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目前,我国电网采用的主要无功补偿技术是集中补偿与就地补偿技术。而当前使用最多的就是并联电容器、并联电抗器,部分电网还采用先进的静止无功发生器（sVG）、静止无功补偿电抗器（SVC）等。本文主要举例叙述我国电网无功补偿技术的现状及无功补偿存在的问题,并举例提出今后我国无功补偿技术发展的方向。 相似文献
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基于IGBT的新型静止无功发生装置 总被引：1，自引：0，他引：1
无功功率是电力系统的重要参数,研制出快速、灵活,能在正负两个方向调节无功的装置,对保证供电质量有很大意义。新型静止无功发生装置(ASVG)是柔性交流输电技术(FACTS)的核心装置,可有效防止大型电网在无功不足状态下,因电压不稳造成的电网崩溃;分析了ASVG的结构及其原理并进行了仿真。 相似文献
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本文对模糊控制在静止无功发生器中的应用价值进行研究,构建基于模型-PO控制的STATCOM控制算法,分析静止无功发生器结合模糊控制的优良性能,为模糊控制在静止无功发生器中的实际应用提供理论基础与实践参考。 相似文献
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本文研究的基点是电力系统可控电抗器无功功率补偿技术.对晶闸管可控电抗器补偿无功功率电子电力系统的硬件进行了设计,且进行了基于MCR的无功电压综合补偿的实验验证, 相似文献
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城市供电作为日常居民生活密切相关的事情,它的运行既要求实用性,同时也必须满足较高的性价比。针对这个特点,静止无功补偿装置可以用来补偿运行网络中的无功,有效地降低了电力损耗,提高了性价比。如何实现静止无功补偿?可以通过瞬时对称分析这种方法,寻求一个配电网络系统无功电流,这种方法除了可以求出实时的无功电流,也可以提高在SVC补偿中的精确性和可靠性。 相似文献
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This paper is aimed to investigate the operating characteristics of a static synchronous compensator (STATCOM) integrated with superconducting magnetic energy storage (SMES) for high power applications in the transmission network level. The STATCOM controller topology comprises multi-level multi-pulse neutral-point clamped-type (NPC) voltage source inverters (VSIs) using the harmonics cancellation technique, and incorporates a SMES coil. An innovative two-quadrant multi-level dc-dc converter is proposed to effectively interface the STATCOM with the superconducting coil using a buck-boost topology with neutral point voltage control capabilities; thus enabling to simultaneously control both active and reactive power exchange with the high voltage power system. A detailed analysis of major system variables is presented, including analytical results and digital simulations using the MATLAB/Simulink environment. Moreover, a three-level control scheme is designed, including a full decoupled current control strategy in the d-q reference frame with a novel controller to prevent the STATCOM dc bus capacitors voltage drift/imbalance and an enhanced power system frequency controller. 相似文献
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This paper addresses the problem of bipartite output consensus of heterogeneous multi-agent systems over signed graphs. First, under the assumption that the sub-graph describing the communication topology among the agents is connected, a fully distributed protocol is provided to make the heterogeneous agents achieve bipartite output consensus. Then for the case that the topology graph has a directed spanning tree, a novel adaptive consensus protocol is designed, which also avoids using any global information. Each of these two protocols consists of a solution pair of the regulation equation and a homogeneous compensator. Numerical simulations show the effectiveness of the proposed approach. 相似文献
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近年来,随着电网的进一步完善,工农业生产用电规模不断扩大,使得电力供需矛盾越来越突出。电力的供不应求迫使人们想要降损节能。人们根据电力网的运行特点,从无功传输过程消耗有功的角度,推行了无功补偿。电力系统的无功补偿是提高系统运行电压,减小网损,提高系统稳定水平的有效手段。现对当前国内外的无功补偿理论和几种补偿设备进行了讨论,对目前无功补偿的问题进行了一定的探讨和研究。 相似文献
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《Journal of The Franklin Institute》2021,358(14):7221-7236
This paper researches the output consensus problem of heterogeneous linear multi-agent systems with cooperative and antagonistic interactions. Two fixed-time state compensator control approaches, one static dynamic and the other distributed adaptive dynamic, are considered for heterogeneous systems subject to logarithmic quantization. Then, a fixed-time output regulation control protocol is constructed to cope with the problem of bipartite output consensus and adaptive fixed-time output consensus of heterogeneous systems which is fully distributed without any global information. Besides, the fully distributed adaptive algorithm is employed to calculate the system matrix of leader and it’s also effectively eliminated the harmful chattering. Finally, two simulations are carried out to testify the feasibility of theoretical results. 相似文献
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文章主要介绍了利用PSD-BPA潮流计算软件进行县级电网潮流计算的方法、步骤及进行县级电网潮流计算结果优化调整的一些具体措施;并以横县电网为例,介绍了县级电网无功优化结果对县级电网规划建设的重要作用。除此之外,文章还简单的介绍了进行县级电网潮流计算的方法、步骤和进行县级电网规划建设的原则、方法和步骤,以期能为有关部门进行县级电网的无功优化和规划建设提供一定的参考。 相似文献
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The optimal location of a static synchronous compensator (STATCOM) and its coordinated design with power system stabilizers (PSSs) for power system stability improvement are presented in this paper. First, the location of STATCOM to improve transient stability is formulated as an optimization problem and particle swarm optimization (PSO) is employed to search for its optimal location. Then, coordinated design problem of STATCOM-based controller with multiple PSS is formulated as an optimization problem and optimal controller parameters are obtained using PSO. A two-area test system is used to show the effectiveness of the proposed approach for determining the optimal location and controller parameters for power system stability improvement. The nonlinear simulation results show that optimally located STATCOM improves the transient stability and coordinated design of STATCOM-based controller and PSSs improve greatly the system damping. Finally, the coordinated design problem is extended to a four-machine two-area system and the results show that the inter-area and local modes of oscillations are well damped with the proposed PSO-optimized controllers. 相似文献
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对自然垄断行业的管制与竞争效率进行了比较分析,同时通过比较美国天然气行业和电信行业的管制及其发展,分析了自然垄断行业管制的实践及其发展趋势;在此基础上,针对我国电力行业管制的现状,对我国电力行业的管制改革提出了政策性建议。 相似文献
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我国区域电力市场规制的相关问题探析 总被引：3，自引：0，他引：3
对于正在走向市场化的电力产业而言,政府的法律、法规、制度以及各种直接规制,既是电力市场化的制度前提,也是电力市场化有效推进的重要保证。区域电力市场规制既是电力规制的重要组成部分,也是区域电力市场建立和有效运行的前提条件。中央与区域电力监管机构的不同定位,决定了其规制的重心和方式的不同。相对于中央电力规制提出与确定统一的规制政策、法律和法规而言,区域电力市场的规制主要应侧重于维护和保障区域电力市场乃至区域电力产业的健康有序发展。具体到执行层面,区域电力市场规制的重心和着力点主要是进入的合法性、竞争的有效性、交易的规范与公平性以及运营的安全性规制。 相似文献