Based on the introduction of soft cut-in control system,and considering the characters of stall-controlled wind turbines,this paper presents a simple and reliable digital trigger algorithm--Double Remainder Algorithm.

The paper analyzes the transition process of soft cut-in of wind turbines.

The soft cut-in device applying Atmel 89C51 MCU has been equipped successfully on the 600kW fixed pitch wind turbine generators.

Combining the interconnection of Shaanxi Luneng wind power to Jingbian power system, the scheme of wind farm integration into power system is supposed, using Var compensation and soft cut-in grid-connected.

Based on the current controller WP2060,soft-cut-in technology of the wind generator was analized,and the experiment result proved the effectiviness and feasibility of the controller.

Design on the grid-connected PV generator with multi-tracking system;

Disturbance rejection controller for photovoltaic three-phase grid-connected system;

Novel Vector Control Strategy with Active and Reactive Power Decoupling Control for Wind Power Grid-connected Inverter;

Cutting-in Control of the VSCF Wind-power Generator Based on Auto-disturbance Rejection Controller;

With combination of integral variable structure control(IVSC) and field-oriented vector control technique,a control strategy was presented for smooth no-load cutting-in of variable-speed constant-frequency double-fed wind-power generator.

This article introduces the work principle of diesel generator set connected in parallel to municipal electric power, and in detail discusses the parallel connection which is applied in the second-stage engineering of a certain power plant.

Auto Quasi Corresponding-period Equipment is designed to realize a generator’ rapid parallel connection to electrical network in a power plant.

The necessity of developing computerized automatic parallel connection device for power system is analyzed.