电网

In the traditional environment,the services which maintain the secure and reliable operation of the grid include reserves,and these services were provided by the generators that owned by the grid;however,under the electric market condition,generators are unbundled fro...

传统电力工业环境下，维持系统安全可靠运行的备用服务由电网拥有的发电厂无偿提供；而在电力市场环境下，发电厂从电网公司分离出来，提供备用服务与否就成了发电厂自己的选择。

The design of the calculation example imitates the gradually unloosening process of price competition in Chinese electricity markets; the power network security, LMP, operation cost of power system and congestion cost of power system are analyzed and compared; and the effect of applying the LMP based congestion management theory to North China power grid is researched.

算例的设计模仿了中国电力市场改革逐步放开价格竞争的过程，对不同模式下的电网安全、节点电价、系统运行费用、系统阻塞费用进行了分析比较，研究了基于节点电价的阻塞管理理论在华北电网的应用效果。

This paper analyzes the characteristic of dispatching automation system of power network at length , and anatomizes the function and structure , status and development of it deeply .

本文详细地分析现有电网调度自动化系统的特点，对电网调度自动化的功能和结构，现状及其发展作了深入的分析。

The study centralizes the enhancement of reliability of load point in distribution network. Anddiscuss at subject of reliability of distribution system at Erdos.

从提高配电网负荷点供电可靠性的角度出发，对鄂尔多斯电网的供电可靠性问题进行了深入的研究。。

Load forecasting for power system is one of the important task of power utilities. Accurate load forecasting is helpful to planning generators starting and stopping in the interior of the electrical networks economically and reasonably, preserving the security and stability of power system, reducing the unnecessary circumvolving repertory capacity, making planning to overhaul the units in reason, ensuring the normal production and life of the society, effectively reducing the cost of generating electricity, increasing the economical and social benefit.

电力负荷预测是供电部门的重要工作之一，准确的负荷预测，可以经济合理地安排电网内部发电机的启停，保持电网运行的安全稳定性，减少不必要的旋转储备容量，合理安排机组检修计划，保证社会的正常生产和生活，有效地降低发电成本，提高经济效益和社会效益。

This paper introduces some foreign experience and studies the methods of transmission planning in a deregulated environment.

本文就电力工业改革后的电网扩容规划，介绍了国外一些国家的经验，对电力市场条件下的电网扩容规划进行了研究。

Studying the delaminating and districting operation from the point of program and over viewing the future development of Zhenjiang grid; putting forward the new districting operation program that is suitable for the development of Zhengjiang grid, and then giving the total principles in the future program.

提出了适合镇江电网发展的新的分区运行方案，并给出了镇江电网今后规划的总体原则。

When microgrid is operated in islanded mode, VSGs can be divided into non-frequency regulation units and frequency regulation units, the former can generate power and participates in primary frequency control according to dispatching to mitigate system frequency deviation due to disturbances; the latter can offer referential voltage of microgrid and use secondary frequency regulation to implement no-error frequency control.

微电网孤岛运行时，将虚拟同步发电机分为非调频发电单元和调频发电单元，前者既能按照功率调度指令发电，又能参与一次调频，缓解扰动情况下系统频率的波动，后者提供微电网参考电压，并利用二次调频实现频率的无差控制。

In this paper, focus the power network structure change, especial the power network islanding, an algorithm of dynamic power flow for islands in DTS system is proposed.

中文摘要：本文着眼于电网结构改变，特别是电网分岛的情况，设计了一套适用于DTS系统的多岛动态潮流算法。

The topology of this network must be analyzed and predigested in order t...

为便于进行计算，对实际网络进行拓扑分析和简化，并根据该配电网联络开关较少，网络层次较少等实际情况，提出了适合该配电网的重构策略，这种重构策略可以有效的避免&孤岛&的产生。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。