The combined sections method overcomed the disadvantage of method only considering active or reactive load and improved the accuracy.
这种组合分段的方法克服了仅按照有功或无功分段的缺陷,提高了控制的准确性。
The methods of using reserve excitation device, transferring reactive load and dropping reactive load are put into service for detecting polarity in Gezhouba Hydropower Plant.
介绍了三种在线校验方法:备用励磁调节、无功负荷转移和甩无功负荷。这些工业试验方法曾在葛洲坝电厂成功使用。
Based on equivalent four-terminal networks of the longitudinal ultrasonic transformer, the resonant frequency equation and the amplitude magnification coefficient, with reactive load, are studied.
在负载为纯力抗的状况下,利用纵振型变幅杆等效四端网络,对频率方程和放大系数进行了研究。
The report said 60% of wildlife sites were now receiving a critical load of reactive nitrogen.
报告说60%的野生生物生境正在接收着大负荷的活性氮。
The result indicates that it is really feasible to adopt SVC to supply load dynamic reactive power to Jiangsu power grid for increasing voltage stability.
结果表明,现阶段采用SVC提供江苏电网扰动时负荷的动态无功支持,提高电压稳定性是一项可行的措施。
Using data of daily load prediction, theory analysis and calculate of reactive optimal control have been tried.
运用系统日负荷预测的数据,尝试性地进行无功优化控制的理论分析,并进行了实例计算。
The SAPF prototype can compensate harmonics and reactive well under varies load conditions, especially in the case of a distorted or unbalanced current of power supply.
并联型有源电力滤波器适用于多种负载条件下的谐波和无功补偿,尤其是能应用于电源电流畸变和不平衡条件下。
Due to the problem of reactive power compensation and harmonic pollution becoming serious in mine system, TCR reactive compensation system for load of mine DC elevator was designed.
由于煤矿系统无功补偿和谐波污染问题日趋严重,设计了以矿井直流提升机为负载的TCR无功补偿系统。
And introduced the simple model direct on reactive power to some load where the reactive power changed rapidly.
对一些无功变化迅速的负荷,则给出直接以无功功率做控制量的简单模型。
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.
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。
Automatic compensation load reactive power, enhancing the load power factor.
自动补偿负荷无功功率,提高负荷功率因数。
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.
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。
Firstly, the problem of reactive power constrains of generator at slack bus is studied, and a load margin algorithm of continuation power flow of reactive power constrain at slack bus is proposed.
首先,针对传统连续潮流算法在计算负荷裕度时遇到的平衡节点发电机无功约束问题进行了研究,提出了平衡节点无功约束的连续潮流负荷裕度算法。
The TBC compensates the fundamental reactive power and balances the load connected to the system.
TBC能补偿基波无功功率,平衡连接到系统的负载。
In the same way, we should consider the problem that reactive power surplus and over-voltage during the period of low-water and low load.
同样在枯水期轻负荷时,我们也要考虑到无功功率过剩,系统电压偏高的问题。
With the load growth of distribution system, reactive demand rises in order to increase power factor, voltage quality and transmission efficiency.
随着配电系统负荷日益增长,无功需求也相应增加,配电线路广泛采用并联电容器来满足无功需求。
Based on guaranteeing reactive power equilibrium of the system, only the voltage regulation assisted by on - load voltage regulation can make the deviation of voltage keep in allowable scope.
在保证系统中无功功率平衡的基础上,辅以有载调压等措施调整电压,才可使电压的偏移保持在允许范围内。
Several issues of power quality are presented, including harmonics, reactive power, three phase unbalance, large difference between peak load and vale load, voltage disturbance and so on.
第一章简单介绍了目前电网存在的几种问题,包括谐波问题、无功问题、三相不平衡问题、用电峰谷差过大的问题以及电压异常、断电问题等;
This changing "reactive" load causes the amp output level to change with frequency and changes in speaker impedance (a dynamic thing that changes as the speakers are driven harder).
这种变化的“反应”负荷导致功放输出水平的变化与频率变化,音箱阻抗(动态改变的内容作为扬声器驱动更难) 。
With the consideration of the varying load of power system, a complete mathematical representation of dynamic reactive power optimization and its calculation method are presented.
根据电力系统实际运行中负荷不断变化的情况,提出了动态无功优化问题的完整数学描述和计算方法。
The result of the load reactive power planning for a 66 nodes system shows that this method is feasible.
对某66节点系统的负荷节点的无功优化结果表明,该方法具有实用性。
This control principle can improve the control of power quality and effectively compensate the harmonic currents at load side, reactive power and negative sequence current.
该控制方法能改善系统电能质量的调节,有效地补偿负荷侧谐波电流、无功功率和负序电流。
This method considered the influence of wind speed and load on active power output and reactive power output of wind farms. The processing of the wind farm node reflects its character accurately.
该方法考虑了风速和负荷变化对风电场输出有功功率和无功功率的影响,对风电场节点的处理较准确地反映了其无功和电压特性。
The analysis indicates that large turbine-generator leading phase operation can improve the reactive power load distribution and the quality of power supply effectively.
试验分析表明,大机组发电机进相运行可有效改善电网无功潮流分布,提高电网供电质量。
When capacitors are used for reactive power compensation under harmonic load, the harmonic current would be seriously amplified, and the system would be taken into probably resonance.
在谐波负载下用电容器进行无功补偿时,会产生谐波电流严重放大、甚至引起谐振的现象。
When capacitors are used for reactive power compensation under harmonic load, the harmonic current would be seriously amplified, or even the system would be taken probably into resonance.
在谐波负载下用电容器进行无功补偿时,会产生谐波电流严重放大,甚至引起谐振的现象。
Based on these relations, a general control strategy for harmonic elimination, reactive power compensation and asymmetrical load balance can be devised.
在此基础上,就可以建立满足各种条件下系统的谐波抑制、无功补偿及不对称负载平衡衡量化的统一控制策略。
Through the single-dynamic load model dynamic reactive power compensation device can change the original system bifurcation point, increase the load limits and improve the system voltage stability.
通过对单机。动态负荷模型添加无功功率动态补偿装置,可以改变原系统的分岔点,增加了负荷极限,从而提高了系统电压稳定性。
Through the single-dynamic load model dynamic reactive power compensation device can change the original system bifurcation point, increase the load limits and improve the system voltage stability.
通过对单机。动态负荷模型添加无功功率动态补偿装置,可以改变原系统的分岔点,增加了负荷极限,从而提高了系统电压稳定性。
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