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The quasi-Z-source inverter (QZSI) has been presented suitable for solar photovoltaic applications mainly because of its one stage buck/boost capability and improved reliability. Carefully designed closed-loop control strategy is usually demanded by QZSI in photovoltaic applications for voltage boost, grid-connection and the maximum power point tracking (MPPT). Cascaded QZSI as to further step up...
The reactive power compensation of converter station plays an important role in the design of HVDC project. Reactive power configuration for HVDC converter station is introduced in this paper. The regulation and control of reactive power and devices are considered from both steady-state and dynamics aspects. The performance of various reactive power configuration methods are compared and summarized...
For large scale AC/DC transmission schemes with multiple series capacitors compensations, how to assess the risk of subsynchronous resonance (SSR) rapidly is of great practical significance to ensure that the grid operates safely and stably. According to the practical project of meeting summer peaks in 2009 of China Southern Power Grid (CSG), this paper combines a static equivalence method, Modified...
Series capacitors compensations may cause subsynchronous resonance (SSR) of steam turbine-generators. Using the principle which is depressed SSR by STATCOM and choosing appropriate measured data to design the subsynchronous damping control (SSDC) based on improved particle swarm optimization algorithm which is presented in this paper. Regard the controller parameter of STATCOM as adaptive parameter...
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