code: def reset(self):
          
          logger.info("Reseting environment.")
  
          self._step = 0
  
          # Reset the set-point of each generator to its original value.
          gs = [g for g in self.case.online_generators if g.bus.type !=REFERENCE]
          for i, g in enumerate(gs):
              g.p = self._Pg0[i]
  
          # Apply load profile to the original demand at each bus.
          for i, b in enumerate([b for b in self.case.buses if b.type == PQ]):
              b.p_demand = self._Pd0[i] * self.profile[self._step]
  
          # Initialise the record of generator set-points.
          self._Pg = zeros((len(self.case.online_generators), len(self.profile)))
  
          # Apply the first load profile value.
  #        self.step()
  
          self.case.reset()
docs: Re-initialises the environment.