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加强企业自备电厂并网运行的规范化管理 总被引:1,自引:0,他引:1
文章结合宜昌地区电网自备电厂的具体特点,分析了自备电厂并网运行存在的管理漏洞和安全隐患,从自备电厂的并网运行管理、设备检修管理、负荷管理等方面进行了分析和探讨,提出了加强企业自备电厂并网运行管理的重要性和必要性。 相似文献
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近年来,为加快企业结构调整和节能减排工作,用电企业内兴起一股建设余热发电的潮流,部分用电企业通过建设热电联产自备电厂以解决电力短缺、能源综合利用等问题。个别企业甚至在未经立项审批的情况下,擅自建设了自备电厂。由于小机组孤立运行的不稳定性,往往需要并入大电网运行,目前荆州供电公司范围内在建和 相似文献
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企业自备电厂并网后变电站继电保护及自动装置整定方案 总被引:1,自引:0,他引:1
文章阐述了企业自备电厂接入系统后,系统运行的线路、变压器的保护整定值及与其相关的自动装置定值均需做出相应调整,以减少在主供电源线故障时因自备电厂接入对主系统设备的影响. 相似文献
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对客户自备电源的接入方式按其与电网并网以及不并网运行分别进行分析。探讨了不并网自备电源接入方式中几种典型方案的合理性,分析了自备电源并网运行对客户及电网的影响,针对其中对电网的不利影响,提出了电网应采取的措施。 相似文献
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针对有自备电厂并网的用户110 kV串供线路,分析了常规整定方法存在的问题.在保供电安全的前提下,提出了负荷侧开关保护动作于信号,通过主变间隙保护(接地短路)和相间距离保护(相间短路)实现解列重合闸,并与自备电厂自动解列装置配合的解决方案.并对可行性进行了分析论证,实践证明可有效提高供电可靠性. 相似文献
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《Electric Power Systems Research》2004,70(1):23-29
In China, national interconnected power system is a necessary trend for the development of electric power systems. Due to the time lag and temperature difference in different areas, the peak load discrepancy will influence the ratio of the regular components to stochastic components of system loads when power systems in different areas are connected. The power spectral densities of the regular loads and the stochastic ones were analyzed and compared in this paper, and how the load change works on the frequency regulation was also described with illustrations. The conclusion emphasized that primary frequency regulation is still relatively significant to the security of operating a huge interconnected power system, even if the system frequency could be controlled well through secondary regulation. 相似文献
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针对塔里木油田电网(塔北电网)的现况,指出了塔北电网与新疆电网并网的必要性和可行性,并对并网要注意的电磁环网问题及要做的工作进行了分析,为今后塔北电网的安全稳定运行提出了建设性意见,也为其他地区的电网并网提供借鉴。 相似文献
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江苏风电接入系统的若干问题 总被引:9,自引:1,他引:9
从江苏电网的现状、"十一五"规划出发,分析影响江苏电网以及沿海地区电网可承受最大风电容量的主要因素,对大型风电场接入系统的电压等级、含风电的江苏电网在运行管理中可能遇到的问题和应做的工作提出建议和意见. 相似文献
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This paper presents a general framework for identifying the optimum wind capacity to be integrated in a power system with interconnection lines. Wind generation is treated as negative demand, together with the load demand, which must be covered by the conventional power generation and the energy interchange with neighboring systems. Under the presumption that the time-varying wind and load together with the trading price with neighboring systems could be statistically modeled by specified probability distributions, a chance constrained programming (CCP) model is formulated to address the wind capacity planning problem. The objective is to maximize the yearly net profit of the entire power system subject to the operational constraints and the reliability requirement. Wind power curtailment and load shedding are allowed to improve the system flexibility but incur penalty costs. The optimization problem is solved using a hybrid intelligence algorithm incorporating Monte Carlo simulations, a neural network and a genetic algorithm. The feasibility of the proposed approach is verified by a case study on a given power system. 相似文献