prDS IEC TR 63534:2025 ED1:2026

Integrating distributed PV into LVDC systems and use cases

Scope

IEC TR 63534:2025 reviews existing theoretical attempts and engineering applications in the area of solar PV systems coupled to LVDC systems. There are three aspects that are identified to be highly relevant to standard compilations:
power converters and possible control mechanisms that are eligible for facilitating the interlinking between PV and LVDC networks;
local PV system islanding detection algorithms and fault ride through in case of main grid faults;
stability analysis of PV interacting with LVDC systems and corresponding stabilization methods;
An inventory of existing (mostly IEC and national) standards is also presented, based on which different sorts of PV integration scenarios are elaborated. Gaps between actual standards and future needs are analyzed and guidelines for evolution are presented.