What is it about?
Reactive power control of distributed generators (DG) is especially used for voltage regulation in the distribution level (e.g volt/var control). However, a central reactive power management of DG (reactive power dispatch) can also be used to control the reactive power exchange at the transmission-distribution interface, and hence can support voltage regulation in the upstream transmission level. This application becomes especially interesting in power systems with an increasing share of distributed generation and new and stricter requirements for the reactive power exchange at the transmission-distribution interfaces.
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Why is it important?
This paper introduces a grid planning approach for reactive power management at the transmission-distribution interface with the support of DG. The main research question is: can reactive power management with DG provide controllable reactive power with a very high availability and can this reduce or avoid the demand for additional reactive power compensators in a distribution grid section (e.g. mechanically switched compensators)? Therefore, the introduced planning approach provides basically two tools: 1. Availability assessment of DG reactive power support for relevant grid planning use cases. 2. Assessment tool of additional reactive power compensation demand in the distribution level based on economic or reliability criteria.
Perspectives
In the publication we shed light on grid planning aspects of reactive power management at the transmission-distribution interface with the support of DG, which are from my perspective, so far not fully addressed in the literature. In future, joint studies of the transmission and distribution level and practicable planning tools are required, to ensure a reliable, effective, and economic reactive power management in the integrated power system. The paper hopefully provides here some new interesting perspectives, tools, and ideas to address this challenge. An free access version for the first six months can be found here: http://ietdl.org/t/QiOc2
Markus Kraiczy
Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung eV
Read the Original
This page is a summary of: Reactive Power Management at the Transmission-Distribution Interface with theSupport of Distributed Generators - A Grid Planning Approach , IET Generation Transmission & Distribution, September 2018, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-gtd.2018.5673.
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