In order to ensure the accuracy and reliability of the capacitance value of the compensation capacitance of ZPW-2000 A track circuit measured by on-line measuring instrument of railway track signal,according to the JJG(Railway)702-2021 Verification regulations of on-line measuring instrument of railway track signal,the XHBQ-I comprehensive verification instrument for testing equipment of railway track signal is used to verify on-line measur-ing instrument of railway track signal.The paper introduces verifying scheme,and the uncertainty of the capacitance verification results of the compensation capacitance is evaluated and verified.The results show that the verifying scheme meets the requirements of value transmission and can ensure the accuracy and reliability of the capacitance values measured by on-line measuring instrument of railway track signal.
Frequency Shift Track CircuitOn-line Measuring Instrument of Railway Track SignalCompensation CapacitanceVerificationEvaluation of Measurement Uncertainty
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