Method for charging first-cycle reactor core of pressurized water reactor under condition of no additional primary neutron source

The invention belongs to the technical field of engineering design and operation of reactors, and particularly relates to a method for charging a first-cycle reactor core of a pressurized water reactor under the condition of no additional primary neutron source. The method comprises the following steps of: 1, installing a neutron detector monitoring device; 2, determining the effectiveness of an out-of-reactor high-sensitivity neutron detector, a source-range neutron detector and three sets of in-reactor temporary neutron counting devices; 3, performing critical safety supervision parameter calculation and alarming on secondary instrument monitoring equipment in the high-sensitivity neutron detector monitoring device and the three sets of temporary neutron counting devices in the reactor;4, determining the effectiveness of the protection function of the source-range neutron detector; 5, adding continuous monitoring and alarming functions of boron concentration critical safety supervision key parameters to a n