North delhi power limited is a major power distribution company in north india. Factors that govern substation layout are described. The unit substation is a relatively recent development. The vision of the process bus is to provide a merging unit, which samples the values at the. Ehv dc switchyards from siemens sending station indoor, receiving station outdoor, and. Design guide for rural substations usda rural development. Bus bar arrangements such as single bus, double bus, double bus with double breaker, main and transfer bus schemes are explained with sketches. Substations interconnect different voltage levels and are the critical link between. Board dvb the merger took place in 2002 and since then. Smu615 is a dedicated substation merging unit intended for measuring current. Home technical articles substation main functions and classification primary distribution alstom 145kv gasinsulated switchgear gis f35 at the shuqaiq hv substation in saudi arabia an electrical substation is an assemblage of electrical components including busbars, switchgear, power transformers, auxiliaries etc.
Pdf electric power substations engineering, third edition erlet. Pdf the adoption of the substation automation sa technology for the grids and substations is been increasingly used by the. The 21st century substation design power systems engineering. Substation elements and the system earthing are considered. Moving from conventional to intelligent substations texas instruments. Centralized substation protection and control ieee psrc. Pdf substation automation system for 3366 kv ss at north delhi. Technical guide the mvlv transformer substations abb group. Mrss is defined as main receiving substation power plants very rarely. Kec is the leading manufacturer of switchgear, unitised package substation, electrical substation manufacturers in 3 type 11kv, 22kv and 33kv.
These current transformers have been designed and developed in close collaboration with rte, the french electricity network, to match the most stringent requirements of outdoor substations. Surge arresters are generally connected between phase conductor and ground. Substation automation based on iec 61850 with new process. Mrs main receiving substation transformer relay scribd. The results of the survey revealed that the utility follows a timebased. Mrs main receiving substation free download as word doc. Scribd is the worlds largest social reading and publishing site. The main issue from the substation designers point of view is to adequately specify the required.
There are four major types of electric substations. Secondary substations receive power at 6633kv which is stepped down usually to 11kv. Location of the surrounding loads in the layout of both the current and the planned. New communication technology iec61850 is the new standard for communication networks and systems in substations. The first step in planning a substation layout is the preparation of a oneline.
The paper presents the results of a survey regarding substation maintenance practices in a saudi arabian electric utility. There are two basic types of control operation, manual and automatic control. The station may consist of transformers, switches, circuit breakers and other auxilliary equipment. Substation substation a station in the power transmission system at which electric power is transformed to a conveniently used form. Mail merge by email with pdf attachment microsoft community. The merging unit can send and receive signals from other devices using the. I am well versed in mail merging, and am aware that you cannot merge with an attachment in word, but wondered if there is the ability to do this. The fence is connected to a separate grounding conductor. A unit substation is factory built and tested, then shipped in modules that are bolted together at the site. As the smart substation based on iec 61850 gradually becomes the major technical choice. Surge arresters or lightning arresters discharge the over voltage surges to earth and protect the equipment insulation from switching surges and lightning surges. Mail merge by email with pdf attachment i have a spreadsheet of over 300 contacts who i need to email a pdf attachment to. Both the primary and secondary design merge the existing technology and new.
An object model describing the information available from the different primary equipment and from the substation automation functions. In a substation surge arrester is located at the starting of the substation as seen from incoming transmission lines and is the first equipment of the substation. Its main function is to receive energy transmitted at high voltage from. Distribution substations michigan technological university. How is main receiving substation power plants abbreviated. Substation equipment an overview sciencedirect topics. Sending end, receiving end, network, services, information description. Substation merging unit smu615 product guide abb group. However, the sampling rate of merging units in a smart substation is limited to 4 khz. Mrss stands for main receiving substation power plants. Design and application of power quality monitoring.
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