The invention discloses a working condition determination and protection commissioning and ceasing method with an anti-error function. The working condition determination and protection commissioningand ceasing method includes the steps: 1) acquiring the input amount through the double position contact; 2) determining whether the double position contact is normal; 3) calculating determination basis data; 4) according to the determination basis data, determining the operating working condition; and 5) according to the operating working condition, commissioning and ceasing a protection device.The working condition determination and protection commissioning and ceasing method with an anti-error function enables the determination result to accurately represent the practical operating state of the unit by setting sufficient and reasonable working condition and the determination logics, can realize acquisition of the input by means of the double position contact, and can increase the capability of anti-misoperation so as to enable the protection device to be triggered correctly to enable the water drawing and energy storage unit to accurately satisfy the electric power demand of the power grid to realize peak load and frequency regulation.