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This paper derives the index of dynamic interactions (IDI), which is the sensitivity of a power system electromechanical oscillation mode (EOM) of concern to the dynamic interactions introduced by a grid-connected double-fed induction generator (DFIG). Based on the IDI, analysis is carried out with the following generally-applicable conclusions obtained: 1) Impact of dynamic interactions introduced...
Routing-driven key management schemes integrated with centralized routing for heterogeneous sensor networks (HSNs) mainly have two shortcomings: high communication energy consumption, and large storage requirements. To address the above problems, we propose a distributed key management scheme for HSNs. Taking advantage of distributed routing protocol, the scheme achieves to reduce communication cost...
Conventionally, in order to increase the heat transfer from generator circuit breaker(GCB), the forced air circulation or the heat exchanger with motor driven fan will be used to increase the current carrying capacity, even so it is still not able to achieve fast release of heat from the current carrying conductor of the GCB. In this article, following the boiling heat transfer principle to analyze...
In order to combine the advantage of quantitative and qualitative analysis, a scheme is put forward to assess network security situation by using Honeynet. Firstly defines various network security assessment concepts, and make a quantitative model for network security situation assessment using virtual honeynet. With the relationships among honeynet active, host active of computer networks and IP...
Fatigue failure of the circuit board's research focuses on the influence to the circuit board of vibration of rigid circuit board type, distribution of Electronic Components on the board etc. And there is relatively little research to the flexible circuit board's fatigue life research. Local stress-strain method is used to predict the fatigue life. Simulate actual fatigue test load conditions to established...
In order to improve the real-time performance of the switched Ethernet, genetic algorithm is used to optimize the subnet partition. Firstly, the existing methods are analyzed. Secondly, a linked list encoding and new operators for this special encoding are designed. Then, based on the network calculus, the calculating expression of the maximum network delay is proposed. Lastly, an experiment on ring...
Computer is the vital element for safety-critical control system. This paper presents a component-based fail-safe computer in railway signal interlocking system (safety interlock computer - SIC). We discuss the methodology and the safety tactics of SIC in detail, moreover, the architecture and safety computation principle are deeply analyzed. The hardware safety integrity level of SIC has been verified...
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