Broken line comprehensive alarm device

The invention belongs to the technical field of electric power system protection electric appliances, and discloses a broken line comprehensive alarm device which comprises a data judgment system, an alarm system, a ground resistance sampling and signal comparison operation processing unit and an unbalance and phase line reverse connection signal detection circuit unit. The grounding resistance sampling and signal comparison operation processing unit is used for filtering and converting a detection result of the power supply voltage control and detection unit, so that the CPU data acquisition and judgment unit is used for detecting a resistance value and a voltage value between N and PE; the device is used for field, movement and networking remote alarm when a protection grounding wire (also known as a protection null line) is broken due to man-made, omission or other accidental reasons, plays a positive early effective warning and prevention role in preventing accidental electrification of equipment and acci