Frequency Smoothing Control System and Method for electrical power system using a Synchronous Generators in association with Back-to-Back Convertors

• Main Author: HONG JUN HEE
• Format: Patent
• Language: English; Korean
• Published: 22.02.2022
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROL OR REGULATION THEREOF; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The present invention relates to a frequency smoothing control system for an electrical power system using a synchronous generator attached with a back-to-back convertor, which comprises: a plurality of synchronous generators; and a back-to-back converter which is connected to at least one of the plurality of synchronous generators. The back-to-back converter includes a controller. The controller controls the output of the synchronous generator according to a frequency change value of an electrical power system to smooth the frequency of the electrical power system. According to the present invention, it is possible to quickly smooth the frequency of the electrical power system without stressing the turbine of the synchronous generator. 본 발명은 백투백 컨버터를 부착한 동기발전기를 이용한 전력계통 주파수 평활화 제어 시스템으로서, 복수개의 동기발전기와, 상기 복수개의 동기발전기 중 적어도 하나에 연결된 백투백 컨버터를 포함하고, 상기 백투백 컨버터는 제어기를 포함하며, 상기 제어기는, 전력계통의 주파수 변동값에 따라 상기 동기발전기의 출력을 제어하여 전력계통의 주파수를 평활화하는 것을 특징으로 한다. 본 발명에 따르면, 동기발전기의 터빈에 스트레스를 주지 않으면서도 전력계통의 신속한 주파수 평활화를 가능하게 한다.