IEEE Std 1526:2020 pdf download.IEEE Recommended Practice for Testing the Performance of Stand-Alone Photovoltaic Systems.
Stand-alone photovoltaic (PV) systems provide energy to a load as well as to a battery storage system’ that powers the load at night or other times when the PV array output is insufficient. This recommended practice provides test methods and procedures for assessing the performance of stand-alone PV systems that include PV modules, charge controller, batteries, and loads. This recommended practice provides testing on a system level that can be performed at a test laboratory or by qualified personnel in the field with the appropriate test equipment. These tests are intended to evaluate the adequacy of the system design (including under worst-case conditions) and performance claims. They require about one month to complete.
These tests do not address component or system reliability, quality issues, safety, or compliance to any Codes (e.g., the National Electrical Safety Code® (NEC®) [B6J2). These tests do not cover PV systems connected to an electric utility. Test results are only relevant to the system tested. If the PV system or load changes in any way, then the tests should be rerun on the modified system. It may be desired to run performance tests on the load(s). Such tests may be found in other documents, for example, Servant and Aigullon [B7] describe how to test a lamp in a photovoltaic system. Such tests, however, are beyond the scope of this recommended practice and may require specialized test equipment and procedures.
1.2 Purpose
An evaluation of stand-alone PV system performance is needed to determine how well the PV array charges the battery and how well the battery is sized for the load. Procedures provided in this recommended practice are intended to assist designers, manufacturers, system integrators, users, and laboratories in conducting performance tests of these systems.
1.3 Word Usage
The word shall indicates mandatory requirements strictly to be followed in order to conform to the standard and from which no deviation is permitted (shall equals is required to).
The word should indicates that among several possibilities one is recommended as particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but not necessarily required.
The word nmv is used to indicate a course of action permissible within the limits of the standard (niav equals is permitted to).
The word can is used for statements of possibility and capability, whether material, physical. or causal (ca,i equals is able to).
2. Definitions, acronyms, and abbreviations
2.1 Definitions
For the purposes of this document, the following terms and definitions apply. The IEEE Standards Dictionary Online should he consulted for terms not defined in this c1ause.IEEE Std 1526 pdf download.