摘要：【中文】本发明属于数据隐私保护领域，涉及一种针对云外包数据的隐私保护决策树分类方法，包括以下步骤：第一步，CSP将原始决策树模型转换成二叉树，在二叉树上随机添加k个虚拟叶子节点，然后表示成多项式，最后将N发送给ESP和用户；第二步，用户利用收到的N将自己的查询向量分割，并把分割后的数据分别传输给CSP和ESP；第三步，CSP和ESP协同比较每一个树节点的阈值及其对应的查询向量数据，得到共享的比较结果；第四步，根据比较结果，CSP和ESP协同计算加入虚拟节点以后的决策树表示的多项式，将结果发送给用户；第五步，用户接收两个云发送的数据并相加，得到最终的分类标签。本发明的有益效果：用户的计算和通信开销最小；保护了决策树模型不被ESP和用户所获知。 【EN】The invention belongs to the field of data privacy protection, and relates to a privacy protection decision tree classification method for cloud outsourcing data, which comprises the following steps: step one, the CSP converts an original decision tree model into a binary tree, k virtual leaf nodes are randomly added to the binary tree, then the binary tree is expressed into a polynomial, and finally N is sent to an ESP and a user; secondly, the user divides the query vector by using the received N and transmits the divided data to the CSP and the ESP respectively; thirdly, the CSP and the ESP cooperatively compare the threshold value of each tree node and the corresponding query vector data to obtain a shared comparison result; fourthly, according to the comparison result, the CSP and the ESP cooperatively calculate a polynomial expressed by a decision tree after the CSP and the ESP are added into the virtual node, and the result is sent to the user; and fifthly, the user receives and adds the data sent by the two clouds to obtain the final classification label. The invention has the beneficial effects that: the calculation and communication overhead of the user is minimum; the decision tree model is protected from the knowledge of the ESP and the user.

摘要：【中文】一种提高远程遥控高压开关安全性的方法，步骤如下：对现有的104规约内容进行扩展，数据类型标示选用保留段中的ASDU55；调度员在主站端的监控系统选择需要遥控的高压开关，并发给主站端的前置系统；由前置系统根据接收到的信息，校验通过后从数据库中抽取相应的设备信息组装成遥控报文发给通信网关机；通信网关机解析遥控报文并寻找测控装置；通信网关机在接收到遥控报文后，将遥控报文中携带的开关调度编号校验信息进行解析，与测控装置的附加属性进行校验，将遥控信息转发到相应的测控装置，由测控装置执行操作命令。该方法能够对远程遥控高压开关过程中的多个环节进行校验，减少遥控过程中发生误操作的几率，保证遥控操作的正确性和安全性。 【EN】A method for improving the safety of a remote control high-voltage switch comprises the following steps: expanding the content of the existing 104 protocol, wherein the data type marks and selects ASDU55 in the reserved segment; a dispatcher selects a high-voltage switch needing remote control from a monitoring system at a main station end and sends the high-voltage switch to a front-end system at the main station end; the front-end system extracts corresponding equipment information from the database to assemble a remote control message to be sent to the communication gateway machine after the verification passes according to the received information; the communication gateway machine analyzes the remote control message and searches for a measurement and control device; after receiving the remote control message, the communication gateway machine analyzes the switch scheduling number verification information carried in the remote control message, verifies the switch scheduling number verification information with the additional attribute of the measurement and control device, forwards the remote control information to the corresponding measurement and control device, and executes the operation command by the measurement and control device. The method can be used for verifying a plurality of links in the process of remotely controlling the high-voltage switch, so that the probability of misoperation in the remote control process is reduced, and the correctness and the safety of remote control operation are ensured.

摘要：【中文】一种变压器分接头自动调节控制方法，包含如下步骤：将变压器铭牌参数输入到通信网关机内；调整时，根据母线电压的偏移量，设定一个母线电压值Ux，传送至厂站端的数据通信网关机中；通信网关机接收到调度监控系统下发的遥调指令后，更新采集到的变压器高压侧母线电压值U，以及主变低压侧和各配出线路的无功功率，并进行无功功率总和计算；通过通信网关机接收调度监控系统下发的母线电压设定值Ux后，与母线电压的当前值Ud进行对比：当通信网关机做出相应的升降档判断之后，向主变测控装置发出相应的遥控命令，由主变测控装置控制进行变压器分接头调整。该方法能够降低调度值班员调整变压器分接头时的工作量，提升整个调压过程的工作效率。 【EN】An automatic adjustment control method for a transformer tap comprises the following steps: inputting the parameter of a nameplate of the transformer into a communication gateway machine; during adjustment, a bus voltage value Ux is set according to the offset of the bus voltage and is transmitted to a data communication gateway machine at a plant station end; after the communication gateway machine receives a remote regulation instruction sent by a dispatching monitoring system, the collected voltage value U of a bus at the high-voltage side of the transformer and the reactive power of the low-voltage side of the main transformer and each distribution line are updated, and the total reactive power is calculated; after receiving a bus voltage set value Ux issued by a dispatching monitoring system through a communication gateway machine, comparing the bus voltage set value Ux with a current value Ud of the bus voltage: and after the communication gateway machine judges the corresponding lifting gear, sending a corresponding remote control command to the main transformer measurement and control device, and controlling by the main transformer measurement and control device to adjust the tap joint of the transformer. The method can reduce the workload of a dispatching attendant in adjusting the tap joint of the transformer and improve the working efficiency of the whole voltage adjusting process.

摘要：【中文】一种基于阈值的同异步交流混合采样方法，解决在电力系统出现故障时系统频率发生急剧变化后采样的数据不精确的问题。其步骤如下：确定两种采样方式切换的频率阈值；步骤1.1：采集电力实时数据，数据已知如下：[(t₁,y₁)、(t₂,y₂)、……、(t_i,y_i)、……(t_n,y_n)]，且上述采集点所对应的频率为(f₁,f₂,……f_i……f_n)，其中t_i,(i＝1至n)为按时序采集的时间，y_i,(i＝1～n)为采集数据的幅值；步骤1.2：对频率变化点进行验证；步骤2：确定采样方式；由步骤1.2.2.1‑步骤1.2.2.2可知t_i处频率越过阈值，故在t_i前面时间采集方式为同步采样方法，在t_i后面时间采集方式为异步采样方法；由步骤1.2.3.1‑步骤1.2.3.2可知t_p处频率回归阈值内，故在t_p前面时间采集方式为异步采样方法，在t_p后面时间采集方式为同步采样方法。 【EN】A threshold-based synchronous and asynchronous alternating current hybrid sampling method solves the problem that sampled data are inaccurate after system frequency changes sharply when a power system fails. The method comprises the following steps: determining a frequency threshold value for switching two sampling modes; step 1.1: collecting real-time data of the power, wherein the data are known as follows: [ (t)₁,y₁)、(t₂,y₂)、……、(t_i,y_i)、……(t_n,y_n)]And the frequency corresponding to the above-mentioned acquisition point is (f)₁,f₂,……f_i……f_n) Wherein t is_i(i-1 to n) are time points acquired in time series, y_i(i is 1 to n) is the amplitude of the acquired data; step 1.2: verifying the frequency change point; step 2: determining a sampling mode; from step 1.2.2.1 to step 1.2.2.2, t is known_iThe frequency crosses the threshold, so at t_iThe former time acquisition mode is a synchronous sampling method, at t_iThe later time acquisition mode is an asynchronous sampling method; from step 1.2.3.1 to step 1.2.3.2 finding t_pWithin a frequency regression threshold, so at t_pThe former time acquisition mode is an asynchronous sampling method, at t_pThe later time acquisition mode is a synchronous sampling method.

摘要：【中文】一种继电保护装置定值区远程切换控制方法，步骤如下：定义成标准定值描述文件；由调度端发起定值区切换功能，通过调度控制系统根据定值库中的定值清单分别生成当前定值区标准定值描述文件以及目标定值区标准定值描述文件，随后向通信网关机发送定值区切换命令，并发送两个标准文件；通信网关机召唤继电保护装置当前运行区定值以及目标定值区定值，并生成两个标准定值描述文件；然后与两个标准文件内容进行对比分析，判断是否满足切换条件；通信网关机采集继电保护装置的相关信息，判断是否满足切区条件；如果满足条件，则发出切区命令。本发明可以有效避免目标定值区内容不正确，提高远方切换定值区的安全性和可靠性，保证了电力系统的稳定。 【EN】A remote switching control method for a relay protection device constant value area comprises the following steps: defining into a standard fixed value description file; initiating a fixed value area switching function by a scheduling end, respectively generating a current fixed value area standard fixed value description file and a target fixed value area standard fixed value description file according to a fixed value list in a fixed value library through a scheduling control system, then sending a fixed value area switching command to a communication gateway machine, and sending two standard files; calling a current operation area fixed value and a target fixed value area fixed value of a relay protection device by the communication network shutdown machine, and generating two standard fixed value description files; then, comparing and analyzing the content of the two standard files, and judging whether the switching condition is met; the method comprises the steps that relevant information of a relay protection device is collected by a communication gateway machine, and whether a zone switching condition is met or not is judged; if the condition is satisfied, a switch command is issued. The invention can effectively avoid the incorrect content of the target fixed value area, improve the safety and reliability of the remote switching fixed value area and ensure the stability of the power system.