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A bipolar dc microgrid features three voltage levels and is capable of transmitting power more efficiently than a unipolar system. This paper proposes a droop control to achieve load sharing and voltage balancing in such a microgrid system. Droop control is adopted to ensure that autonomous sharing of load power can be realized without communication. Moreover, the positive and negative pole voltages...
This paper studied the SOC characteristics of the unplanned power failures in distribution network. In order to discover the SOC characteristics of the power failures, the statistical data of reliability in one middle-size city in China are presented firstly. The total interruption duration of customers and total interruption duration of system of unplanned power failures are considered as the variables...
There are many forms of network structures in the process of smart substation layer. It is significant to research the process layer's reliability under different network structures of relay protection system for the network structure selection of process layer and engineering application. Based on the digitized substation relay protection system structure characteristic, this paper puts forward a...
Base Station Cooperation (BSC), which exchanges information through a high-speed optical fibre back-haul to increase the diversity gain, has been considered as a promising technique for combating co-channel interference in multi-cell communication systems. A novel reputation-weighted based data fusion scheme for Uplink-BSC (UBSC) systems is proposed in this paper, which exploited the dissimilarity...
Microgrid technologies are highly developed in low voltage networks, improving the power supply reliability and energy efficiency. Therefore, in this paper, the concept, including the configuration, principle and operation of microgrid, will be specified, comparing the microgrid with the prior distributed generation. Additionally, in order to justify the feasibility, the economical benefit analysis...
Stream processing is widely used by today's applications such as financial data analysis and disaster response. In distributed stream processing systems, machine fail-stop events are handled by either active standby or passive standby. However, existing high availability (HA) schemes have not sufficiently addressed the situation when a machine becomes temporarily unavailable due to data rate spikes,...
With the increasing amount of distributed computing systems applied in wide range of critical domains, the requirement of high reliability and high availability of distributed computing systems tend to more and more urgent, that the study of distributed fault-tolerant system become more significance. This paper provides a model of triple-modular redundancy dynamic fault-tolerant system, and the reliability...
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