在电气化铁道牵引变电站中，装设无功补偿电容器和谐波滤波器是提高功率因数、改善电能质量的重要手段。
In electric railway traction substation, power capacitors and harmonic filters are the important devices for improving both the power factor and the power quality.
提高功率因数的一个重要办法就是无功补偿。另外通过远动监控、线损统计、线路改造等措施，也可以降低线损。
The reactive power compensation is a important means of enhancing power factor, otherwise, by remote control, loss statistic and line rebuilding also can reduce the line loss.
基于双向变流器技术的蓄电池充放电装置具有充电和放电功能，同时实现了网侧电流正弦化及单位功率因数，因而减少了对电网的谐波和无功污染。
The device for battery charge or discharge based on the technology of bidirectional converter can be used in charging or discharging battery, and realize sine wave of ac and unity power factor.
通过控制无功补偿量，调节中央变电所进线系统的功率因数，可达到减少经济损失的目的。
Regulating power factor of central substation by controlling reactive power amount can achieve the goal of reducing economical loss.
介绍采用同步电动机和并联电容器进行无功补偿等常用的无功功率补偿方法，以提高用电设备的功率因数。
The common methods of compensating reactive power are introduced to raise the power factor of electric equipment, such as those of using synchronous motors and parallel capacitors.
介绍了一种在静止无功功率补偿(SVC)控制中精确跟踪功率因数参据量的方法。
A new method of accurately setting reference values of power factor in the control of static var compensation (SVC) is introduced.
针对宝钢马迹山港原供电系统功率因数低下的问题，提出了一种新的无功补偿容量计算方法。
In the light of low power factor of the former power supply system of Majishan Port, Bao Steel, a new calculation method for wattless compensation capacity is put forward.
实行电动机无功就地补偿，对改变电动机低功率因数运行、减少线路损耗、提高变压器带载能力，有明显效果。
It has evident effect on low power factor working of motor, decreasing line loss and improving load ability of transformer.
由于补偿后的电流与电压在相位上接近，即补偿后的功率因数接近1，所以达到了动态无功功率补偿的目的。
The electric current and voltage are close to the phase after compensating, namely the power factor is close to 1, so the purpose of dynamic var compensation is achieved.
目前排水泵站系统普遍存在功率因数低、无功损耗大的情况。
Now there is lower powe factor and larger reactive power loss in the drain system.
线路普遍存在的功率因数偏低现象，一方面会增加电网无功电流，另一方面会使电气设备运行效率降低。
The line exits power factor lower phenomenon that may increase virtual current and decrease operation efficiency of equipment.
c谐波将引起流过无功(功率因数)补偿电容器的电流显著增加，造成电容器投入运行不久就损坏。
C will cause harmonic flow reactive (power factor) compensation capacitor current increase significantly, resulting capacitor will soon be put into operation in damage.
用软件系统计算出有功电能、视在电能、无功电能及功率因数等参数。
It can figure out active power, apparent energy, reactive energy and power factor parameter and so on in software system.
静止无功发生器可提高交流输电系统和配电系统的电压调节能力、系统稳定性和功率因数。
Static var generators are used to improve voltage regulation, stability, and power factor in ac transmission and distribution systems.
然后阐述了可控电抗器恒功率因数控制的无功补偿原理和实现方法，并进行了无功补偿实验。
The reactive power compensation principle and method of constant power factor control are studied theoretically . and experimentally.
文章主要介绍了静、动态补偿装置，其功率因数控制方式、无功功率（无功电流）控制方式、性能及应用场合。
This paper mainly introduces the power factor control method, reactive power(reactive current) control method, the performance and the applications of the dynamic & static compensation equipment.
高压输电线路在输送负荷功率的同时自身也消耗有功功率、吸收或输出无功功率，线路无功会对功率因数产生很大影响。
While transmitting the load power, the high-voltage transmission line consumes the active power of its own, and absorbs or outputs the reactive power, which affects the power factor significantly.
该互感器与PC机配合，可完成电力系统的谐波分析、鉴相、功率因数及有功、无功功率的分析计算。
And the transformer can carried out the analysis and calculation of harmonic, phase discrimination, power factor, active and reactive power together with PC.
自动补偿负荷无功功率，提高负荷功率因数。
Automatic compensation load reactive power, enhancing the load power factor.
针对电气化铁路变电所功率因数低，不能满足剧烈变化的牵引负荷对无功补偿要求的现状。
The power factor for the railway substation of the electrified railway is low and can not meet the conditions of severe tractive load to reactive compensation requirements.
在交流电网中，常常采用移相电容器补偿无功功率损耗的方法来提高网络的功率因数。
In ac power network, the way of phase-shifting capacitors to compensate reactive power loss is always adopted to raise network power factor.
当无功功率不平衡时，将会导致系统电压降低、电能质量下降、功率因数降低、线损增加等问题。
When reactive power is unbalance, it will cause some problems, such as lower voltage, worsen voltage quality, lower power factor and increase line loss.
电力系统中常需测量电压、电流、功率因数、有功功率、无功功率和视在功率等参数。
In an electric power system, the following parameters often need measuring: voltage, current, power factor, power, reactive power and apparent power.
工控机完成有功功率、无功功率以及功率因数的计算，并查询模糊控制表，给出控制量。
The host computer finishes the calculation of active power, reactive power and power factor, inquire fuzzy form of controlling , give and publish the controlling amount.
它不仅有效地提高无功电流的补偿质量，改善了供电系统的功率因数，而且并联电容的成本和投切频率都很低。
It improves the quality reactive current compensation effectively and the power factor highly with lower capacitor costing and switching frequency.
文中分析了影响电网功率因数的主要因素、低压电网无功补偿的常用方法及无功补偿的效益。
This article explains main factors to influence power factor in electrical network, common methods of reactive compensation in low voltage network, and the benefits of reactive compensation.
电力系统无功功率补偿不足会引起功率因数下降，而三相功率不平衡则会影响到用电设备的安全。
The power factor of power system will be decreased by under-compensation of reactive power and it is harmful for the devices of customers while the power in the three phases are unbalanced.
配电网中许多负荷功率因数低、波动大、变化快，传统的无功功率补偿装置很难起到理想的补偿效果。
Many load in distribution network has low power factor, fluctuates greatly, and changes fleetly. It is hard to achieve perfect compensation by traditional compensator.
无功补偿可以提高功率因数，变压器的经济运行可以最大限度地降低变压器的电能损耗，需量控制能够降低企业最大峰值负荷，降低生产成本。
It concludes that reactive compensation can increase power factor. Economical transformer operation can decrease energy loss. Power demand control can shed maximum peak load and lower productive cost.
无功补偿可以提高功率因数，变压器的经济运行可以最大限度地降低变压器的电能损耗，需量控制能够降低企业最大峰值负荷，降低生产成本。
It concludes that reactive compensation can increase power factor. Economical transformer operation can decrease energy loss. Power demand control can shed maximum peak load and lower productive cost.
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