Method and device for locating fault, computer device, and storage medium

A device for locating a fault, wherein the device is applied to an energy storage system comprising a first battery module, a second battery module, a sensor, and a power conversion system, a first branch where the first battery module is arranged and a second branch where the second battery module is arranged are connected in parallel and are electrically connected to the sensor, the power conversion system is electrically connected to the first battery module and the second battery module, the sensor senses a first signal, and the device comprises:

• an acquiring module configured to switch the first branch and the second branch to a target state and determine a second signal in the target state, when the first signal meets a first preset condition, wherein the target state comprises an ON state and an OFF state, and the first preset condition is set based on signal features of faults to be located for determining whether a signal sensed by the sensor is a fault signal;
• a locating module configured to locate the fault according to a fault determination condition based on the first signal and the second signal, wherein the fault determination conditional is set based on signal features of faults at different positions;
• and
• a control module configured to disconnect a branch where the fault is located.