Technical Information
Wind power converter low temperature working test and detection
[ 12-05-2024 ]
The method of low-temperature working test and detection of wind power converter mainly focuses on its performance and reliability in low-temperature environments. The following are some commonly used test methods:
1. Test Preparation
Determine the test temperature: Set a reasonable test temperature range according to the lowest operating temperature that the wind power converter may face. Usually, this temperature range will be lower than the historical lowest temperature in the area where the wind farm is located to ensure that the converter can still work normally under extremely low-temperature conditions.
Prepare test equipment: including low-temperature test chamber, temperature sensor, current and voltage measuring instruments, data acquisition system, etc. These equipment are used to simulate low-temperature environments, monitor the working status of the converter, and record relevant data.
Connection and setting: Place the wind power converter in the low-temperature test chamber and connect all necessary test circuits and sensors. Ensure that the data acquisition system can accurately record the various parameters of the converter during the test.
2. Low-temperature step test
Starting temperature setting: Set the temperature of the low-temperature test chamber to the starting temperature, such as -30℃.
No power on the sample: No power is supplied to the wind power converter until the temperature reaches stability.
Temperature stepping: When the temperature is stable, start to lower the temperature with a certain step value (such as -10℃), and keep it for a period of time (such as 20 minutes) for functional testing after each step value is lowered. As the temperature decreases, the step value can be gradually reduced (such as changing to -5℃ after reaching -40℃).
Functional test: At each temperature stage, the wind power converter is tested for performance indicators, including startup, operation, shutdown, communication, and other functions, and the test results are recorded.
Record data: Record the working status, fault information, and performance parameters of the converter at each stage in detail, such as output voltage, current, power factor, etc.
III. Rapid temperature change test
Starting temperature and range: Rapidly reduce the temperature of the test box from room temperature to low temperature (such as -65℃), and then quickly increase it to high temperature (such as 130℃), keep the high and low temperatures for a certain time (such as 3 minutes), and the temperature change rate is 60℃/min.
Power-on operation: During the test, keep the wind power converter powered on and apply standard working power.
Performance test: At the end of each temperature point, the wind power converter is tested for performance and the test results are recorded.
Fault detection: Observe and record any faults or abnormal phenomena that occur during the test.
IV. Other auxiliary tests
Vibration test: Under low-temperature conditions, the wind power converter is subjected to a vibration test to evaluate its reliability and stability in a vibration environment.
High-pressure cooking test: The wind power converter is placed in a high-pressure cooking environment to evaluate its performance under extreme humidity and temperature conditions.
Static electricity and fast pulse group test: The wind power converter is subjected to electrostatic discharge and fast pulse group tests to evaluate its anti-interference ability in an electromagnetic interference environment.
V. End of test and data analysis
End of test: When the predetermined test cycle is reached or a fault occurs, the test is ended.
Data analysis: Analyze the data recorded during the test to evaluate the performance and reliability of the wind power converter in a low-temperature environment.
Improvement measures: According to the test results, propose improvement measures, such as optimizing the heat dissipation design, strengthening protection measures, etc., to improve the adaptability and reliability of the wind power converter in a low-temperature environment.
In summary, the low-temperature working test and inspection of wind power converters is a complex and meticulous process, which requires comprehensive consideration of multiple factors and the adoption of corresponding test methods and measures to ensure its reliability and stability in low-temperature environments.
1. Test Preparation
Determine the test temperature: Set a reasonable test temperature range according to the lowest operating temperature that the wind power converter may face. Usually, this temperature range will be lower than the historical lowest temperature in the area where the wind farm is located to ensure that the converter can still work normally under extremely low-temperature conditions.
Prepare test equipment: including low-temperature test chamber, temperature sensor, current and voltage measuring instruments, data acquisition system, etc. These equipment are used to simulate low-temperature environments, monitor the working status of the converter, and record relevant data.
Connection and setting: Place the wind power converter in the low-temperature test chamber and connect all necessary test circuits and sensors. Ensure that the data acquisition system can accurately record the various parameters of the converter during the test.
2. Low-temperature step test
Starting temperature setting: Set the temperature of the low-temperature test chamber to the starting temperature, such as -30℃.
No power on the sample: No power is supplied to the wind power converter until the temperature reaches stability.
Temperature stepping: When the temperature is stable, start to lower the temperature with a certain step value (such as -10℃), and keep it for a period of time (such as 20 minutes) for functional testing after each step value is lowered. As the temperature decreases, the step value can be gradually reduced (such as changing to -5℃ after reaching -40℃).
Functional test: At each temperature stage, the wind power converter is tested for performance indicators, including startup, operation, shutdown, communication, and other functions, and the test results are recorded.
Record data: Record the working status, fault information, and performance parameters of the converter at each stage in detail, such as output voltage, current, power factor, etc.
III. Rapid temperature change test
Starting temperature and range: Rapidly reduce the temperature of the test box from room temperature to low temperature (such as -65℃), and then quickly increase it to high temperature (such as 130℃), keep the high and low temperatures for a certain time (such as 3 minutes), and the temperature change rate is 60℃/min.
Power-on operation: During the test, keep the wind power converter powered on and apply standard working power.
Performance test: At the end of each temperature point, the wind power converter is tested for performance and the test results are recorded.
Fault detection: Observe and record any faults or abnormal phenomena that occur during the test.
IV. Other auxiliary tests
Vibration test: Under low-temperature conditions, the wind power converter is subjected to a vibration test to evaluate its reliability and stability in a vibration environment.
High-pressure cooking test: The wind power converter is placed in a high-pressure cooking environment to evaluate its performance under extreme humidity and temperature conditions.
Static electricity and fast pulse group test: The wind power converter is subjected to electrostatic discharge and fast pulse group tests to evaluate its anti-interference ability in an electromagnetic interference environment.
V. End of test and data analysis
End of test: When the predetermined test cycle is reached or a fault occurs, the test is ended.
Data analysis: Analyze the data recorded during the test to evaluate the performance and reliability of the wind power converter in a low-temperature environment.
Improvement measures: According to the test results, propose improvement measures, such as optimizing the heat dissipation design, strengthening protection measures, etc., to improve the adaptability and reliability of the wind power converter in a low-temperature environment.
In summary, the low-temperature working test and inspection of wind power converters is a complex and meticulous process, which requires comprehensive consideration of multiple factors and the adoption of corresponding test methods and measures to ensure its reliability and stability in low-temperature environments.