Test Specification 16.03
Test Specification Definition
ID | 16.03 |
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Reference to Test Case | TC16 |
Title of Test | BS generator energy availability test |
Test Rationale | The BS generator must provide a sufficient amount of energy for at least 1 hour, in order for the system to cope with any uncertainties during the process. Such uncertainties may include failures in starting up other generators or instability problems. Also, uncertainties caused State of Health (SOH), ambient temperature, etc. may result in a deviation of the actual available energy of the BESS from its nominal value. The specific test addresses the ability of the BS generator to provide energy supply for at least 1 hour of continuous operation after the BS. |
Specific Test System (graphical) | The test system consists of a controllable and bidirectional MV source, one BESS comprising battery, inverter and BMS and one controller which can control the BESS’s active and reactive power injection. |
Target measures |
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Input and output parameters | Input parameters
Output parameters
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Test Design | The test can consider various profiles for the setpoints of P and Q depending on the specifications and needs from each BS system. However, as the worst-case scenario, the maximum P should continuously be drawn from the BESS in order to examine the minimum time duration of the generator’s availability. |
Initial system state |
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Evolution of system state and test signals |
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Other parameters | N/A |
Temporal resolution | A sampling time of 1 s is sufficient for monitoring the required quantities |
Source of uncertainty | Sources of uncertainty for this experiment may be the SoH of the battery, the ambient temperature as well as the accuracy with which the BMS calculates the SOC. In addition, accuracies of measurement equipment may apply. |
Suspension criteria / Stopping criteria | The test should be suspended if no maximum power absorption is obtained from the BESS. Also, if for some reason the BMS overrides the external control in order to prioritize other functions (e.g., recharge of the battery). |