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Bulk power transfer requirements over long distances within a country or between neighboring countries as well as rapid increase in the number of offshore wind farms, have increased the application of high voltage DC links. Apart from the controllable power flow function of HVDC systems, advanced controllers can be employed to extend their functionality for dynamic and transient stability improvement...
In this paper we propose to analyze the effects which errant or missing data may have on the stability analysis of a system during transient events, applying single machine equivalent (SIME) modelling for the analyses. As modern power systems are updated with the latest technologies, the deployment of PMUs is expected to increase the observability of the network both in real-time and for post-event...
Considering transient stability control measures for current power system is time consuming and difficult to apply online, a WAMS-based control strategy is presented. In the first, the data column provided by WAMS is used to obtain the future trajectory of each generator's power angle δ after fault by numerical processing. Then, a new idea of calculating disturbance power based on prediction is realized...
Introducing the EV into the electric distribution network .which has already become the hot spot in the smart grids. Its load has an effect on the involvement considering the uncertainties of load change. This paper presents the method of calculating network losses, considering the impact of EV and take into account the uncertainly of load. According to the view of slightly increased rate of network...
Traditional direct power transaction mostly based on the matching of bilateral quantity and prices of electricity. It is lack of effective means to optimize the electric transmission quality in the transaction. This paper considers the electric characteristic curves of the purchase and sales sides, and builds an auxiliary model for transaction which is based on bilateral patterns technical matching...
Rapid development and large-scale application of distributed energy resources (DER for short) will bring new opportunities and challenges to intelligent marketing. Based on technology roadmap of smart grid, the developmental outlook of DER is proposed. Some new concepts are introduced which contain information management of three-level control, principle of power-consumed, virtual marketing, and demand-side...
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