The paper uses a magnetic modulation current transformer method to detect transient waveform residual currents containing pulsating DC components and even smooth DC components. At the same time, it uses IIR-based digital low-pass filters to filter the collected signals, which improves Filtering accuracy. The software design is based on the floating-point DSP-TMS320F28335, which realizes the accurate sampling and analysis of the transient waveform residual current, and the transient waveform residual current detection meets the standard requirements.
With the slowdown of external economic growth, more stringent review of investment execution, and in-depth promotion and implementation of transmission and distribution price reform, the implementation of lean management of state grid investment has been accelerated. The improvement of lean management level of 10kV projects, which account for more than half of the investment in power grid infrastructure, plays a greater role in promoting the overall investment efficiency of power grid. The lean management of power grid investment emphasizes “scientific decision making before investment - precise implementation in the event - scientific evaluation after the event”. From the perspective of investment lean management - strengthening the precise implementation in the matter, this paper takes the power grid infrastructure projects of 10kV and below as the research object, through combing the management key points and relevant management requirements of key nodes in the whole process, from the aspects of compliance, rationality and effectiveness of investment execution, this paper sorts out and determines the investment execution analysis indicators and evaluation rules, which provides the basis for the next step of investment execution index scenario application, and also provides support for comprehensively improving the lean management level of investment in 10kV and below power grid infrastructure projects.
With the increase of XLPE cable we used in power network, the corresponding technology of on-line monitoring becomes increasingly important. For improving the accuracy of on-line monitoring assessment of XLPE cable, we researched an assessment method and device of XLPE cable's insulation state by Fuzzy Theory. According to legitimately distribute between Fuzzy set and membership function in Fuzzy Theory, we solved the problem that how to distribute the membership of XLPE cable's insulation parameters and accomplished the assessment of XPLE cable's insulation state. The experimental operation results showed that the device can operate stably and interactwith background monitoring platform in real-time, which accomplished the on-line monitoring of XLPE cable and assessment of its insulation state. It can effectively ensure the safety of power network's operation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.