This guide contains a field test procedure for lead-acid batteries used in PV hybrid power systems. Battery charging parameters are discussed with respect to PV hybrid power systems. The field test procedure is intended to verify the battery's operating setpoints and battery performance. Discussion on how to interpret test results is also included. This guide is applicable to all stand-alone PV hybrid power systems where PV and an engine generator are the only charging sources. This guide does not include stand-alone PV-only systems.

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This recommended practice focuses on the performance test of the electrical energy storage (EES) system in the application scenario of PV-storage-charging stations with voltage levels of 10 kV and below. The test methods and procedures of key performance indexes, such as the stored energy capacity, the roundtrip efficiency (RTE), the response time (RT ), the ramp rate (RR), and the reference signal tracking are defined based on the duty cycle derived from the operational characteristics of the EES system.

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This guide contains a tutorial on lead-acid battery technology, battery charging characteristics, and a laboratory test procedure to evaluate charge parameters and battery performance. The information on leadacid battery designs and environmental characteristics is provided to help the PV system designer make appropriate battery decisions. Photovoltaic system parameters and operating conditions are discussed. Charging parameters related to PV systems are also suggested to help in the selection… read more of appropriate test set points. Finally, a performance test to verify the battery's operating set points and performance is provided, including discussions on how to interpret test results. This guide is applicable to all stand-alone PV systems where PV is the only charging source. This guide does not include PV hybrid systems. read less

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