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3.3安全设施电源(应急电源)兼做备用电源
《供规》对于备用电源和应急电源,有如下规定:“3.0.3一级负荷中特别重要的负荷供电,应符合下列要求:除应由双重电源供电外,尚应增设应急电源,并严禁将其他负荷接入应急供电系统。 相似文献
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针对灾害条件下应急供电系统难以快速组网的问题,设计一种基于分散控制的微电网控制策略,实现应急电源快速分散组网及应急微电网频率、电压稳定性控制。根据所提控制策略,设计了相应的应急电源控制器;搭建了由2台应急电源组成的试验平台,模拟了应急微电网的试验环境,实现了在分层分散控制下应急电源投入、切除及负荷快速变动的试验。研究结果表明,该应急电源分散控制可实现灾害条件下应急微电网的快速分散组网。 相似文献
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针对传统的应急电源(EPS)系统应急供电时间短、切换时间长和不间断电源(UPS)不供电时网电对UPS须连续供电的问题,设计开发了基于DSP全数字控制的燃料电池应急电源系统。在设计中采用燃料电池作为主备用电源并结合蓄电池作为辅助电源的优势互补,延长了应急电源的供电时间。采用硬件直接实现网电掉电后自动切换的方法,切换时间能控制在10 ms之内,有效解决了传统应急电源切换时间长的问题。试验结果表明,方案所设计的应急电源具有安全可靠、应急时间长、切换时间短等一系列优点和较强的实用价值。 相似文献
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电力用户自备应急电源是应对电力突发事件的重要环节。通过对我国重要电力用户自备应急电源现状的分析,提出了2项自备应急电源配备与管理的对策:一是对电力用户实行分类分级管理;二是建立自备应急的管理机制。其中,前者包括重要电力用户概念、按用电性质分类和按重要程度分级;后者包括界定自备应急电源的配置范围和型式、界定自备应急电源的管理方式和程序以及建立自备应急电源管理的约束激励机制。 相似文献
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供电电源是电气系统中最为关键、重要的环节之一。很多工程中,除正常电源外,根据具体情况和用电需求,还需设置应急电源和备用电源。分析了应急电源和备用电源的概念和内涵,并结合规范和实际工程,探讨了应急电源和备用电源的供电范围、设置要求、电源类型以及系统构建形式。 相似文献
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本文从EPS与UPS的实际应用需求出发,通过分析构成EPS和UPS的各功能单元的设计思路和性能特征的不同点,根据它们各自的用途、设计理念,对EPS和UPS作了较为全面的分析与讨论。 相似文献
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研究了一种应用于钢铁厂供电系统中的三相应急电源系统(EPS)。将该EPS与厂电线路连接,作为后备电源使用。当市电供给出现故障时,EPS放电直流输出经过DC升压电路和PWM逆变器后为厂电系统提供快速响应容量。数字仿真结果验证了所设计的EPS系统能有效保障钢铁厂供电系统的稳定性和可靠性。 相似文献
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Leonardo Kessler Slongo Sara Vega Martínez Bruno Vale Barbosa Eiterer Eduardo Augusto Bezerra 《International Journal of Circuit Theory and Applications》2020,48(12):2153-2189
This paper presents four of the most employed nanosatellite's Electrical Power System (EPS) architectures, comparing their efficiency through simulations and experiments. Every circuit architecture has been mathematically modeled in order to discuss the solar panel control technique and the overall architecture efficiency. Solar panels and EPS components have been analytically modeled and tested in order to comprehend their impact on the EPS efficiency. A test stand has been proposed to evaluate the circuits, emulating the solar irradiance and the nanosatellite power consumption. The following electrical power systems have been designed, implemented, and tested: the directly coupled architecture, the very low dropout (VLDO) voltage regulator architecture, the maximum power point tracking (MPPT) with an integrated circuit, and the MPPT architecture with a discrete boost regulator. A case study has been presented, testing all the EPS architectures according to the Floripa-Sat I (1U CubeSat) power consumption profile. Experiments results have shown that, although the MPPT boost regulator architecture harvest more energy, it is the VLDO architecture that presents the best overall efficiency. 相似文献
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为了使汽车操作性能更优,设计了以16位定点DSP TMS320LF2047A为核心的电动助力转向系统控制器。控制系统主要由控制器、传感器和信号处理电路、助力电机及驱动电路等组成。介绍了系统的工作原理、控制器的硬件结构和软件设计,基本上满足了系统的要求。 相似文献
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Optimized coordinated control of LFC andSMES to enhance frequency stability of areal multi-source power system consideringhigh renewable energy penetration 下载免费PDF全文
With rapidly growing of Renewable Energy Sources (RESs) in renewable power systems, several disturbances
influence on the power systems such as; lack of system inertia that results from replacing the synchronous
generators with RESs and frequency/voltage fluctuations that resulting from the intermittent nature of the RESs.
Hence, the modern power systems become more susceptible to the system instability than conventional power
systems. Therefore, in this study, a new application of Superconducting Magnetic Energy Storage (SMES) (i.e.,
auxiliary Load Frequency Control (LFC)) has been integrated with the secondary frequency control (i.e., LFC) for
frequency stability enhancement of the Egyptian Power System (EPS) due to high RESs penetration. Where, the
coordinated control strategy is based on the PI controller that is optimally designed by the Particle Swarm
Optimization (PSO) algorithm to minimize the frequency deviations of the EPS. The EPS includes both
conventional generation units (i.e., non-reheat, reheat and hydraulic power plants) with inherent nonlinearities,
and RESs (i.e., wind and solar energy). System modelling and simulation results are carried out using Matlab/
Simulink® software. The simulation results reveal the robustness of the proposed coordinated control strategy
to preserve the system stability of the EPS with high penetration of RESs for different contingencies. 相似文献