供电质量

• Zb transformer substation named european style cubical substation , which as a new type of electricity supplying equipment , with more advantages than traditional substation , because of small dimension , compact structure , and decreases the construction cost , at the same time , its installation is very easy , and the supply is very fast , and no need watching people , especially it is into the load center , which is very important for improving the supplying quality , decreasing the loss , improving supplying reliability and reforming electricity network
  Zb型箱式变电站谷称欧式箱变，作为一种新型供配电装置，它比传统土建变电站具有许多优越性。由于它体积小，占地面积小，结构紧凑，便于搬迁，因而大大缩短了基建的周期和占地面积，也减少了基建费用。同时，箱式变电站现场安装简单，供电迅速，设备维修简单，无须专人值守，特别是它可以深入负荷中心，对提高供电质量，减少电能损失，增强供电的可靠性以及对配电网络改造都是十分重要的。
• Then the paper uses the same typical four network operating conditions as the primary given conditions and when adding one set of the parallel capacitor bank , changing the 330 / 220kv transformer tap changer position step by step to change the transformer ration , through this study methods this paper found out all the optimized combination of the tap changer position and the amount of input reactive power , also obtained four sets of the 330kv , 220kv and hokv s / s bus voltage and the active and reactive power losses changing curves . through analyzing the optimized combination control curve and the network power flow , the paper generalizes the rules as following : the chief measure of coordinative control is inputting shunt reactor in chengxian s / s in winter time both in the planning year of 2010 & 2005 ; in summer time in planning year of 2010 the chief measure is to input proper shunt capacitor
  本研究通过分析所获得的最优综合控制组合曲线及电网潮流，总结出了如下规则：陇南电网在2005年及2010年冬大、以及2005年夏小运行方式下，综合控制应以成县变投入适量并联补偿电抗器作为主要措施；在2010年夏小运行方式下则投入适量并联补偿电容器作为主要措施，再辅助以选择合适的主变有载调压分接头来调节，达到控制网内无功潮流分布合理、各变电站母线电压在理想的范围内时电网有功损耗最小，从而也提高了电网安全运行水平及供电质量。
• The system ensures electric power quality by monitoring the electric power supplying and distributing from the power network . it monitors the air conditioning and the ups with other facilities to get the important operating status and facility parameters . the temperature and humidity is obtained and detected by the system in the 4 fields in the central control room
  通过对供配电监控了解市电的供电质量对机房内的空调ups等重要设备检测其状态与重要参数对机房内的温湿度分四个区域进行监测，将报警信息及时通知管理人员，对报警事件进行处理，同时，通过精确的漏水绳预防空调漏水确保机房的安全。
• In order to ensure the whole system operate economically , power department equip transformer with onload tap changer and shunt capacitors for most distribution substations , according to the operating condition , adjusting the position of transformer taps and capacitors can control the variation of voltage and reactive power exchanger of distribution substations and power system in certain extent
  为确保整个系统运行经济性，降低网损，电力部门在大多数变电站配置了有载调压变压器和并联补偿电容器组，根据运行情况适当调节变压器分接头的位置和投切并联补偿电容器组，可以降低电压变化和变电站与系统的无功交换控制在一定的范围内，确保供电质量和电网运行的经济性。
• This paper analyzes and compares between the external power source supply methods adopted in chinese subway system from six aspects , including the reliability and quality of power supply system , the working management and the project investment etc . . then the author comes to the conclusion that the concentrated method is better than the separate method in terms of external power source supply
  摘要针对我国目前地铁供电系统所采用的外部电源供电方式，从供电质量、供电可靠性、运营管理以及工程投资等六个方面进行了分析和比较，并得出集中供电方式优于分散供电方式的结论。
• Power - supply quality , environment protection , and electric de - regulation . meantime , geographic information system ( gis ) technology is developing rapidly . the gis data management method and its application in distribution network running and planning to meet the requirements of practical distribution should be studied and established , which have important academic and practical values to improve the reliability of distribution power - supply
  随着电力系统的发展，面对密织的电网、时刻变化的负荷信息、不断变迁的道路及建筑和人们对供电质量、环保、电力市场化体制改革等问题的日益关注，以及在地理信息系统（ geographicinformationsystem ， gis ）技术迅速发展的条件下，研究和建立适合于配电网实际应用的数据组织方法及在配网运行与规划中的应用，对于提高配网供电的可靠性具有重要的学术和实用意义。
• The temperature and humidity control system . the system consists of the local and administration stations and allows the center management being able to monitor the electric power supplying parameters , the electric power quality , the air conditioner running parameters and the ups running parameters in the local systems and facilities remotely using the administration station . the system divides the alert into levels , and uses different alert signals for different alarms
  在系统设计的过程中，根据系统安全性和管理的需要采用“分布式控制集中式管理”的设计模式，使区域结算中心机房管理人员，通过该系统平台即可方便地观看机房配电参数市电供电质量空调ups运行参数及报警状态等信息，同时对报警事件，按照不同的报警级别，以不同的报警方式通知机房管理人员，确保机房安全稳定高效的运行。
• The former present common requirements for designment and test of power - supply system , while the later present the performance indexes and testing methods of military power - supply system according to the particularity of it . this thesis compares the differences of these two kinds of standards , and summarizes several important features that can adequately reflect the quality of power - supply system by summing up and analyzing the contents of these standards
  本文比较分析了这两种标准的异同,对各标准中提出的性能指标进行比较和归纳,总结出能够充分反映电源供电质量的重要特性,并依照各类标准中提出的测试方法,结合测试项目的技术性能指标要求,提出了具体合理的系统测试方案。
• It is hence important to develop a kind of new intelligent protection system with wonderful performances used in flameproof switchgear which can not only improve the supply quality of underground hv distribution system but also perfect its protective properties , especially can prevent the underground from gas explosion and guarantee the operating safety for underground worker
  长期以来现场所使用的这种开关载流能力小、保护简单、故障率高，直接影响矿井供电的可靠性、安全性和连续性，因此研究高性能的6kv防爆开关综合保护系统对提高供电质量、保障人身安全，完善电网保护不仅具有重要的现实意义而且具有较高的经济价值。