code: def init0(self, dae):
          
          if not self.system.pflow.config.flatstart:
              dae.y[self.a] = self.angle + 1e-10 * uniform(self.n)
              dae.y[self.v] = self.voltage
          else:
              dae.y[self.a] = matrix(0.0,
                                     (self.n, 1), 'd') + 1e-10 * uniform(self.n)
              dae.y[self.v] = matrix(1.0, (self.n, 1), 'd')
docs: Set bus Va and Vm initial values