A proposal on voltage dip regulation for the Dutch MV distribution networks

Abstract

Summary Voltage quality regulation has been an ongoing discussion in many countries in the world to set up a regulatory framework where also voltage dips are included in the national grid codes. Regarding voltage dips, the regulatory framework is useful for establishing the coordination between the network operators, the equipment manufacturers, and the customers. The voltage dip regulation can provide benefits for the involved parties. By defining the responsibilities for the network operators and the customers, it can help distribution system operators to evaluate the quality of supply voltage and to take possible measures when the number of dips exceed the reference values defined in the regulation. The regulatory framework can also help customers to make an economic analysis for choosing appropriate mitigation methods to reduce the expected economic damages caused by voltage dips. This article presents two approaches for classifying different types of voltage dips into various clusters. Using datasets of voltage dips from the Dutch MV networks, the paper also describes the methodology for setting limits on the number of voltage dips for the regulatory purpose.

Planning of Distributed Energy Storage Systems in μGrids Accounting for Voltage Dips

“…Unfortunately, no economic regulation of the voltage dips is still active [31]. However, some preliminary studies [32,33] offer valuable figures resulting from measurements, survey and simulations, which can guide in deriving the economic value to assign to the voltage dips.…”

“…In order to better prove the effect of the dip compensation on the total cost reduction, in Table 6, the percentage values of the benefit related to the voltage dip cost reduction are reported, with reference to the cases in which the planning procedure provides a solution. It is interesting to note that the percentage benefit due to the voltage dip cost reduction falls within the range [33][34][35] % in cases 1, 4, and 5. In case 6, the percentage value is lower (about 11%).…”

Data Description Technique-Based Islanding Classification for Single-Phase Grid-Connected Photovoltaic System

“…An illustration of root mean square (RMS) voltage below the voltage dip threshold (0.9 pu) for a particular duration is shown in Figure 4. This voltage dip threshold varies depending on the purpose and region of operation [37]. Further, these voltage dips can be used for detecting islanding scenarios and overcome the phenomenon of NDZs.…”