查询词典 power grid

As power market reformation carries on, power grid is in difficult status at the aspects of modulating peak effectively, operating safely and stably and supplying power reliably. Pumped storage power station has an important effect on safe, stable and economical operation of power grid. Research on benefit's comprehensive evaluation and operation mode of pumped storage power station is the avant-courier and difficulty in the domain of technology economy and management, which has important theory research value and practical significance.

随着我国电力市场改革，电网的调峰、安全稳定运行和可靠供电面临更为严峻的形势，抽水蓄能电站对电网安全、稳定和经济运行发挥着重要的作用，对抽水蓄能电站的效益综合评价和运营模式进行研究是目前国际上技术经济及管理研究的前沿问题之一，也是难点问题之一，具有重要的理论研究价值和实际意义。

The capacitance capacitors and inductors of power grid form parallel resonance circuit .It's frequency may be related to the existing power grid close to the harmonic frequencies, If there is power grid harmonic current sources, harmonic resonance caused by enlarged so that the voltage and current waveform distortion even more serious.

电容器的电容和电网的电感形成并联谐振回路，其频率可能与电网中存在的谐波频率接近，如果电网存在谐波电流源，谐振引起的谐波放大使电压和电流波形畸变更为严重。

The power grid sector will form six regional power grid companies and build up power grid enterprises in line with the modern enterprise system.

电网系统将组成6个区域性的电网公司，并用现代企业制度构建电网企业。

For the current situations that electrical power operation environment is more complex, the power organization reformconstantly, the electricity market is formed step by step, the current electrical equipment is outdate, and for the so many problems that lowenergy efficiency, poor power quality, less interaction between customers and power grid company, this paper defines the smart grid that is suited to China's power grid situation, and summarizes five features for the smart grid such as self-healing, interactive, optimization,compatibility, integration and the differences between smart grid and traditional grid, then introduces the four systems of smart grid and two foundations before building the smart grid, and finally concludes that smart grid is the inevitable result for the economical and technological development.

针对目前电力运行环境的日趋复杂、电力体制改革的不断前进、电力市场的逐步行成、现有的电力设备亟待更新、能源利用率低、电能质量差、用户与电网公司交互作用少等诸多问题，讨论了适合中国电网情况的智能电网的定义，总结出了智能电网自愈、互动、优化、兼容、集成五大特点，概括出了智能电网和传统电网的区别，并详细介绍了构成智能电网的四大体系和建立智能电网的两大基础，最后总结出智能电网是经济和技术发展的必然结果，我国应加快智能电网的研究发展。

Although the measures such as the simulation method with detailed generator model in which the dynamic behavior of exciting system is taken into account and installing power system stabilizers in main generators of Northeast Power Grid were adopted, it was still unable to effectively verify the reasonableness of parameter setting of PSS as well as its integrated matching result, and there was not enough scientific foundation for the selection of power grid model, especially load models. Moreover, it was hard to make accurate quantitative analysis, even though the qualitative analysis, on the close extent of selected models to actual operation of power grid.

虽然采取了计及励磁系统动态行为的详细发电机模型的仿真方法、在东北电网重要发电机组上加装电力系统稳定器(power system stabilizer，PSS)等措施，但PSS参数整定的合理性及整体匹配效果无法得到有效验证，选择电力系统模型尤其是负荷模型还缺乏足够科学依据，对所选模型与电网运行实际的贴近程度也很难做出准确的定量甚至定性的分析。

Because of the serious power supply and the problems in security and stability of the grid, it is very important to have an delaminating and districting operation in Zhenjiang's power grid, thus to prevent the hidden trouble that the high fault current would bring to the secure operation of the power grid, and also the power transmission can be assured at the same time.

在目前供电形式严峻、电网安全稳定问题突出的局面下，合理的对镇江电网进行分层分区运行，减小短路电流过大对电网安全运行带来的隐患将起到非常重要的作用，同时也为镇江电力外送提供保障。

In this paper a new contingency screening and ranking method is formed by combiningiterative filtering screening technology with continuation power flow analysis. Researchingpreventive control policy in reactive power compensation and load control when themargin of stability is serious, and reciprocal math model is given;through the exempleof IEEE39 typical system , the availability of the discussed methods in this dissertationwas approved. Aimed at the real grid, the contingency screening analysis and preventivecontrol policy based on Beijing power grid is discussed;the static voltage stabilityanalysis software based on figure draw of Beijing grid is realized, and the software hasthe junction to BPA .

论文提出了将迭代过滤筛选技术和连续潮流法相结合的事故筛选分析方法；从无功补偿控制和负荷控制两方面研究了系统裕度紧张时的预防控制策略，给出了相应的数学模型；采用IEEE39节点的标准系统算例，验证了本文提出的静态电压稳定事故筛选分析方法的可行性；针对实际电网讨论了基于北京电网的事故筛选分析和预防控制策略；通过与BPA接口实现了基于北京电网图形平台的静态电压稳定分析软件。

Basing on TI Corporation's DSP chips TMS320LF2407A as high-voltage protection system CPU in this article, AC analog which comes from high voltage power grid is converted to digital value which DSP can process by 14-bit A/D converter MAX125, monitoring the entire status of the high-voltage power grid in real-time, tripping off by controlling external relay quickly when abnormal operation happened, turn off the power grid to protect the power grid and other electrical equipment.

本文是基于TI公司的TMS320LF2407A型DSP芯片作为高压电继电保护系统的中央处理器。通过MAX125的14位A/D转换器采集高压电网中交流模拟量来转换为供DSP处理的数字量，从而进行数据分析处理，对整个高压电网的运行状况进行实时监控，当遇到不良运转时控制外部继电器迅速跳闸，切断电网，从而保护整个电网及其他用电设备。

Basing on TI Corporation's DSP chips TMS320LF2407A as high-voltage protection system CPU in this article, AC analog which comes from high voltage power grid is converted to digital value which DSP can process by 14-bit A/D converter MAX125, monitoring the entire status of the high-voltage power grid in real-time, tripping off by controlling external relay quickly when abnormal operation happened, turn off the power grid to protect the power grid and other electrical equipment.

本文是基于TI公司的TMS320LF2407A型DSP芯片作为高压电继电保护系统的中央处理器。

As the implementation of power generation separating from grid company and the establishment of power market, the internal and external environment, organization and management style of provincial power grid company have been changed greatly. The existing performance management system of provincial power grid company is not able to adapt to the demands of current business management and internal and external environment. As an important part of the managing and controlling system, performance management system has to be adjusted to adapt to the changes.

随着中国电力体制改革&厂网分开&的实施和电力市场的建立，省级电网企业的内外环境、组织结构及管理模式等都发生了较大的变化，原省级电力公司的绩效管理体系已不适应目前企业经营管理和内外环境的需要，作为管理控制系统重要组成部分的绩效管理系统也应随之进行适应性调整。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。