Tsinghua University

Peking University

State Grid Corporation of China

Beijing Sifang Automation Co., Ltd.

Beijing Sifang Engineering Co., Ltd.

Jingtao Wu

Gang Duan

Wei Zhang

Jie Liu

Xiaoyan Sun

Jie Song

Dong Yan Yang

Fang Li

Chao Lu

Fang Tian

Jianfeng Yan

Yu Dong

Yaozhong Xin

Hongzhu Tao

Xuemei Chen

Embodiments of the present disclosure provide an energy storage system in thermal power unit coordinated frequency regulation control method, including: obtaining a status of an combined system of energy storage system and thermal power unit at a certain time point; determining a working period of the combined system according to the status of the combined system; determining a target active power of the combined system according to the working period of the combined system, and determining a target active power of the energy storage system according to the target active power of the combined system in cooperation with an active power of the thermal power unit; and correcting the target active power of the energy storage system according to a power limit and a capacity limit of the energy storage system, to obtain a final active power of the energy storage system.

Energy storage system in thermal power unit coordinated frequency regulation control method

A state-matrix-independent dynamic process estimation method in real-time for weakly observable measurement nodes without Phasor Measurement Unit(PMU) is only dependent on real-time measurement dynamic data of measurement nodes with PMU and measurement data of Supervisory Control And Data Acquisition (SCADA) system in electric power system or state estimation data. According to the SCADA measurement data or state estimation data at some continuous moments, the method utilizes recursive least squares solution to find a linear combination relationship between variation of measurement parameter to be estimated of nodes without PMU and variation of corresponding measurement parameter of nodes with PMU. Using the linear combination of relationship, the dynamic process of measurement nodes without PMU is estimated in real-time. The method provides high estimation precision and meets error requirements of engineering application.

State-matrix-independent dynamic process estimation method in real-time for weakly observable measurement nodes without PMU

A method and a system for a comprehensive analysis of low frequency oscillation. The method includes: firstly, initiating a wide area measurement system WAMS () to perform real-time monitoring; transmitting real-time low frequency oscillation information to a dynamic early-warning system () periodically; then converting the low frequency oscillation information received by the dynamic early-warning system () into an input file for stability calculation with small disturbance, and performing related calculation; finally, transmitting the calculated result back to the wide area measurement system WAMS () and a human-machine system interface for output. The system includes: the wide area measurement system WAMS (), the dynamic early-warning system (), a system for stability calculation with small disturbance () and an output system ().

Method and system for a comprehensive analysis of low frequency oscillation

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Beijing, China

Jingtao Wu