Time data sequence on existing annual power consumption are dealt with by using principles of grey production, thus establishing GM(1, 1) grey model. Finally, a example is given.
并用灰色预测理论对该系统现有的年用电量时间数据序列进行处理,进而建立了GM(1,1)预测数学模型,最后提供了预测实例。
The claim power of the creditor has no restriction on number, sequence, or range.
债权人的请求权没有人数多少、顺序先后、范围大小的限制。
In this paper, development sequence of the latter two hydropower stations are studied based on current conditions of Baishuihe River Basin development and entire power market condition.
在白水江水电开发现状的基础上,结合整个电力市场,对两个电站开发的先后顺序进行了分析。
Symmetrical components method and its sequence network connection technique are conventional way on fault analysis of power system.
对称分量法及其序网联接技术是电力系统故障处理的传统方法。
The scheme includes the transverse differential protection, the directional relay action on negative sequence power of fault component and the incomplete differential protection.
该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。
Based on the sequence operation theory, a novel algorithm of probabilistic production simulation for a multi-area power system is proposed.
在序列运算理论基础上提出了一种用于多节点系统的随机生产模拟新算法。
Firstly, this paper considers the interaction among factors, which may have effect on the solar cell power output, the solar cell output power every hour is simulated in time sequence.
首先研究了各种影响太阳一次能源变化的因素,考虑因素之间的相互作用,采用按时间序贯仿真各小时太阳电池的出力。
The SVC can not only compensates the reactive power, but also dish the negative sequence current produced by the unbalance loads, which mostly depend on the control scheme.
静止无功补偿器(SVC)在补偿负荷无功的同时,还具备补偿三相负荷不平衡的能力,其关键在于SVC所采取的控制策略。
It mainly focuses on analysis and determining method of zero sequence power direction relay.
重点介绍零序功率方向继电器的分析及判定方法。
Based on the arithmetic of differential protection and simulation technique, this paper analyses the influence of the negative sequence to power system.
在结合微机差动保护装置算法及仿真建模的基础上,分析了负相序对差动保护的影响,并给出了相应的处理方法。
How to check the connection correctness of "l", "n", "s" lines is discussed on the shortcomings of on-load test for zero-sequence power direction component.
针对当前零序功率方向元件带负荷试验的不足之处,讨论了如何检查“L”、“N”及“S”线的接线正确性。
These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.
在三相系统中,以正序基波功率的积分作为计量标准,同样可以消除这两方面的不利影响。
It shows that DVR will inject small zero sequence component into the power system during compensation control even if there is no zero sequence circuit. This will influence the voltage on system side.
分析表明,即使系统不存在零序回路,DVR都会在补偿控制中向系统注入微小的零序分量,该零序分量会对无零序回路系统侧电压造成不良影响。
The paper proposes a novel shunt reactors turn-to-turn fault protection that is based on negative-sequence power direction theory.
提出了基于负序功率方向的并联电抗器匝间故障保护原理。
The harmful effects brought by reactive power, harmonics and negative sequence usually be evaluated on some sensitive power system nodes and be comprehensive solved in the traction power system.
无功、负序和谐波的不良影响需要在电力系统进行评估,在牵引供电系统中采取技术措施以期综合解决。
The power of the protector is supplied by itself from the ct. Based on thermal cumulate principles, a rapid and high precision inverse-time phase-sequence over-current protection is implemented.
该保护装置自具电源,基于热量累积原理实现快速高精度相电流反时限保护方法,实现对相电流和零序电流三段式保护。
A novel evaluation model of wind power credible capacity was presented based on sequence operation.
提出一种基于序列运算的风电可信容量计算方法。
The clock signal provided by Global Positioning System(GPS)is widely used in electric power system for relay protection, SOE (Sequence of Events), fault locating, synchronous sampling and so on.
GPS同步时钟信号已在电力系统的继电保护、事件顺序记录、故障测距、同步采样等诸多领域获得重要运用。
The conventional sequence system of the power plant is only to control the single equipment and the supporting facility or among the on-off signals of several equipment.
传统电厂的顺控系统只是控制单台设备及其辅助设备的启停或是几个设备之间开关量的控制。
A novel method of sag measurement based on aerial image sequence acquired from the helicopter used for the power line inspection was presented in this paper.
提出了一种基于直升机巡检时采集的航拍序列图像进行弧垂测量的新方法。
A novel method of sag measurement based on aerial image sequence acquired from the helicopter used for the power line inspection was presented in this paper.
提出了一种基于直升机巡检时采集的航拍序列图像进行弧垂测量的新方法。
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