Tests für Anti-Islanding-Geräte von Energiespeicherkraftwerken erforderlich

Tests zum Verifizieren dieser Fähigkeit befinden sich derzeit in der Entwicklung. Für spezifische Anti-Islanding-Tests ist individuelle Hard- und Software erforderlich. Die Spannung aus dem öffentlichen Stromnetz weist in der Regel einen geringen (im Millivoltbereich liegenden) Gleichspannungsanteil auf.

Do utility-interconnected photovoltaic inverters have islanding prevention measures?

Utility-interconnected photovoltaic inverters - Test procedure of islanding prevention measures IEC 62116:2014 provides a test procedure to evaluate the performance of islanding prevention measures used with utility-interconnected PV systems.

Why do we need a testing procedure for islanding prevention?

Testing procedures for islanding prevention measures contribute to establishing safe and reliable operation of PV systems connected to utility grids and they enhance the wide spread use of environmentally friendly PV to supplement conventional power sources. Most IEA countries are drafting anti-islanding requirements for interconnection.

What are active islanding detection methods?

The active islanding detection methods generally contain an active circuit to force voltage, frequency or the measurement of impedance. The methods analyzed were: The methods not present in the inverter are generally controlled by the utility or have communications between the inverter and the utility to affect an inverter shut down when necessary.

What are passive methods for detecting an islanding condition?

Passive methods for detecting an islanding condition basically monitor selected parameters such as voltage and frequency and/or their characteristics and cause the inverter to cease converting power when there is a transition from normal grid connected conditions.

Can a GE inverter be landed without anti-islanding measures?

Test results with abnormal utility condition The test results evaluated the effectiveness of the proposed inverter-based interface from GE. Using a matched load, the inverter can be islanded (more than 2 seconds) without any anti-islanding measures activated.

Are photovoltaic inverters effective in detecting island conditions?

Several methods for identifying island condition have been proposed, both passive and active, each one characterized by its pros and cons. The standard IEC 62116 was promulgated with the aim of regulating a test procedure to evaluate the IP effectiveness of PhotoVoltaic (PV) inverters independently from the island detection method implemented.