensor at the high-voltage side wall of the three-phase winding of the transformer to collect the vibration of the transformer casing of the three-phase winding in real time;
  • the transformer capacity monitoring unit periodically collects the transformer oil temperature and the winding temperature by using a temperature sensor to calculate the winding life of the transformer and calculate the overload operation capability of the transformer;
  • the above parameters are respectively compared with the preset safety requirement threshold. If the safety threshold value is within the range, the specific parameter value is output to the data communication server, and if not, the specific parameter value and the alarm signal are output to the data communication server.
  • the system has hierarchical classification alarms, which perform alarm functions in different colors and levels.
  • the system has different colors, levels, and hierarchical classification alarms. It provides online monitoring of intelligent alarm windows.
  • the alarm window pops up automatically and is provided in the alarm status window.
  • Related auxiliary decisions Based on the rule base/expert library containing historical data and various exception cases, intelligent decision making is made, the cause of the abnormality is prompted, and the defense and treatment opinions are given.
  • the system can manually and offlinely evaluate the transformer according to the component deduction rules and status evaluation rules, and generate a status evaluation report.
  • the system can also automatically and periodically perform power transformer status evaluation, evaluation content and evaluation.
  • the price cycle can be set by the user.
  • the system can combine the status evaluation results, transformer fault cases and related historical data to assess the risk of the transformer from safety, operation and cost. Judging the health of the transformer based on the content of the assessment, historical trend analysis, sudden changes in the state, and the extent of the violation.
  • the health level is divided into four levels, which are normal state, attention state, abnormal state, and severe state.
  • the system should have powerful and rich graphic display functions. Users can display various results such as panning, partial enlargement, reduction and custom display effects according to their own needs. It can display dissolved gas and micro water in power transformer oil. Monitoring data values of casing, winding temperature, partial discharge, core current, infrared temperature measurement, vibration, transformer capacity increase, etc., and can provide trend graph, bar graph, single data display, multi-data simultaneous display, etc. Display mode; The power and non-electricity monitoring information of the same transformer or different transformers can be displayed in the same graph or table.
  • the online monitoring system not only satisfies the communication function with the local power transformer monitoring equipment, but also meets the communication with the remote network state (prefecture) and the large monitoring center condition monitoring system.
  • the communication protocol satisfies the IEC61850 communication standard, and information transmission can be carried out by means of a dedicated line or a network.
  • the system has scalability and secondary development functions.
  • the types of monitoring devices that can be accessed, monitoring screens, and analysis reports are not limited.
  • the functions of the system can be expanded.
  • the application software adopts SOA architecture and supports state detection data analysis algorithms. Adding, deleting, and modifying operations can adapt to the continuous development of online monitoring and operation management.
  • Figure 1 is a network diagram of the online monitoring network of power substation power transformers
  • Figure 2 is a structural diagram of the online monitoring and reconstruction of power substation power transformers;
  • Figure 3 is a flow chart of the intelligent advanced application.
  • the intelligent substation power transformer online monitoring network is divided into three layers, the top layer is the main station 1, which is mainly used for overall monitoring, generally located in the total monitoring room within the jurisdiction, and the second layer is the data communication server 2, It is located in each substation to collect the monitoring data of the transformer 3 in the substation, and the data is transmitted to the main station 1 via the network.
  • the third layer is each transformer 3 in the substation, and several monitoring units are arranged inside each transformer 3. Each monitoring unit delivers the data it is responsible for collecting to the data communication server 2 in the station, which communicates with the data communication server 2 using the IEC 61850 communication standard.
  • the integrated monitoring unit 12 can be configured in the transformer 3, and the data collected by the monitoring unit is uniformly converted into the IEC61850 communication standard, and transmitted. To the data communication server 2.
  • the monitoring unit of each transformer 3 can be selected to have one or more of the following units, including dissolved gas and micro water monitoring unit 4 in oil, casing monitoring unit 5, winding temperature monitoring unit 6, partial discharge monitoring unit 7, core
  • the sensor/actuator is built-in or externally placed in a high-voltage device or its components.
  • the sensor and the smart component are usually connected by an analog signal cable, and the actuator and the smart component are connected by an analog signal cable or a fiber optic network.
  • the intelligent component is integrated with the power transformer through the sensor/actuator to realize all or part of the functions of measurement, control, measurement, monitoring and protection.
  • the intelligent component realizes automatic acquisition of transformer state parameters, signal conditioning, and preprocessing functions of analog-to-digital conversion box data, realizing local digitization and buffering of monitoring parameters. At the same time, the collected data is backed up in the internal memory, and at least one week of data can be stored.
  • Solubility in oil including sensing, monitoring H2, CO, gas, and micro-processors and monitors dissolved in transformer oil
  • the content of the body composition and the H20 content in the oil is the content of the body composition and the H20 content in the oil.
  • Winding light includes sensing temperature monitoring and monitoring of the windings using fiber optic temperature sensors
  • Ultrasonic including ultrasound The detection and localization of partial discharges in the sensor and monitoring transformers by detecting ultrasonic waves generated by partial discharges
  • Core connection includes sensing ground current online monitoring core and clamp ground current and monitoring sub-monitoring unit IED
  • the transformer monitors the vibration of the transformer casing, thereby monitoring whether there are loose parts and monitoring sub-units of the windings, clamps, etc. inside the sensor vibration online monitoring.
  • Transformer monitors transformer oil temperature and three-phase load, including sensing ⁇ capacity expansion online monitoring temperature over-limit alarm function, accounting transformer overload and monitoring sub-test unit operating capacity IED compartment
  • Monitoring device data collection the main frequency of the station data: > Temporary storage and initial diagnosis, unified communication protocol within the station, 2.93GHz.
  • the communication system provides a unified IEC61850-based communication memory: > Server interface, communication between the station data and the remote data platform 2G
  • the longitudinal force station is isolated from the remote data center to meet the power up and down. Substation
  • Confidential authentication device WAN communication between level control systems provides authentication Secondary security protection and encryption services Requirements
  • the Fibre Channel is high, fast, and has a long transmission distance.
  • Support SCSI
  • the monitoring method of on-line monitoring networking of intelligent substation power transformers is mainly to use various monitoring units for data monitoring to detect abnormalities in time:
  • the monitoring unit is monitored by the dissolved gas in the oil and the micro water monitoring unit.
  • the state quantity includes H2, CO, C ⁇ 2, CH4, C2H4, C2H6, C2H2 and H20.
  • the detection principle requires color grammar. It should be able to diagnose faults according to gas composition and content, ratio and growth rate; when the dissolved gas and micro water monitoring unit 4 in the oil is sampled, the same oil sample will be sampled twice under the same test conditions, if the results are between the monitoring results. If the deviation is ⁇ 10%, the data is valid, otherwise it is invalid and an alarm signal is issued to ensure the stability and accurate renaturation of the measured data.
  • the sampling period is not more than 2h, and the oil inlet pressure is >0.34MPa;
  • the current sampling of the casing monitoring unit 5 adopts a core-type current transformer, which can monitor the leakage current, capacitance and dielectric loss of the casing.
  • the installation of the sensor does not affect the safe operation of the casing, and periodically collects the bus voltage and busbar of the bus.
  • the winding temperature monitoring unit 6 periodically collects the internal winding of the transformer by using the temperature sensor, and collects the temperature of the part when the other monitoring unit sensor works;
  • the partial discharge monitoring unit 7 can be classified into three types: ultrasonic partial discharge monitoring, ultra-high frequency partial discharge monitoring, and high-frequency partial discharge monitoring according to different monitoring principles.
  • Ultrasonic partial discharge monitoring is to monitor the ultrasonic signal generated by partial discharge inside the transformer through an ultrasonic sensor installed on the surface of the transformer. No., to monitor the partial discharge inside the transformer, it is required to be able to measure the amplitude, phase and other information of the partial discharge ultrasonic signal. And can locate the local discharge power;
  • UHF partial discharge monitoring is through the UHF sensor installed on the transformer drain valve or specially designed hand hole, receiving the ultra-high frequency signal generated by partial discharge, thereby monitoring the internal of the transformer Partial discharge.
  • the high-frequency partial discharge monitoring is to collect the pulse current signal generated by the partial discharge through a broadband through-current sensor installed on the end of the casing or the transformer core clamp.
  • the UHF signal generated by the partial discharge is received to monitor the partial discharge inside the transformer. It is required to be able to measure the amplitude, phase and other information of the partial discharge ultrasonic signal. It also requires a corresponding data algorithm to eliminate interference from various noise signals in the operating environment of the device. Thereby realizing the real-time collection of the discharge condition in the transformer;
  • the core current monitoring unit 8 uses the current-carrying current transformer sampling method to monitor the current on the iron core grounding line.
  • the sensor is installed on the iron grounding copper row, and periodically collects the current on the iron core grounding line, and the minimum monitoring period is not more than lmin;
  • the infrared temperature monitoring unit 9 realizes real-time online measurement of temperature through a fixed infrared monitoring device, and has functions such as monitoring area setting and timing automatic inspection to realize real-time online measurement of temperature; the vibration monitoring unit 10 passes through the three-phase winding of the transformer.
  • a vibration sensor is installed at the position of the high-pressure side wall, and the vibration of the transformer casing of the three-phase winding is measured, and the vibration spectrum analysis of the transformer can be performed, and the data storage and historical data comparison analysis functions are available.
  • Vibration monitoring often uses piezoelectric acceleration sensor or speed sensor, installed outside the transformer iron shell, real-time acquisition of three-phase winding transformer shell vibration; transformer capacity monitoring unit 11 uses temperature sensor to periodically collect transformer oil temperature and winding temperature, To monitor transformer oil temperature and winding temperature, with temperature over-limit alarm function, at the same time estimate transformer winding losses, calculate transformer winding life, calculate transformer overload operation capability and other related functions.
  • the parameters collected by each of the above monitoring units are respectively compared with the preset safety requirement threshold (according to the power system safety standard). If the safety threshold value is within the range, the specific parameter value is output to the data communication server 2, and if not, the output is output. Specific parameter values and alarm signals are sent to the data communication server 2.
  • each monitoring unit is preferred to compare the collected data with a preset safety requirement threshold to detect the presence or absence of data. If it is not, then wait for the next adoption and comparison, if any, according to the rules
  • the database performs data analysis, issues a violation alarm, and issues a corresponding alarm level, and prompts the cause of the abnormality, and derives the specification and processing opinions from the database. At this time, the staff waits for the processing, and if the staff performs the defect, the alarm is generated. Eliminate, if not, continue to alarm.
  • the network of the invention supports manual summoning and timed automatic polling to collect monitoring data, continuously or periodically monitors and records the parameters of the monitored device state, and timely and effectively tracks the state change of the device, and the signal collecting mode of the monitoring device must not be affected.
  • the wiring and grounding of the transformer does not affect safe operation.
  • the data collection cycle of the monitoring device can be set by the site and remotely.
  • the sampling period of the online monitoring system can also be set by the user.
  • the network has a unified database, which saves time series and implements centralized management of online data.
  • Raw materials such as equipment parameters, test reports, instructions, drawings, etc. of the storage transformer, as well as historical monitoring data (data list and primary map), alarm information, etc.
  • Historical monitoring data and original gallery can be saved for 10 years.
  • the networking also has a human-machine interface, which is easy to operate and easy to use. You can query the latest and historical monitoring data, tables, trend curves, alarm status status evaluation results and risk assessment results, equipment parameters, historical data and other information.
  • Provides monitoring data and analysis result publishing platform including data publishing tools such as graphics, curves, reports, etc., such as the data communication server in the substation 2 can also set the display unit, and the device that inputs the control command.
  • the network of the present invention can realize the maintenance, upgrade, fault diagnosis and elimination of the system by remote login under the condition of secondary power protection of the power; and has the information sharing function, and different users can obtain corresponding information resources according to their rights.
  • a storage medium such as a ROM/RAM, a magnetic disk, an optical disk, etc.
  • a computer device which may be a personal computer, a server, or a network communication device such as a media gateway, etc.
  • each embodiment focuses on the differences from the other embodiments.
  • the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.
  • the apparatus and system embodiments described above are merely illustrative, and may or may not be physical units as separate components, ie may be located in one place, or may be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without any creative effort.

Abstract

La présente invention concerne un réseau pour la surveillance en ligne d'un transformateur de puissance dans un poste électrique intelligent, le réseau prenant complètement en considération tous les articles actuels de surveillance en ligne pour un transformateur de puissance, y compris la surveillance en ligne de gaz et de micro-eau dissous dans de l'huile, la surveillance en ligne de tuyaux manchons, la surveillance en ligne de mesure de température de fibre optique en enroulement, la surveillance en ligne de décharge locale, la surveillance en ligne de courant de mise à la terre de noyau de fer, la surveillance en ligne de mesure de température infrarouge, la surveillance en ligne de vibration, la surveillance en ligne de capacité de charge de transformateur, etc. ; et étudiant et spécifiant complètement la configuration de base, les paramètres techniques, etc. de chaque article de surveillance. Pour le réseau pour surveillance en ligne d'un transformateur de puissance à un poste électrique intelligent, les technologies de surveillance en ligne d'un transformateur de puissance dans un poste électrique intelligent sont étudiées en détail, l'étude couvrant les principes de surveillance actuels et les indicateurs de technologie de surveillance de toutes les unités de surveillance en ligne de transformateur disponibles de façon domestique, et des unités de surveillance de capacité de charge de transformateur sont proposées et appliquées pour la première fois, et les fonctions de logiciel de système de surveillance en ligne sont étudiées en détail, établissant ainsi un jeu complet de normes techniques normatives d'un système de transformateur de puissance surveillance en ligne pour postes électriques intelligents dans la province entière.
PCT/CN2014/072515 2013-03-07 2014-02-25 Réseau pour surveillance en ligne de transformateur de puissance dans un poste électrique intelligent WO2014135015A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2903912A CA2903912C (fr) 2013-03-07 2014-02-25 Reseau pour surveillance en ligne de transformateur de puissance dans un poste electrique intelligent

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310073809.2 2013-03-07
CN201310073809.2A CN103199621B (zh) 2013-03-07 2013-03-07 智能变电站电力变压器在线监测组网

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WO2014135015A1 true WO2014135015A1 (fr) 2014-09-12

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CN (1) CN103199621B (fr)
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CN105137308A (zh) * 2015-09-22 2015-12-09 国网山东东营市东营区供电公司 电力设备绝缘综合在线监测系统
CN105651403A (zh) * 2016-01-15 2016-06-08 江苏省电力公司电力科学研究院 变压器绕组光纤温控仪接线盒
CN106353579A (zh) * 2016-08-30 2017-01-25 浙江图维科技股份有限公司 一种电缆电流、导体温度、内置局放一体化监测装置及方法
CN106908703A (zh) * 2017-04-14 2017-06-30 国网江苏省电力公司无锡供电公司 变电站运维实时检测装置
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Families Citing this family (49)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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CN104867667B (zh) * 2015-06-03 2017-11-21 宁波仁栋电气有限公司 一种智能型油浸式变压器、监测系统及其监测方法
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WO2017139873A1 (fr) 2016-02-15 2017-08-24 Hyperion Sensors Inc. Procédés et systèmes de détection optique pour des applications électriques, et leur construction
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CN113945838A (zh) * 2021-10-21 2022-01-18 国电青山热电有限公司 一种在线变压器及升压站智能监测方法及系统
CN114264981A (zh) * 2021-11-12 2022-04-01 上海电力大学 基于云边融合的区域电网电力变压器健康状态评估系统
CN115529322B (zh) * 2022-06-29 2023-09-19 南方电网数字电网科技(广东)有限公司 一种基于智能装备的配网生产综合管理系统
CN117110587B (zh) * 2023-10-25 2024-01-23 国网四川省电力公司超高压分公司 一种油中溶解气体在线监测异常告警方法及系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201975858U (zh) * 2011-01-26 2011-09-14 国网电力科学研究院武汉南瑞有限责任公司 一体化智能变压器
CN102361349A (zh) * 2011-10-13 2012-02-22 广东电网公司电力科学研究院 变压器在线监测方法
CN102436226A (zh) * 2011-09-14 2012-05-02 文存润 在线监测及状态检修管理系统
CN102545382A (zh) * 2011-11-28 2012-07-04 河南省电力公司焦作供电公司 一种智能变电站变电设备在线监测系统
CN202533529U (zh) * 2012-03-31 2012-11-14 上海市电力公司 高压设备在线监测系统
CN202582602U (zh) * 2012-04-26 2012-12-05 江苏骏龙电力科技股份有限公司 变压器运行状态综合监测系统
CN102879696A (zh) * 2012-10-24 2013-01-16 上海市电力公司 一种变压器过负荷运行可行性自动判断方法
CN103199621A (zh) * 2013-03-07 2013-07-10 安徽省电力公司芜湖供电公司 智能变电站电力变压器在线监测组网
CN203218981U (zh) * 2013-03-07 2013-09-25 安徽省电力公司芜湖供电公司 一种智能变电站电力变压器在线监测组网

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0502320A (pt) * 2005-06-21 2007-02-06 Siemens Ltda sistema e método de monitoração e controle centralizado da condição de operação de transformadores de potência compreendidos em diferentes subestações e centro de monitoração
CN101789630B (zh) * 2010-02-11 2012-07-11 江苏方天电力技术有限公司 变电站在线监测及辅助设备监控系统统一平台
CN102957208B (zh) * 2012-09-19 2014-07-30 北开电气集团有限公司 配电变压器智能监控装置及其控制方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201975858U (zh) * 2011-01-26 2011-09-14 国网电力科学研究院武汉南瑞有限责任公司 一体化智能变压器
CN102436226A (zh) * 2011-09-14 2012-05-02 文存润 在线监测及状态检修管理系统
CN102361349A (zh) * 2011-10-13 2012-02-22 广东电网公司电力科学研究院 变压器在线监测方法
CN102545382A (zh) * 2011-11-28 2012-07-04 河南省电力公司焦作供电公司 一种智能变电站变电设备在线监测系统
CN202533529U (zh) * 2012-03-31 2012-11-14 上海市电力公司 高压设备在线监测系统
CN202582602U (zh) * 2012-04-26 2012-12-05 江苏骏龙电力科技股份有限公司 变压器运行状态综合监测系统
CN102879696A (zh) * 2012-10-24 2013-01-16 上海市电力公司 一种变压器过负荷运行可行性自动判断方法
CN103199621A (zh) * 2013-03-07 2013-07-10 安徽省电力公司芜湖供电公司 智能变电站电力变压器在线监测组网
CN203218981U (zh) * 2013-03-07 2013-09-25 安徽省电力公司芜湖供电公司 一种智能变电站电力变压器在线监测组网

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105137308A (zh) * 2015-09-22 2015-12-09 国网山东东营市东营区供电公司 电力设备绝缘综合在线监测系统
CN105651403A (zh) * 2016-01-15 2016-06-08 江苏省电力公司电力科学研究院 变压器绕组光纤温控仪接线盒
CN106353579A (zh) * 2016-08-30 2017-01-25 浙江图维科技股份有限公司 一种电缆电流、导体温度、内置局放一体化监测装置及方法
CN106908703A (zh) * 2017-04-14 2017-06-30 国网江苏省电力公司无锡供电公司 变电站运维实时检测装置
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CN109638968A (zh) * 2019-01-03 2019-04-16 国网新疆电力有限公司 一种变电站分布式变压器及互感器状态监测方法
FR3097647A1 (fr) 2019-06-24 2020-12-25 Idef Systemes dispositif et procéde de protection et/OU de monitorage pour transformateur electrique du type à diélectrique liquide enfermé dans une cuve hermétique
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