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This paper introduces the related theory of Adaptive Optical Current Transformer(AOCT), and gives one design method of its digital output interface using hardware platform DPS2812Mv2 on this basis. The interface circuit of Ethernet controller CS8900A and the method to compose driver software are given in details, and also the implementation of IEC61850-9 protocol is discussed. This solution has practical...
SOC is one of important parameters in energy control of super capacitors. Analyzed and compared the advantages and disadvantages in existing SOC algorithms between super capacitors with traditional batteries. This paper established first order nonlinear model of super capacitors which were used as power system storage devices. And considered the impact of equivalent capacitance value produced by terminal...
In the light of the characteristics of DC partial discharge, a set of typical DC partial discharge simulation model in the converter transformer was designed and built. This paper applies non-electrical measuring methods :ultrasonic sensor and photoelectric detection means such as photomultiplier tube (PMT) to test the partial discharge signals. Non-electrical measuring methods have strong ability...
Electric vehicle can reduce emissions to protect our city environment, as well as human's dependence on petrol. Therefore, it has become one of the world's common targets to develop the technology of electric vehicle. It is very essential to analyze the influence of electric vehicle on power grid and the model of electric vehicle charging is the foundation of simulation. In this paper, battery and...
With the development of State Strong Smart Grid, optical current transducer based on Faraday magneto-optical effect will become an ideal transducer to service the grid. However, due to the impact of temperature drift in practice, it can not work in the long-term stable situation. To solve the problem, the double closed-loop self-tuning method is proposed in this paper for the first time. This system...
With the development of HVDC project in State Strong Smart Grid, the Faraday magneto-optical effect optical current transformer has been paid more and more attention to. However, the signal to noise bands overlap in original Faraday effect DC optical current transformer causes its measurement accuracy to decrease. Therefore, this paper presents a Faraday magneto-optical effect DC optical sensing method...
This paper introduces a new kind of optical current transducer and its application in measuring high voltage DC and AC in power system. To solve the long-term operating stability and the steady state metering accuracy which influence the practical course of OCT, this paper presents a new method which combines the lock-in amplifier in slight photo-electric signal detection and a new higher stability...
Abstract:130Pm and 128Pr were produced by irradiation of 96Ru with 36Ar, and studied using a He-jet recoil tape transport system. Based on X- and - coincidence measurements, the (EC++) decay scheme of 130Pm was proposed for the first time and the (EC++) decay scheme of 128Pr was revised.
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