Dynamic Frequency Analysis on Industrial Electric Power Network under External Fault Condition

The condition of thermal power plant of some SINOPEC is simply introduced first, after choosing its receiving operation, enterprise internal power´s dynamic frequency characteristic mechanism has been analyzed under external fault condition, and then arriving at a conclusion that the dynamic frequency characteristic has something to do with active power shortage and frequency adjustment effect modulus of load. At last, having selected the reasonable failure mode and mathematical models in software PSASP7.0 to simulate this dynamic frequency characteristics curve of the system, we can verify the validity of the conclusion. The above is good for revealing the weak link of the plant in future and laying the foundation for finding the way to improve the reliability of the system. At the same time, it also has some reference value for other enterprise grid.