GB/T 31365-2015Testing code for photovoltaic power station connected to power grid (English PDF)

GB/T 31365-2015 is the English-translated version of 光伏发电站接入电网检测规程.

GB/T 31365-2015 is the testing code for photovoltaic power stations connected to the power grid.

Clause 1 states that the standard specifies the test items, test conditions, test equipment and test methods for photovoltaic power plants connected to the grid, and that it applies to photovoltaic power plants connected to the grid at voltage levels of 35kV and above and to newly built, expanded and reconstructed photovoltaic power plants connected to the public grid at the 10kV voltage level.

The contents list runs 1 Scope, 2 Normative references, 3 Terms and definitions, 4 General, 5 Measurement device, 6 Power features, 7 Operation suitability, 8 Low voltage ride through capability, 9 Power quality and 10 Test file, followed by four informative annexes: Appendix A on inspection records, Annex B on the method for determining the response time and precision of power setpoint control, Annex C on the method for determining and calculating reactive current injection, and Appendix D on the method for determining active power recovery.

Clause 3 defines five terms: the photovoltaic power unit, a set of photovoltaic modules connected in series and parallel within the plant and collected through DC combiner boxes and DC distribution cabinets, then raised by inverter and step-up transformer to a supply matching the grid frequency and voltage; the active power change, the difference between the maximum and minimum active power of the plant within a given time interval; the solar global irradiance, the total solar radiation flux incident per unit area on a horizontal surface, in W per square metre; the module temperature, the actual operating temperature at the back of the solar module; and the grid simulator, a controllable AC power source whose output characteristics are analogous to those of the power system.

The draft breaks off after 3.5, so the content of clauses 4 to 10 is not shown. Clause 2 cites GB/T 12325, GB/T 12326, GB/T 14549, GB/T 15543, GB/T 15945, GB/T 17626.15, GB/T 17626.30, GB/T 19964-2012, GB 20840.2 and GB 20840.3.

The page records the standard as proposed and managed by the China Electricity Council and drafted by the China Electric Power Research Institute and the State Grid Electric Power Research Institute. It was issued on 4 February 2015 and has applied since 1 September 2015.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

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