Análisis de estabilidad de frecuencia del sistema eléctrico ecuatoriano incorporando generación eólica con escenarios de demada, generación y contingencias

Abstract

Electrical power systems worldwide tend to have environmental responsibility and energy sovereignty, with the incorporation of non-conventional renewable energy and introducing technical-operational problems. The Ecuadorian National Interconnected System (SNI) was analyzed considering the base case and 4 scenarios; The base case establishes the current system with thermal, hydraulic and wind generation with 66.6MW and a system demand of 4261.20MW, the demand was covered with a contribution of 91% hydraulic generation, 8% thermal and 1% wind; In scenario 3 with a wind generation penetration of 647.19MW, the output of unit U6 of the Paute Molino plant and a demand of 4261.20MW, the demand was covered with 79% hydraulic, 7% thermal and 13% wind, failing to comply the frequency limits allowed by regulatory entities at 0.25%; For scenario 4, it considers a wind generation penetration of 885.10MW, output from unit U6 of the Paute Molino plant and a demand of 4261.20MW covered with 71% hydraulic, 8% thermal and 20% wind, failing to comply with the frequency limits allowed by regulatory entities by 3.5%. Simulations are carried out in Simulink Matlab with: Base case criteria and the 4 scenarios considered, generation agents most representative of the Ecuadorian SNI and a contribution system to the Primary Frequency Control (CPF) for wind generation with virtual inertial; Important improvements are obtained in the contribution to the CPF by the wind generation agent.