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According to the requirement of power supply company, the authors propose a concept of weekly market by which the impact of price elasticity matrix of demand side on power purchase decision-making under time-of-use price is led into the optimization of power supply company's power purchase from weekly market, and a multi-objective stochastic optimization model for power purchase from weekly market in which the price elasticity matrix of demand side and risk are considered.

根据供电公司购售电业务的工作需要提出了周市场的概念，首次将分时电价下需求侧电量电价弹性矩阵对购电决策的影响引入供电公司周市场购电优化中，并建立了计及需求侧E矩阵与风险的周市场购电多目标随机优化模型。

Based on graphic technique of GIS, it forms the platform for electric power system software, so that the operation and organization of equipment can be more intuitionist, and the net analysis program of electric power system can be more automatic and precise; At the aspect of power loss calculation, we can get active power and reactive power loss separately, or get each kind of element's attribute, loss, and etc.

它以地理信息系统的图形化技术为基础，为电力系统软件架设图形化平台，使设备的操作、管理更加直观，使电力系统的网络拓扑分析程序更加准确和自动化；在线损计算方面，可以从计算结果中分别统计有功损耗和无功损耗，也可以方便的在配网图上对各种元件进行属性查询，损耗查询等。

For increasing the electric power quality of power system,a power quality management system based on electric power Wide-area Net is established,which is a classified and destributed management system,divided into three layers,that is terminal layer;local net power quality data management system;and central data management system,the WAN is used as a communication medium between layers.

摘 要：为了提高电力系统供电的电能质量，江苏电网已建立了一套网络型电能质量管理系统。该系统是一个分层、分布管理系统，系统分成三层，即监测终端、地区电网电能质量数据管理系统和中心数据管理系统，以广域网为层间通信介质。

In the design of the power supply, the main circuit topology frame uses half-bridge series resonant switching and parallel load connection, in which, an IGBT is adopted as the power switches, and features high operation frequency, high output power and fast response. In addition, the IGBT in the switch mode power supply has no hard turn-on or turn –off situation in transition, thus the disturbance to the power system is avoided.

相应的激光电源采用半桥软开关技术，串联谐振并联输出，IGBT 为主控制元件，实现了高频工作、高功率多路输出，响应快速；脉冲模式工作时避免了开关管的硬开关，减小了高次谐波对电网的干扰；无需镇流电阻也可实现气体稳定放电等特性。

In the design of the power supply, the main circuit topology frame uses full-bridge series resonant switching and parallel load connection, in which, four MOSFETs are adopted as the power switches, and by four pulses which UC3879 produces, high frequency operation and fast response are realized. In addition, the MOSFET in the switching power supply has no hard turn-on or turn-off situation in transition, thus the disturbance to the power system is avoided. Especially,by the use of high frequency transformer, PQ50/50, the switching power system can provide the steady discharge current without any amperite.

此开关电源采用全桥软开关技术、串联谐振并联输出，四个MOSFET管为主控制开关元件，通过脉冲产生电路UC3879产生的四路相关脉冲实现了高频交替开关，同时能快速响应输出的各种变化；避免了开关管的硬开关，提高了转换效率，另外通过采用高频变压器PQ50/50隔离了原副边，减小了高次谐波对电网干扰；无需镇流电阻也可实现气体稳定放电。

Buck and Boost topology switching power conversion circuits as the core of this system, ultra low power MSP430F1222 microcontroller-based controller, microcontroller produced by the PWM pulse width modulation signals, respectively, two-way control switch voltage conversion circuit the turn-on and turn-off in order to achieve the above two kinds of topology switching power conversion circuit, and then to draw power from the flow of electrical energy has been filled into the rechargeable battery, and using microcontroller A / D input voltage implementation of the monitoring, according to the input voltage switching buck - circuit at a lower cost to achieve a highly efficient energy transfer, and the circuit is simple, the parameter to determine easy, self-low power consumption,to achieve full-featured.

本系统以Buck降压和Boost升压拓扑结构开关电源变换电路为核心，以超低功耗单片机MSP430F1222为主控器，由单片机产生PWM脉宽调制信号，分别控制两路电压变换电路中开关管的导通与关断从而实现以上两种拓扑结构开关电源变换电路，进而从一直流电源中吸取电能充入可充电电池，并利用单片机A/D对输入电压实施监测，根据输入电压切换升降压电路，以较低的成本实现了高效率的电能转移，并且电路简单、参数确定容易，自身功耗低，实现功能完整。

As the junction of transimmting and distributing power, the power transformor is at the core of power network, so its reliability works on power energic quality for amoutful consumers, and the safety of power system even.

电力变压器是传输、分配电能的枢纽，是电力网的核心元件，其可靠运行不仅关系到广大用户的电能质量，也关系到整个系统的安全程度。

Through the static analysis, we think that traditional power is a protogenetic power; Tibetan Buddhism is a peculiar religion form that Indian Buddhism blended into the indigenous culture of Tibetan, it has doctrine, sandhana, ceremony and so on, and forms the religion power of worshipping living Buddha as base. The state power forms in the patriarchal clan system society, but it is thought political coercive power, even violence in the XunHua Tibetan area.

通过静态的分析，我们认为传统部落权力依靠循化藏区内对传统部落制度的文化价值认同的惯性得以维持和延续，是一种原生的权力形态；藏传佛教是印度佛教融入到藏族本土文化之中形成的一种独特的宗教形态，具有教义、修行到仪轨等一整套神秘主义的色彩和强化宗教认同的神圣化的意识形态，由此形成了以活佛崇拜为基础的宗教权力；王朝国家权力形成于以汉族为主体的宗法社会之中，它的强制力的一面依靠传统的宗法制度而被塑造成具有神权色彩的政治权威，然而在循化藏区由于文化认同的关系，王朝国家的政治权威被还原为政治强制力乃至于暴力。

Compared to the traditional power,the wind power can be taken as widely-distributed,clean and sustainable energy which gets rid of the dependence on nonrenewable fossil energy and defuses the fuel cost risk of normal power so as to ensure the cost stability of power generation,which basically solves the environmental cost of discharge of sulfur,dust and carbon caused by the normal power.

与传统能源相比，风能作为一种在全球范围内广泛分布的清洁、永续能源，其有效利用不仅可以摆脱对不可再生的化石能源的依赖，化解常规电力的燃料价格风险，保证发电成本的稳定，而且可以从根本上解决常规能源发电所带来的硫、粉尘、碳排放等环境成本问题。

Company's products mainly include two parts: i power far for the power supply, communication power, military power supply, custom power supply and other kinds of non-standard; ii battery maintenance battery internal resistance tester Products, a variety of battery capacity and so on-line monitor.

公司产品主要包括两部分：㈠电源远供电源、通信电源、军用电源、各种非标定制电源等；㈡蓄电池维护产品蓄电池内阻测试仪、各种容量的蓄电池在线监测仪等。

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。