Electric power system simulator

An electric power system simulator comprising:

• first calculating means for calculating a dynamic characteristics of a generator;
• second calculating means for calculating a power transmission condition of an entire electric power system network, indicative of fault or normal operation, for outputting an output power and a terminal voltage of said generator;
• and
• communicating means for communicating between said first calculating means and said second calculating means by transferring information;
• wherein said first calculating means cyclically calculates information on an internal induced voltage of said generator representative of condition of said generator based on the output power and the terminal voltage of said generator outputted from said second calculating means, and outputs said information to said second calculating means through said communicating means,
• said second calculating means calculates power transmission condition of said electric power system network at predetermined time with using said information and various constants of said electric power system network, and
• said condition change of the electric power system including said generator is serially simulated by alternately executing the calculation of said first calculating means and the calculation of said second calculating means.

An electric power system simulator comprising:

• first calculating means, having
• phase calculating means for calculating a phase of internal induced voltage of a generator,
• phase correcting means for correcting calculated phase value by said phase calculating means by subtracting from the calculated phase value by value of 360.degree. multiplied by an integer or adding to the calculated phase value by value of 360.degree. multiplied by an integer when an absolute value of the phase value calculated by said phase calculating means exceeds 360.degree., and
• amplitude calculating means for calculating an amplitude of internal induced voltage of said generator, and for calculating a dynamic characteristic of a generator;
• and
• second calculating means for calculating a power transmission condition of an entire electric power system network, indicative of fault or normal operation;
• wherein said first calculating means cyclically calculates an amplitude and the phase of internal induced voltage of said generator representative of condition of said generator based on the output power and the terminal voltage of said generator outputted from said second calculating means, and outputs an information of calculated result to said second calculating means,
• said second calculating means calculates power transmission condition of said electric power system network at predetermined time with using said information and various constants of said electric power system network, and
• said condition change of the electric power system including said generator is serially simulated by alternately executing the calculation of said first calculating means and the calculation of said second calculating means.

An electric power system simulator connected to an external data source comprising:

• an analog type simulator which simulates a phenomenon of an electric power system by combining a plurality of simulation devices each of which simulates each element constituting electric power system;
• a digital type simulator which calculates a phenomenon of the electric power system, based on data supplied from said external data source, at a speed same as or near the proceeding speed of the real phenomenon and simulates the phenomenon in real time;
• and
• an A/D-D/A converter which transfers data between said analog type simulator and said digital type simulator.