Reconfigurable computing is that the logical resources in the system can be reconfigured according to the real-time changing data flow to achieve different calculation functions. The reconfigurable computing system has both high efficiency on hardware and universality of software. The field programmable gate array (FPGA)-based real-time simulator for active distribution networks (ADNs) requires a long compilation time for case modification, with low efficiency and low versatility, making it inconvenient and difficult for users. To solve the problem of long compile time with a new case, a universal design of the FPGA-based real-time simulator for ADNs based on reconfigurable computing is proposed in this paper. It includes the universal design of the simulation parameter configuration, the simulation initial value setting, the linear equations solving module and the simulation result output module. The proposed universal design of the simulator makes the modification and change of the cases and parameters without recompiling and further improves the simulation efficiency. Simulation results are conducted and compared with PSCAD/EMTDC to validate the correctness and effectiveness of the universal design.
Making use of Cortex M3 processor, a multi-channel wireless alarm is proposed in this paper (patent number: 201220357699.3). The proposed multi-channel wireless alarm can be used in the place where have a large number and dense monitoring points. In order to realize the target of one receiving unit and many transmitting units, the modules of PT2262/PT2272 and STM32F103RBT6 microcontroller which had Cortex M3 core were used in this system. Compared with the traditional 80C51 microcontroller systems, this design overcome the disadvantage of the IO ports of 80C51 microcontroller which only have the high level and low level stages. This disadvantage make 80C51 microcontroller could not full use the addressing ability of PT2272 address pins which could be high resistance, high level and low level stages, So the design of this paper effectively expanding the number of alarm system monitoring.
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