Active distribution network concept for distributed management of low voltage network

Abstract

The paper proposes a concept and architecture for distributed low voltage network management. Active distribution network concept is capable of real-time monitoring of whole grid and it may utilize the flexibility of distributed energy resources to enhance the hosting capacity of low voltage networks. The proposed architecture creates a bridge between fully centralized automation systems like SCADA and distributed system consisting of secondary substation automation and smart metering. In this way the proposed system extends the existing automation system to low voltage networks. It may also provide required real-time visibility and operational management to low voltage network without overloading the centralized automation system. The system has been designed for multiple low voltage network use cases like network monitoring, congestion management and fault management.

Real-Time Low Voltage Network Monitoring—ICT Architecture and Field Test Experience

“…In the meanwhile, it adds more intelligence to secondary substation, allows it to filter and analyze data first before communicating to control center. This strategy is known as "decentralized" distribution management architecture [3]. It can optimize data flow, avoid overloading control center, and it is in line with proposals from other researchers [4].…”

“…2) Due to the protocol and data model disparities among systems, integrating or exchanging data among different devices typically goes hand-in-hand with interoperability issue, which can only be solved by using open standards. Bearing these concerns in mind, the seventh framework program European Project INTEGRIS [3] proposes an integrated real-time LV network monitoring solution, and implements it in a cost-efficient way. This solution integrates smart metering data with secondary substation measurements to get more accurate and real-time view about LV grid.…”

Standard-based secondary substation automation unit — the ICT perspective

“…The detail of this software is explained in [9]. "Fault management" software uses smart metering data to detect some LV network faults, such as missing phase and neutral conductor faults [2].…”

“…Its main idea is to merge smart meter data together with distribution automation, and adopt standard-based interfaces. A proof-of-concept prototype system has been implemented and tested during the European 7th Framework Program project INTEGRIS [2]. It realizes LV network monitoring in near real-time.…”

Power quality monitoring use case in real low voltage network

“…This paper focuses on the applications used in the INTEGRIS. A more thorough description of the communication architecture is descripted in [4].…”