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Most of current arc suppression coil compensation system works based on the magnitude of post-fault distributed capacitance. This system can not offer compensation before fault, so in power system with large distributed capacitance current, short circuit shock is inevitable. This paper proposes an automatic arc suppression coil compensation technology based on fixed-frequency signal injection, it...
Transmission line parameter is important for obtaining power network structure, generating power system node admittance matrix or impedance matrix to calculate power flow, calculating short-circuit current, and setting relaying protection devices. But actually, transmission line parameters applied in power system are mostly experience values or offline measuring values provided by manufacturers, they...
Semantic Web services (SWS) and business process management (BPM) technologies are gradually applied in many domains like electronic commerce and enterprise application integration, which has unavoidably led to the requirements and concerns for effectively recovering from kinds of failures, especially in complex, untamed and dynamic Web environments. Generally, Exception handling is considered to...
A unified pilot protection system is proposed. By virtue of optical fiber communication system, unified pilot protection system can deliver multi-information such as current and voltage sample value, all kinds of digital information. Applying these information, the protection system can not only accomplish many criteria in one system to enhance the performances of pilot protection, also can achieve...
Fiber Optic communication has been applied widely in power protection system. The appearance of digital communication technology makes all kinds of information exchange reliable and fast, and the construction of unified pilot protection system is possible. Based on abundant information, the unified pilot protection system can apply several protection criteria to improve the performance of relay protection...
The traditional Architectural Description Languages ADLs lack the ability to describe the crosscutting concerns and crosscutting interactions in the software architecture, which result in the design of the system difficulty in comprehension, evolution and reuse. This paper proposes a new Aspect-Oriented ADL-AC2-ADL to provide a formal basis for representation of the tangling and scattering concerns...
Crosscutting behaviors and features of architectural units have always been a tricky issue in software architecture design. If not well treated, they may cause some unnecessary coupling among architectural units and hamper maintenance, evolution and reusability of software products. Appropriate modeling approaches and expressions contribute to the solution of these problems. This paper proposes an...
Three types of rice cultivars (indica, japonica and hybrid rice) with four levels of amylose were selected for assessing variability in starch digestibility. A vitro enzymatic starch digestion method was applied to estimate the glycemic index in vivo based on the kinetics of starch hydrolysis in vitro. The results indicated that significant differences in term of glycemic response were observed in...
A new pyridylazo reagent, 5-(5-nitro-2-pyridylazo)-2,4-diaminotoluene (5-NO 2 -PADAT) has been synthesized, and found to be a good chromogenic reagent for palladium. In sulfuric acid, hydrochloric acid and perchloric acid palladium reacts with 5-NO 2 -PADAT to form a 1:1 chelate, exhibiting an absorption maximum at 592 nm. The apparent molar absorptivity is 1.25 10 5 1...
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