当前查询到11条专利与查询词 "Tan Zhihai"相关,搜索用时0.187437秒!排序方式:
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申请号:202010052603.1 公开号:CN111199012A 主分类号:G06F17/11
摘要:【中文】本发明提出一种能源互联网潮流计算的热力网络节点模型及其计算方法,通过建立热力网络潮流节点模型,用热力节点的供水温度、回水温度、供水压力、回水压力作为网络状态量,用节点净注入流量为零、节点的注入能量和为零作为基础模型,实现热力潮流计算。与现有技术相比,减少了计算最小热力网路回路环节、不采用流量作为状态量,方便与电网的节点模型组合,采用牛顿法等常规一体化潮流算法,收敛性好,编码容易,提高了潮流计算效率。 【EN】The invention provides a thermodynamic network node model for energy internet load flow calculation and a calculation method thereof. Compared with the prior art, the method has the advantages that the link of calculating the minimum thermodynamic network loop is reduced, the flow is not used as the state quantity, the method is convenient to combine with a node model of the power grid, a conventional integrated power flow algorithm such as a Newton method is adopted, the convergence is good, the coding is easy, and the power flow calculation efficiency is improved.
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申请号:201911172261.0 公开号:CN111030051A 主分类号:H02H7/045
摘要:【中文】本发明公开了一种差动保护系统及方法,其包括电磁式互感器、电子式互感器和差动保护装置,电磁式互感器和电子式互感器中的其中之一用于采集被保护设备的输入端电流,另一用于采集被保护设备的输出端电流;差动保护装置能够根据电磁式互感器、电子式互感器所采集的电流值计算被保护设备的差动电流,根据差动电流及电磁式互感器的饱和状态进行差动保护动作控制;本发明提供了一种差动保护系统及方法:增加了识别电磁式互感器饱和的一种判据,有效闭锁区外故障情况下引起的差动保护误动的情况。 【EN】The invention discloses a differential protection system and a differential protection method, which comprise an electromagnetic mutual inductor, an electronic mutual inductor and a differential protection device, wherein one of the electromagnetic mutual inductor and the electronic mutual inductor is used for collecting the current of the input end of a protected device, and the other one is used for collecting the current of the output end of the protected device; the differential protection device can calculate the differential current of the protected equipment according to the current values collected by the electromagnetic mutual inductor and the electronic mutual inductor, and control the differential protection action according to the differential current and the saturation state of the electromagnetic mutual inductor; the invention provides a differential protection system and a method thereof: a criterion for identifying the saturation of the electromagnetic mutual inductor is added, and the condition of differential protection misoperation caused by the condition of external fault is effectively locked.
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申请号:201911192629.X 公开号:CN110867968A 主分类号:H02J13/00
摘要:【中文】本公开涉及无线配网相量测量装置数据上送控制方法及装置,所述方法包括:确定所述D‑PMU对应的数据采集通道的数据采集特征数据;根据所述数据采集特征数据,计算得到当前计算周期所述数据采集通道的各测量点的动态采集频率;根据所述各测量点的动态采集频率,调整所述D‑PMU对于所述各测量点的数据上送频率。利用本公开各实施例,可以减少网络传输资源的浪费。 【EN】The disclosure relates to a data uploading control method and device for a phasor measurement device of a wireless distribution network, wherein the method comprises the following steps: determining data acquisition characteristic data of a data acquisition channel corresponding to the D-PMU; calculating to obtain the dynamic acquisition frequency of each measurement point of the data acquisition channel in the current calculation period according to the data acquisition characteristic data; and adjusting the data uploading frequency of the D-PMU to each measuring point according to the dynamic acquisition frequency of each measuring point. By utilizing the embodiments of the present disclosure, the waste of network transmission resources can be reduced.
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