Relevant standards:
EN 50160 (1999): "Voltage characteristics of electricity supplied by public distribution systems"; amendments prAA, prAB and prAC
IEEE Std 1547 (2003): “Standard for Interconnecting Distributed Resources with Electric Power Systems”
IEEE Std 1547.1 (2005): "IEEE Standard Conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power Systems"
IEEE Std 519 (1992): “IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems”
IEC 61000-3-6 (1996): “Electromagnetic compatibility (EMC) – Part 3: Limits – Section 6: Assessment of emission limits for distorting loads in MV and HV power systems”
IEC 61000-4-11 (2004): "Electromagnetic compatibility (EMC) – Part 4: Testing and measurement techniques - Section 11: Voltage dips, short interruptions and voltage variations immunity tests"
IEC 61800-3 (2004): "Adjustable speed electrical power drive systems – Part 3: EMC requirements and specific test methods"