Metrological framework for power quality surveys in DC
The EMC framework requires power system operators to maintain an agreed level of disturbance on their network known as the compatibility level (CL). Certain levels of disturbance below the CL can be generally expected and international standards aimed at manufacturers of equipment that is connected into the low voltage (LV), use the CL to set so called ‘immunity levels’ for connected equipment to guarantee EMC, i.e., reliable performance unaffected by interference. Power system operators use planning levels (PL) to design networks and plan for new connections that will increase the level of disturbance. The PL is always lower than the CL, so power system operators maintain a conservative ‘head-room’ between the two levels.
CLs and PLs are well established concepts for AC grids, but the whole EMC framework for LVDC grids is yet to be formulated and agreed. To aid this process new DC power quality (PQ) equipment, methodologies and procedures, that can be used by power system operators to determine the CL on their network, is needed. Such equipment will be used on-site to conduct PL surveys of DC PQ parameters over a long period of time.
For more information, see the project webpage >>
Short Name:DC grids,Project Number:20NRM03
Electricite de France (France)
Fundacion Circe Centro de investigacion de recursos y consumos energeticos (Spain)
Technische Universiteit Eindhoven (Netherlands)
Università degli studi della Campania Luigi Vanvitelli (Italy)
University of Strathclyde (United Kingdom)