Intelligent Control
—— Analysis and Control Practices of Smart Transmission Grid
During the llth five-year plan, the construction of Beijing-Tianjin-Tanggu double-ring network and Beijing-Tianjin-Hebei major ring network has been fully completed by North China Power Grid with UHV power grids as the leading ones and seven longitudinal and three latitudinal 500 kV transmission channels as the backbone, forming a power transmission structure featured with multiple channels, multiple transmission directions and multiple drop points. This has greatly improved the transmission capacity of power grids, the optimal allocation capability of resources and the ability of accidents surving. The North China Power Grid has made great contribution to the economic development and social progress of the capital of Beijing and the whole North China region. Also, it has successfully guaranteed the power supply for some major events, such as the Olympic Games of Beijing, the 60th anniversary of National Day and Shanghai World Expo.
The large UHV power network structure characterized by large capacity, long distance, west-to-east power transmission and north-to-south power transmission has placed more new stringent requirements on the capability of operation, maintenance and control of power transmission and transformation equipments. Moreover, the west-to-east power transmission channels exhibit noticeable micro-topography and micro-meteorology characteristics and the extreme climate such as coating of ice and snow on lines, strong thunderstorm and squall line wind occur more frequently, posing more risks on the safe operation of the equipments.
In response to the technical requirements of construction of strong smart gridset forth by the State GridCorporation and guided by the established management idea, the North China Power Grid centers on the strategic target of building green power networks and forging first-class modern corporation and pays great importance to management innovation and technical innovation for the purpose of further improving the lean management of production.
The ST5000 system is based on the EAM system and supported by GIS and condition monitoring system, allowing for the panoramic information interaction, analysis on the assets performance, field central control, application of elaborate technical architecture, standard interface specification, modular functional configuration and integrated open platform. It can provide effective services for the company, dispatching department, production department, science & research institutes and basic units, achieving the goal that the equipment state can be observed, the production process can be monitored and the operational risks can be alarmed in advanced.
Panoramic information interaction, boosting the elaborate production management level
The system is based on the presentation platform of three-dimensional virtual earth and integrates the technologies including satellite-based remote sensing image, high-resolution aerial image, digital map and terrestrial digital elevation model and is supported by the three-dimensional laser imaging information. It can present the geographic environmental information in a visualized, three-dimensional and all-round way, allowing reproduction of the regional distribution and operating environment of North China Power Grid on the virtual platform globally and veritably. The system can establish accurate and complete three-dimensional models of power transmission and transformation equipments, create modular component library and is deeply integrated with the equipment design information, accounting information, condition monitoring information, operating information, repair and test information, allowing for micro panoramic view of the equipments.
The system utilizes the sensor technology, intelligent hybrid networking information transmission technology to enable visualized monitoring of equipment state information. In total, there are 260 online transmission monitoring devices classified into seven types and 53 online transformation monitoring devices classified into four types. The constrcution of the system allows establishment of a distributed wide-area power transmission and transformation equipment state monitoring data transfer structure system, focusing on creating a state monitoring sensing network. At earlier stage, we have established a meteorological environment monitoring network that integrates the meteorological monitoring points and the regional meteorological forecast information, a pollution monitoring network allowing full environmental measurement and dynamic monitoring of key areas as well as a visual comprehensive environment network covering the equipment proper, auxiliary facilities and accesses.
The system utilizes the ubiquitous network technology, multi-source information fusion technology to create a hybrid information network
Assets performance analysis Strengthen the precise cost management
The system presents the general conditions of power transmission and transformation equipments in visual two-dimensional diagrams, covering the multiple-dimensional professional analysis on equipment types, operating voltage, operating years, manufacturer, equipment types, operation and maintenance entities.
The system comprehensively utilizes the dynamic monitoring data, periodic test data and static equipment accounting, thereby a long-term technical monitoring and analysis mechanism has been set, includingdaily prompting of operational risk, weekly analysis on equipment defects, monthly report on technical monitoring, annually evaluation of assets state. Through putting more efforts on analysis of assets performance, we can know the overall healthy level and operational risks of equipments more accurately and thoroughly.
The holographic remote diagnosis function of the system can fully utilize the video technology and virtual reality technology to expand the diagnosis dimensions of equipment defects and perfect the equipment state assessment method through the connection of online monitoring system and unfavorable working conditions, thereby achieving the holographic remote diagnosis of power transmission and transformation equipments. This can make the repair decisions more targeted enabling the assessment of real-time state during the whole life cycle of the equipments.
Field central control Drive the reshaping of accurate business process
By developing geographic information function of patrol inspection terminal, the system can perform the functions of personnel location, path navigation, dynamic defect entry and viewing of site conditions.
The system features the functions including the automatic location of range of faults, intelligent aided analysis on fault causes, rapid allocation of personnel, vehicles and materials. Through connecting the traveling wave ranging data, the system can rapidly locate the fault zone following a fault. By starting the auxiliary analysis module of fault causes, summarizing the information of fault zones as well as the inspection results of operators and maintenance personnel along the lines, it can locate the fault positions and the fault reasons. Under the emergency repair mode, the operation and maintenance teams, emergency repair screws, distribution of spare parts storage zones and vehicle states are clearly presented, achieving the central control of personnel, materials and vehicles.
Drive development with science and technology, guide future with innovation!
The development and application of smart transmission grid analysis-control system have comprehensively promoted the lean management of production, strengthened the fine management of cost, organized and established accurate site operation process, contributing to a series of definite working standards. The system functions to provide diversified information to the executives, panoramic display to the dispatchers, decision assistance to the production management department, technical support to the science and research department, and equipment control to the basic entities, which enables the development of production management from digitalization and visualization to intelligence.
With the further improvement and deployment, ST-5000 smart transmission grid analysis-control system is sure to play a more important role in accommodating access of new energy, improving power transmission capacity and enhancing secure operation of grids, so as to drive NCGC to a new era.
添加配音客服微信好友, 低价制作高端真人配音
复制微信号
