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The state-of-the-art combination transformer recently developed by us, namely ZFS10-H combination transformer, has been provincially certified in 2000, inheriting the advantages of the American and European box transformers, with such structural features as being innovative , compact and unique, composed of wholly sealed power transformer, high-voltage ring net load switch, terminal load switch, backup fuse and inserted fuse, etc.

新型组合变压器——我公司新研制的ZFS10-H组合式变压器于2000年通过省级鉴定，该产品吸收了美式箱变和欧式箱变的技术优点，结构新颖、紧凑、独特、由全密封变压器、高压环网负荷开关、终端负荷开关，后备保护熔断器及插入式熔断器等组成。

After flow and transient stability calculating of the 330kV grid, we got the over-load and hazard lines set. Then we gained the redundant network needed to be built according to the increasing power supply and load in 2010. Adopting regradation step-by-step algorithm by which we can improve the calculation efficiency , we compared the validity of every line, deleted lines with low validity until no redundant line is in the network. At last we got the target network framework adopting the improved ant colony algorithm. Flow distribution, construction investment assessment and target framework of Gansu long-term planning all be considered, from the viewpoint of to be economic and reliability the feasibility of the improved ant colony algorithm is discussed.

在对2006年该网架结构进行了潮流计算与暂态稳定计算分析后，得出了系统的过负荷与危险线路集，并针对2010年新增的电源和负荷点确定了冗余的待建网架，然后利用逐步倒推法比较各待选线路在系统中的有效性，逐步去除有效性低的线路，直到网络中没有冗余线路为止，以此来以提高优化算法的计算效率，最后利用改进后的蚁群算法确定优化后的目标网架结构，并从潮流分布、建设投资估算等方面与甘肃电网远期规划中确定的目标网架进行了比较，从可靠性和经济性角度论证了改进蚁群算法在网架优化中的可行性。

On the base of practical transformer substation main connection, electric components and system circuit model are first formed in the paper; analyze vacuum arc characteristic and medium resume are analyzed, then, according to vacuum chamber physical process of switching AC arc, resume process are divided into three stages: sheath development, neutral particles diffusion and static characteristic, with that, calculating model of medium resume strength is erected and applied in the computing of vacuum circuit breaker interrupting transform overvoltage; In the paper, Saber software is used to simulate a whole switching process; As follows, overvoltage characteristic of vacuum circuit breaker switching no load and load transformers, kinds of influence factors are analyzed in detail; At last, vacuum circuit breaker switching capacitance group overvoltage formative causes and electrode refining for lessening reignition are discuss.

本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；在真空电弧的特点及间隙的介质恢复特性上，依据真空断路器灭弧室分断电弧的物理过程，将真空电弧熄灭后的恢复过程分为鞘层发展、中性粒子扩散和静态特性三个阶段，建立了相应的介质恢复强度的计算模型，应用到切除变压器操作过电压的计算中；采用Saber仿真软件模拟计算真空断路器切除变压器操作过电压；并分别对真空断路器切除空载及负载变压器操作过电压的特点与影响操作过电压的各种因素做了详细的分析；最后简要分析了真空断路器开断电容器组过电压的形成原因及为减少重燃的电极老炼措施。

In the paper,vacuum circuit breaker switchingtransformers process is simulated with Saber software and parameters are analyzed Theresults indicate that overvoltage peak value of switching no load transformers is not muchhigh,especially for switching load transformers.Yet,reignition overvoltage might doharm to transformer coils by cumulative effects for its surge steepness.The measures liesin setting parallel connection capacitance in practice working.

本文利用Saber仿真软件对真空断路器切除变压器的一个完整过程进行了仿真计算，并详细分析了各种参数对过电压的影响，结果表明，尽管实际中切除空载变压器过电压的幅值并不是很高，特别是带负载变压器的情况，但重燃过电压的陡度较大，对变压器绕组的纵绝缘有累积作用，在实际工作中应以并联电容为基础的限压装置。

On the base of practical transformer substation main connection,electriccomponents and system circuit model are first formed in the paper;analyze vacuum arccharacteristic and medium resume are analyzed,then,according to vacuum chamberphysical process of switching AC arc,resume process are divided into three stages:sheathdevelopment,neutral particles diffusion and static characteristic,with that,calculatingmodel of medium resume strength is erected and applied in the computing of vacuumcircuit breaker interrupting transform overvoltage;In the paper,Saber software is used tosimulate a whole switching process;As follows,overvoltage characteristic of vacuumcircuit breaker switching no load and load transformers,kinds of influence factors areanalyzed in detail;At last,vacuum circuit breaker switching capacitance groupovervoltage formative causes and electrode refining for lessening reignition are discuss.

本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；在真空电弧的特点及间隙的介质恢复特性上，依据真空断路器灭弧室分断电弧的物理过程，将真空电弧熄灭后的恢复过程分为鞘层发展、中性粒子扩散和静态特性三个阶段，建立了相应的介质恢复强度的计算模型，应用到切除变压器作过电压的计算中；采用Saber仿真软件模拟计算真空断路器切除变压器作过电压；并分别对真空断路器切除空载及负载变压器作过电压的特点与影响作过电压的各种因素做了详细的分析；最后简要分析了真空断路器开断电容器组过电压的形成原因及为减少重燃的电极老炼措施。

On the base of practical transformer substation main connection,electriccomponents and system circuit model are first formed in the paper;analyze vacuum arccharacteristic and medium resume are analyzed,then,according to vacuum chamberphysical process of switching AC arc,resume process are divided into three stages:sheathdevelopment,neutral particles diffusion and static characteristic,with that,calculatingmodel of medium resume strength is erected and applied in the computing of vacuumcircuit breaker interrupting transform overvoltage;In the paper,Saber software is used tosimulate a whole switching process;As follows,overvoltage characteristic of vacuumcircuit breaker switching no load and load transformers,kinds of influence factors areanalyzed in detail;At last,vacuum circuit breaker switching capacitance groupovervoltage formative causes and electrode refining for lessening reignition are discuss.

本文针对中低压变电站的实际主接线建立各电气元件及系统的电路模型；在真空电弧的特点及间隙的介质恢复特性上，依据真空断路器灭弧室分断电弧的物理过程，将真空电弧熄灭后的恢复过程分为鞘层发展、中性粒子扩散和静态特性三个阶段，建立了相应的介质恢复强度的计算模型，应用到切除变压器操作过电压的计算中；采用Saber仿真软件模拟计算真空断路器切除变压器操作过电压；并分别对真空断路器切除空载及负载变压器操作过电压的特点与影响操作过电压的各种因素做了详细的分析；最后简要分析了真空断路器开断电容器组过电压的形成原因及为减少重燃的电极老炼措施。

Bugmentation — Dlouds give you a new option for handling peak load or anticipated spikes in demand for services. T你好s is a very attractive option for enterprises, but also potentially one of the most difficult use cases. Success is dependent on the statefulness of the application and the interdependence with other datasets that may need to be replicated and load-balanced across the two sites.

扩张— 云供给了一个新的选择来措置惩罚负载岑岭或暴发的服务需求这对企业来讲是一个很是有吸万有引力的选择，可是同样也躲藏着最棘手的施用案例乐成成立在&有状况的应用，和彼此倚赖的数值集可以容或被复制并且负载均衡的路程经过过程双侧&上

Bugmentation — Dlouds give you a new option for handling peak load or anticipated spikes in demand for services. Thellos is a very attractive option for enterprises, but also potentially one of the most difficult use cases. Success is dependent on the statefulness of the application and the interdependence with other datasets that may need to be replicated and load-balanced across the two sites.

扩张— 云供给了1个新的选择来处置惩罚负载岑岭或暴发的办事需求这对企业来讲是1个很是有魔力的选择，可是同样也潜藏着最棘手的施用案件的例子乐成建立在&有状况的应用，和彼此依赖的数值集可以容或被复制并且负载均衡的经由过程双侧&上

To control the base design of power machine using numeric,taking the blower as an example,the key problem affected by power machine load,base and subgrade-the off-center value between centroid of control load and poid of foundation subface was analyzed.The relationship of calculating maximum amplitude of machine foundation and permitting amplitude was discussed.

以风机为例，对动力机器荷载、基础和地基共同作用的关键问题—控制荷载重心与基础底面形心的偏心值进行分析，并对机器基础最大振幅的求解与允许振幅的关系进行了论述，以便对动力机器基础的设计能从数值上加以控制。

Because of sufficing request of load force change of simulation object and work mode, The method of paper could be widely applied to control-force load simulation system of flight simulator.

我国飞行模拟器的座舱设备仿真已处于成熟阶段，本文是在理论研究基础上的科研开发和创新。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。