As the latest standard that is quickly gaining popularity in power substation automation, IEC 61850 offers self-descriptive object data models, standardized configurability with Substation Configuration Language (SCL), the promise of interoperations among intelligent electronic devices (IEDs) from different manufacturers, and lower integration installation costs. The IEC 61850 standard initiall...

BACKGROUND The inclusion of level I in neck dissections for oropharyngeal carcinoma remains controversial. Our objectives were to evaluate the feasibility and relevance of substation node counts in level I of the neck dissection and to determine the specific substation location of metastases in level I in oropharyngeal carcinoma. METHODS Sixty specimens were retrospectively analyzed after an ...

Substation protection is one of the most important schemes in power system. Rainfall, Humidity, Temperature and contaminations do not produce over voltage but are capable of lowering the flashover voltage and affect the operation of the equipment. The aim of the study was to identify the climatic factors especially the average lightning days and / or ground flash density so that substation desi...

In the construction process of smart grid, an assessment on primary equipments intelligent transformation is an urgent content in the first batch of intelligent substation pilot project. Wide investigation of intelligent substation pilot projects was conducted seriously in several regional power grids in China. An mathematical model was established to assess the substation primary equipments in...

In order to assure the uninterrupted power supply of high speed railway, the reliability assessment of traction substation is essential at the design stage. Based on the system reliability engineering theory, a new system reliability analysis method called the GO-FLOW methodology is applied in the reliability assessment of traction substation of high speed railway. Considering failure and dynam...

Today many substations exist with a multitude of different communication systems and architectures. Extension and retrofitting of stations are natural opportunities to introduce the IEC61850. It can be that an extended part of a substation is equipped with the new standard and then need to be integrated into the older part that is based on presently available communications. When retrofitting a...

Monitoring of substation equipment performance and maintenance needs is typically met with test devices that are brought to a substation and data is collected manually. This paper introduces a new concept where this process is performed through an on-line data acquisition and processing solution. This is accomplished by utilizing substation automation systems for diagnostics and maintenance pur...

This paper reports on the development of integrated protection for power system. The background of the development is firstly introduced, in which a centralized protection system (or relay) provides the protection of multiple power plant or a substation. A novel integrated protection scheme for distribution system based on overcurrent protection technique is described. In the proposed scheme, s...

Based on natural ventilation design scheme for main transformer room of an indoor substation, different air distribution schemes were obtained by changing height and size of air inlets and outlets. Three-dimensional simulation of air distribution was conducted for the transformer room by using Computational Fluid Dynamics (CFD) method. Ventilation & cooling effect of different indoor ventilatio...

With the electric industry undergoing change, increased attention is being focused on power supply reliability and power quality. Power providers and users alike are concerned about reliable power, whether the focus is on interruptions and disturbances or extended outages. Monitoring can provide information about power flow and demand and help to identify the cause of power system disturbances....