| 1. | They both have the function to reduce the active power losses and improve nodes " voltage level
这两者都有降低网络有功损耗和提高网络节点电压的功能。 |
| 2. | The reactive power optimization of a radial distribution system can efficiently minimize the real power losses and improve voltage level of it , so that the yearly running charge will be reduced and the quality of power energy can be increased
配电网无功优化可以有效地降低网络有功损耗，提高系统的电压合格率，从而降低网络运行费用，提高供电质量。 |
| 3. | In at power supply system some transformers with special connection mode , such as scott transformer , anti - scott transformer , balance transformer and so on , are usual used . the voltage ratio is one of important parameters of transformer
采用斯科特变压器、平衡变压器等特殊接线方式变压器作为主变压器，能有效抑制负序电流，减少有功损耗和电压损失，提高牵引机车的过负载能力。 |
| 4. | On the condinary , much reactive capacity loaded would be bad , and net ' s voltage would be higher and its security would be influenced . with the needs of reducing line loss , to study the method of compensating reactive capacity has been an important task in power department
同理，如果就地投入补偿过大，多余的无功就要通过输配电线路向其他设备或区域输送，也会造成无功和有功损耗，使得用户的电压偏高，影响到电力网的安全经济运行。 |
| 5. | Capacitors dispatch of distribution system is an efficient method to network loss reduction and voltage improvement in the distribution system operation . it is an important component of distribution automation system ( das ) . the thesis mainly discusses reactive optimal control of distribution system
首先，研究了配电网无功优化控制的基本理论，讨论了配电网无功优化控制对电压和有功损耗的影响，提出配电馈线电容器优化控制对进一步降低配电网的有功损耗效果显著。 |
| 6. | In order to improve the behavior of transformer protection that is incomplete at present in distinguishing magnetizing inrush current from fault current , the paper puts forward a kind of new principle of transformer differential protection after analyzing the characteristic of magnetizing inrush and active power consume of transformers . this protection uses differential protection based on positive sequence active power as a criterion to discriminate internal faults from magnetizing inrush , and ratio restraint differential current protection as a signal to touch off the protection
针对当前电力系统中变压器保护由于励磁涌流鉴别理论不完善而导致的误动率相对较高的问题，论文在分析了变压器励磁涌流特性和有功损耗的基础上，提出了用变压器正序有功功率差动作为区别励磁涌流和故障电流的判据，并以成熟的比率制动差流保护作为内外部故障判据的变压器主保护。 |
| 7. | It is built using graphical technology of geographic information system and can be used as the graphical plate for power system software , making the operation and the management of the devices easy and intuitionist , and the analysis of network topology more automatic and accurate . in the aspect of the calculation of loss , this system calculates the loss of the active power and reactive power , forms the result in the database considering the differences of load - curves at every node , and allows the property or queries loss of the devices using graphic interface
它以地理信息系统( gis )的图形化技术为基础，为电力系统软件架设图形化平台，使设备的操作、管理更加直观，使电力系统的网络拓扑分析程序更加自动化、准确；在线损计算方面，考虑了各负荷节点负荷曲线的不同，可以从计算结果中分别统计有功损耗和无功损耗，也可以方便的在配网图上对各种元件进行属性查询，损耗查询等。 |
| 8. | Based on the theory of branch complex power , accurate formulas are derived to determine complex loss and flow components in power elements . to overcome the deficiencies of the traditional methods which transmission cost is allocated to users only based on active power flow and the existed using portion definitions which fail to take it into account that the interaction of active and reactive power , a new definition of the using portion of a power element by a particular generator or load is addressed
针对当前输电费用只按有功潮流进行分配，无法计及无功潮流交叉影响的缺陷和基于传统的电路理论无法结合有功无功潮流来定义元件使用份额的问题，本文又在复功率电源的支路功率分量理论基础之上，基于发电机和负荷的复功率在支路上引起的有功损耗分量，给出了发电机和负荷对元件使用份额的新定义。 |
| 9. | First the paper use the different four network operating condition as the primary given conditions and set the 330 / 220kv transformer tap changer position in the standard position , adding the paralleled capacitor bank sets one by one into the network to change the amount of the input reactive power , thus obtained four sets of the 330kv and 220kv bus voltage and the active and reactive power losses changing curves
进而研究了在每一确定并联补偿电容器组投入量条件下，随联变调压档位变化而产生出的一组并联补偿量、母线电压与损耗的变化曲线。进而选出了陇南电网在四种选定电网运行方式下、有功损耗最小条件下的最优综合控制组合曲线。 |
| 10. | Thus the reactive compensator can be located in the center of the distributed load in the area and make the best user of the compensator ' s capacity . the distance flowed by the reactive current is efficiently reduced and the active loss of power net goes down . two - stage control model is adopted in the optimized control technique of the system
该系统采用了测量点与补偿点与分开的方式，实现了区域性无功负荷监视，使无功补偿点可以安置在区域性分散负荷的中心部位，最大程度地利用了补偿容量，有效地缩短了无功电流传输的距离，降低了电网的有功损耗。 |
