Due to the long-distance transmission, external grid cannot effectively support access point voltage (APV) of large-scale wind farm (WF), which thus entails DFIG-based WF provide its ancillary services on reactive power generation. Considering factors limited down-sized converter capacity, various operating modes turbines (WTs), and large pressure communication central governor, this paper prop...

interorganizational coordination (ioc) is a critical part of planning, because planning mostly involves multiple organizational interactions. investment and employment are considered as multi-dimensional and multi-sectional challenges that the management of them requires intersectional and interorganizational cooperation. the goal of this research is the investigation of the interorganizational...

a new output structure for class e power amplifier (pa) is proposed in this paper. a series lc resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. this resonator causes low impedance at the second harmonic. the output circuit is designed to shape the switch voltage of the class e amplifier and lower the voltage stress of the transistor. t...

Voltage unbalance has gained more attention due to a rapid increase in single-phase distributed energy resources (DERs) penetration compound with existing characteristics of low voltage distribution network. The purposes this article are summarise various techniques on compensation from three different strategies: (1) based passive approach and advanced power electronics; (2) Techniques three-p...

Implementation of the series connection SiC MOSFETs in medium voltage (MV) high power converters faces a challenges, including electrical/thermal stress imbalance, insulation coordination design, dv/dt elimination and robustness under variable operating conditions. This paper stresses these challenges proposes comprehensive design 9.6 kV/200 A block based on MOSFETs. The has been verified conti...

Aiming at the characteristics of complex nonlinearity, strong uncertainty and coupling modern power grid lack coordination frequent action reactive equipment in multi-stage substations, this paper studies develops a simulation platform urban voltage control based on flow calculation, which is used to generate samples with comprehensive coverage, wide range few samples. The research results show...

The development of the Internet Energy (IoE) is facilitated by integration information technology and growing utilization distributed energy resources (DERs). usage DERs, particularly photovoltaic systems battery storage systems, in IoE has revealed potential for DERs to be leveraged grid control. To encourage DER owners participate management, operators must coordinate with guaranteed fairness...

this paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. the hybrid dc power sources are connected to grid using power electronic converters include dc-dc converter and grid connected voltage source inverter. the power from hybrid power sources is controlled during voltage sag by designing of control strategy for dc-dc converter....

nowadays, congestion management is one of the major tasks accomplished by system operators to warrant the operation of transmission system within operating limits. this has resulted in unanticipated congestion interfaces in regional transmission systems. the system is, however, unable to evolve at a rate which is required to meet the quickly changing demand of competitive markets. to make the m...

Solid Electrolytes To develop electrolytes for high energy density solid-state batteries, in article number 2103049, Fang Lian and co-workers propose a novel “polymer-in-salt” solid electrolyte (PISE) via supramolecular interaction coordination between PME polymers LiPVFM/LiTFSI composite Li salts. The PISE possesses superior lithium ion transference number, ionic conductivity, excellent electr...