电网

It is required in these models that the revenge of trust transactions must be greater than that from strategic bid in electricity market, and some constraints such as revenges of trust transaction participants, power limitations of transmission lines, power balance of the whole net, quantities of trust t.

在这 2个模型中，要求委托交易的收益应大于在电力市场中策略性竞标的收益，同时考虑了委托交易公司收益、输电线路功率限制、整个电网的功率平衡和委托交易电量等因素的约束条件，给出了委托交易公司和受委托交易公司的成本函数。

In the end, the distribution network reliabilities considering voltage sags and protective relays or not are compared.

最后比较了计及电压暂降和保护性能前后的配电网可靠性指标变化。

The algorithm of the distribution network reliability calculation considering voltage sags and protective relays is proposed.

提出一种计及电压暂降和保护性能的配电网可靠性算法。

Knowing the relativity of the voltage sags between the lines in complex power system will help to

现代电网与负荷构成的变化使电压暂降问题成为热点。

And then, the frame of voltage stability on-line assessment and control is schemed.

按电力系统分层控制的原则，研究了主网和地区电网电压稳定控制方案。

Looped network stracture under sectionalized operation is the current development trend on distribution systems.

配电网采用环网结构、分段运行，是目前发展方向。

The principles of RVC and the basic functions of reclosers, sectionalizing switches and looped switches are discussed...

结合实例详细描述了这种方案的重合器、分段开关和联络开关的基本功能及系统的工作原理，深入论述了环状网以及网格状配电网的分段开关和联络开关的整定方法

In this paper, a model of network reconfiguration based on CMAC neural network is proposed.The feeder reconfiguration for loss minimization in distribution systems is realized by changing the status of sectionalizing and tie switches. However, there are many switches in a distribution system.

在满足各种运行约束条件下，以网损最小为目标的配电网重构问题是个典型的非线性整数组合优化问题，由于开关很多，很难用常规的数学模型直接建立负荷与网损最小时的开关状态之间的关系。

Using sectionalizing switches to divide feeder into sections,from the technical point of view,can reduce the outage time and area,and raise the automation level of the system.

串接分段开关将馈电线分段，在技术上可以减少故障时间，缩小故障范围，提高配电网自动化程度。

AbstractFor optimizing allocation of sectionalizing switch, and achieving the least total reliability cost in the case of satisfying the reliability of major users, this paper proposes an optimization method for feeder automation planning, in which genetic algorithm is used. In order to deal with complex tree-type structure of feeders, a smart reliability calculation method is developed.

摘要提出了一种馈线自动化规划模型，并采用遗传算法进行求解，以优化开关配置，使得在满足重要用户可靠性的前提下，可靠性总费用最校在配电网可靠性计算中，实现了一种非常灵活的可靠性算法，能够处理结构任意复杂的树型馈线。

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。