A partial discharge locating apparatus capable of locating a partial discharge that has occurred in a power cable or a gas-insulated apparatus to which the power cable is connected, the partial discharge locating apparatus comprising: a first sensor mounted to the gas-insulated apparatus and capable of detecting a partial discharge signal; a second sensor mounted to the power cable and capable of detecting the partial discharge signal; a frequency selecting unit connected to the first sensor, and connected to the second sensor, wherein the frequency selecting unit is configured to select a first component of a first predetermined detection frequency from the partial discharge signal output from the first sensor and to output the selected first component, and to select a second component of a second predetermined detection frequency from the partial discharge signal output from the second sensor and to output the selected second component, wherein each respective predetermined detection frequency is the frequency used for the detection of the partial discharge signal output from the corresponding sensor; and a time difference detecting unit configured to detect, on the basis of the output selected first and second components, a time difference that is a difference between a time of detection of the partial discharge signal by the first sensor and a time of detection of the partial discharge signal by the second sensor; and a processing unit configured to locate occurrence of the partial discharge on the basis of the time difference detected by the time difference detecting unit, the distance from the first sensor to the connection between the gas-insulated apparatus and the power cable, the distance from the second sensor to the connection between the gas-insulated apparatus and the power cable, a propagation velocity of the partial discharge signal in the gas-insulated apparatus, and a propagation velocity of the partial discharge signal in the power cable. a first sensor mounted to the gas-insulated apparatus and capable of detecting a partial discharge signal; a second sensor mounted to the power cable and capable of detecting the partial discharge signal; a frequency selecting unit connected to the first sensor, and connected to the second sensor, wherein the frequency selecting unit is configured to select a first component of a first predetermined detection frequency from the partial discharge signal output from the first sensor and to output the selected first component, and to select a second component of a second predetermined detection frequency from the partial discharge signal output from the second sensor and to output the selected second component, wherein each respective predetermined detection frequency is the frequency used for the detection of the partial discharge signal output from the corresponding sensor; and connected to the first sensor, and connected to the second sensor, wherein the frequency selecting unit is configured to select a first component of a first predetermined detection frequency from the partial discharge signal output from the first sensor and to output the selected first component, and to select a second component of a second predetermined detection frequency from the partial discharge signal output from the second sensor and to output the selected second component, wherein each respective predetermined detection frequency is the frequency used for the detection of the partial discharge signal output from the corresponding sensor; and to select a first component of a first predetermined detection frequency from the partial discharge signal output from the first sensor and to output the selected first component, and to select a second component of a second predetermined detection frequency from the partial discharge signal output from the second sensor and to output the selected second component, wherein each respective predetermined detection frequency is the frequency used for the detection of the partial discharge signal output from the corresponding sensor; and a time difference detecting unit configured to detect, on the basis of the output selected first and second components, a time difference that is a difference between a time of detection of the partial discharge signal by the first sensor and a time of detection of the partial discharge signal by the second sensor; and a processing unit configured to locate occurrence of the partial discharge on the basis of the time difference detected by the time difference detecting unit, the distance from the first sensor to the connection between the gas-insulated apparatus and the power cable, the distance from the second sensor to the connection between the gas-insulated apparatus and the power cable, a propagation velocity of the partial discharge signal in the gas-insulated apparatus, and a propagation velocity of the partial discharge signal in the power cable. the time difference detected by the time difference detecting unit, the distance from the first sensor to the connection between the gas-insulated apparatus and the power cable, the distance from the second sensor to the connection between the gas-insulated apparatus and the power cable, a propagation velocity of the partial discharge signal in the gas-insulated apparatus, and a propagation velocity of the partial discharge signal in the power cable.