摘要：【中文】本发明公开了一种基于调峰系数的特高压受端电网调峰能力充裕度判断方法。初始化特高压受端电网区外来电和各类发电机组的调峰率以及各时刻发电机组的开机容量；初始化特高压受端电网各时刻的负荷值和新能源发电功率；根据开机容量和调峰率，计算特高压受端电网各时刻的调峰系数，归一化处理调峰系数，再根据负荷值和新能源发电功率处理获得特高压受端电网的等效负荷值，进而计算各时刻的等效负荷系数；计算调峰系数与等效负荷系数的偏差，判断特高压受端电网是否满足调峰能力充裕度。本发明考虑了特高压受端电网区外来电和各类发电机组的作用和新能源发电功率的影响，能够更准确地对特高压受端电网调峰能力充裕度进行判断。 【EN】The invention discloses a method for judging the peak regulation capacity adequacy of an extra-high voltage receiving-end power grid based on peak regulation coefficients. Initializing peak regulation rates of external electricity in an extra-high voltage receiving end power grid area and various generator sets and starting capacity of the generator sets at all times; initializing a load value and new energy power generation power of an extra-high voltage receiving end power grid at each moment; calculating a peak regulation coefficient of the extra-high voltage receiving end power grid at each moment according to the starting capacity and the peak regulation rate, normalizing the peak regulation coefficient, processing according to the load value and the new energy power generation power to obtain an equivalent load value of the extra-high voltage receiving end power grid, and further calculating the equivalent load coefficient at each moment; and calculating the deviation of the peak regulation coefficient and the equivalent load coefficient, and judging whether the extra-high voltage receiving end power grid meets the peak regulation capacity adequacy. The method considers the effects of external electricity in the extra-high voltage receiving end power grid area and various generator sets and the influence of the generated power of the new energy, and can more accurately judge the peak regulation capacity adequacy of the extra-high voltage receiving end power grid.

摘要：【中文】本发明涉及一种新产品需求预测的方法，其特征在于：一种计算历史有售产品历史需求量与特征的相关性，根据相关性向量对历史有售产品进行聚类，新产品按照归类向量以某种归类机制归入某些类；用同一类里面，历史有售产品的需求量数据构建训练集，选取最近一段时间的训练数据用机器学习模型训练；分别用对应的类对新产品进行预测，将预测值组合后得到最终需求量预测值。通过本发明的新产品需求预测的方法，能够刻画出产品未来一月至两年的产品需求的动态演化，充分利用大数据背景下的全渠道、全链路信息，并能够很好的匹配机器学习的算法框架，所预测出的产品需求相对于传统方法有较高的准确度。 【EN】The invention relates to a new product demand forecasting method, which is characterized by comprising the following steps: the method comprises the steps of calculating the correlation between historical demand quantity and characteristics of historical sold products, clustering the historical sold products according to correlation vectors, and classifying new products into certain classes according to classification vectors by a certain classification mechanism; constructing a training set by using demand data of historical sold products in the same class, and selecting training data in the latest period of time to train by using a machine learning model; and predicting the new products by using the corresponding classes respectively, and combining the predicted values to obtain a final demand predicted value. The method for predicting the new product demand can depict the dynamic evolution of the product demand from one month to two years in the future, fully utilizes the full channel and full link information under the background of big data, can well match the algorithm framework of machine learning, and has higher accuracy compared with the traditional method.

摘要：【中文】本发明公开了一种多馈入新能源并网系统广义短路比的在线测量方法。将系统节点分为馈入端口节点、网络内节点和无穷大电网等值节点三类，在上述节点中采集获取馈入端口节点的电流和电压的离散时间点数据，进而获得电流差值矩阵与电压差值矩阵；电流差值矩阵与电压差值矩阵通过重排的克罗降阶导纳矩阵建立关系模型，再根据最小二乘法矩阵迭代解法求解重排矩阵，利用重排矩阵获得广义短路比。本发明的广义短路比实时测量算法，能够实现广义短路比的实时在线测量，同时基于最小二乘法的矩阵迭代算法使得计算结果对于测量噪声干扰有着较强的抵御能力。 【EN】The invention discloses an online measuring method for a generalized short-circuit ratio of a multi-feed-in new energy grid-connected system. Dividing system nodes into three types, namely feed-in port nodes, nodes in a network and equivalent nodes of an infinite power grid, acquiring discrete time point data of current and voltage of the feed-in port nodes from the nodes, and further acquiring a current difference matrix and a voltage difference matrix; and establishing a relation model by the current difference matrix and the voltage difference matrix through a rearranged Crohn reduced order admittance matrix, solving the rearrangement matrix according to a least square matrix iterative solution, and obtaining the generalized short-circuit ratio by using the rearrangement matrix. The generalized short-circuit ratio real-time measurement algorithm can realize real-time on-line measurement of the generalized short-circuit ratio, and meanwhile, the matrix iteration algorithm based on the least square method enables the calculation result to have strong resistance to measurement noise interference.

摘要：【中文】本发明涉及一种间断需求的预测方法，其特征在于：通过提取分类模型训练特征预测特征分类模型训练特征预测特征和聚类特征F₃；先对产品进行聚类，对每一个类别分别训练是否有需求的分类模型M₁；对每一个类别分别训练需求量的回归预测模型M₂；用M₁预测未来每个产品是否有需求；若预测存在需求，则用M₂预测具体的需求量；每隔一段时间，重复聚类、模型训练过程。该方法通过多任务进行分解，有助于提升模型的表征能力。 【EN】The invention relates to a method for predicting intermittent demands, which is characterized by comprising the following steps: training features by extracting classification modelsPredictive featuresClassification model training featuresPredictive featuresAnd clustering feature F₃(ii) a Firstly clustering products, and respectively training a classification model M whether each class has requirements₁(ii) a Training regression prediction model M of demand quantity for each category respectively₂(ii) a By M₁Predicting whether each product has a demand in the future; if there is a demand, then use M₂Predicting specific demand; and repeating the clustering and model training processes at intervals. The method is decomposed through multiple tasks, and the representation capability of the model is improved.

摘要：【中文】本发明公开了一种基于区块链的电动汽车充电分布式系统。本发明包括电动汽车、基于区块链架构的P2P充电桩网络以及电网；所述的电动汽车作为存储系统，储存电网多余的电量；所述充电桩网络可实现各电力系统之间实时共享电力需求信息以及实时价格，网络中的每个充电桩作为一个单独的节点，节点从电网获取需求信息与实时放电奖励价格并调度相应的电动汽车执行充放电行为，并根据电动汽车的充放电行为产生相应的交易记录并写入区块链中；所述电网是系统中的需求发布者，电网根据自身的状态，向充电桩网络发送实时需求信息与实时放电奖励价格，并调节电网自身系统的运转。本发明对电力系统系统朝着清洁化、高效化的方向发展，建立一个良好的电力生态网络。 【EN】The invention discloses a block chain-based electric vehicle charging distributed system. The system comprises an electric automobile, a P2P charging pile network based on a block chain architecture and a power grid; the electric automobile is used as a storage system for storing redundant electric quantity of a power grid; the charging pile network can realize real-time sharing of power demand information and real-time price among all power systems, each charging pile in the network is used as an independent node, the node acquires the demand information and the real-time discharge reward price from a power grid, schedules a corresponding electric automobile to execute charging and discharging behaviors, generates a corresponding transaction record according to the charging and discharging behaviors of the electric automobile and writes the transaction record into a block chain; the power grid is a demand publisher in the system, and the power grid sends real-time demand information and real-time discharge reward price to the charging pile network according to the state of the power grid and adjusts the operation of the system of the power grid. The invention develops the power system towards the direction of cleanness and high efficiency, and establishes a good power ecological network.

摘要：【中文】本发明公开了一种考虑土壤热湿耦合的直埋电缆载流量有限元计算方法，包括如下步骤：定义所敷设土壤深度、半宽，选择电缆类型、各部分几何大小、敷设回路数、排列方式、是否接触排列、各部分材料、埋设深度、环境参数、敷设土壤类型、材料、初始含水率、边界条件，设定初始迭代的电流、迭代精度和收敛因子，引入由MAXWELL方程组得到的热源项，结合土壤热湿耦合模型，得到载流量计算模型，设定网格大小，进行网格划分，并配置相应的求解器，最后求解计算缆芯的最高温度与持续工作时最高允许温度的绝对差值使其小于迭代精度。本发明的方法的优点是将传统农业中的热湿耦合模型结合到直埋电缆载流量计算上，实现了载流量的精确计算和动态计算。 【EN】The invention discloses a finite element calculation method for current-carrying capacity of a direct-buried cable considering soil heat-moisture coupling, which comprises the following steps: defining the depth and half width of laid soil, selecting the type of a cable, the geometric size of each part, the number of laid loops, the arrangement mode, whether the cable is in contact arrangement, the material of each part, the embedding depth, environmental parameters, the type of laid soil, the material, the initial moisture content and boundary conditions, setting the current, the iteration precision and the convergence factor of initial iteration, introducing a heat source item obtained by an MAXWELL equation system, obtaining a current-carrying capacity calculation model by combining a soil heat-moisture coupling model, setting the size of a grid, carrying out grid division, configuring a corresponding solver, and finally solving and calculating the absolute difference value of the highest temperature of a cable core and the highest allowable temperature during continuous working to enable the absolute difference value to be smaller than the iteration precision. The method has the advantages that the heat-moisture coupling model in the traditional agriculture is combined to the calculation of the current-carrying capacity of the direct-buried cable, so that the accurate calculation and the dynamic calculation of the current-carrying capacity are realized.

摘要：【中文】本发明公开了一种依据水平张力的输电导线找形方法，该方法步骤如下：根据两座输电塔挂线点的位置，利用悬链线公式计算出两塔间输电导线节点的初始位置；利用只受拉的非线性单元模拟输电导线，设置初始应变；加载重力荷载，对在重力条件下输电导线有限元模型进行找形分析；依据年平均运行水平张力和导线中间节点水平张力的差值，调整导线初始应变；然后重复进行找形计算，直到导线中间节点水平张力与年平均运行水平张力差值小于阈值，停止计算，完成输电导线重力条件下位置找形分析。本发明以输电导线模型为基础进行导线找形计算，迭代计算难度大幅降低，并且使用年平均运行张力为收敛依据进行迭代计算，计算结果更加准确，更加符合实际情况。 【EN】The invention discloses a transmission conductor shape-finding method based on horizontal tension, which comprises the following steps: calculating the initial position of a transmission conductor node between two towers by using a catenary formula according to the positions of the hanging line points of the two transmission towers; simulating a power transmission conductor by using a non-linear unit which is only pulled, and setting initial strain; loading a gravity load, and carrying out shape finding analysis on a transmission conductor finite element model under the gravity condition; adjusting the initial strain of the lead according to the difference value of the annual average running horizontal tension and the horizontal tension of the middle node of the lead; and then repeating the shape finding calculation until the difference value between the horizontal tension of the middle node of the conductor and the annual average running horizontal tension is smaller than a threshold value, stopping the calculation, and completing the position shape finding analysis of the power transmission conductor under the gravity condition. According to the invention, the shape finding calculation of the conductor is carried out on the basis of the power transmission conductor model, the iterative calculation difficulty is greatly reduced, the annual average running tension is used as a convergence basis for iterative calculation, the calculation result is more accurate, and the method is more suitable for actual conditions.

摘要：【中文】本发明公开了一种中低压电缆外表面与土壤接触热阻的测试装置及方法，是在圆筒结构内将液压膜、土壤和中低压电缆由外向内依次设置且紧密接触，并在上、下端面加设隔热层，营造出沿圆筒壁径向的一维稳态导热环境；液压膜将其外侧的油压传递给内侧的土壤，使土壤沿径向被压紧并与电缆均匀接触；电缆接通电源并达到稳态导热后，利用布置在土壤内部的多个温度传感器测量土壤内部不同半径位点的温度值，再按照现有方法测量出电缆缆芯的温度值；根据圆筒壁径向一维稳态导热模型，计算电缆外表面和土壤之间的接触热阻，同时计算土壤的热导率。 【EN】The invention discloses a device and a method for testing the thermal contact resistance between the outer surface of a medium and low voltage cable and soil, wherein a hydraulic membrane, the soil and the medium and low voltage cable are sequentially arranged from outside to inside in a cylinder structure and are tightly contacted, and heat insulation layers are additionally arranged on the upper end surface and the lower end surface to build a one-dimensional steady-state heat conduction environment along the radial direction of a cylinder wall; the hydraulic membrane transfers the oil pressure at the outer side to the soil at the inner side, so that the soil is compressed along the radial direction and is uniformly contacted with the cable; after the cable is connected with a power supply and reaches steady-state heat conduction, measuring temperature values of different radius points in the soil by using a plurality of temperature sensors arranged in the soil, and measuring the temperature value of a cable core of the cable according to the existing method; and calculating the thermal contact resistance between the outer surface of the cable and the soil according to the radial one-dimensional steady-state heat conduction model of the cylindrical wall, and meanwhile, calculating the thermal conductivity of the soil.

摘要：【中文】本发明公开了一种非侵入式的基于功耗分析的PST异常监测方法。该方法将电阻串入PST装置的供电模块与CPU模块之间，通过数据采集卡采集其电压降，并传入上位机进行功耗信息的处理，上位机根据采集到的功耗信息生成特征值样本进行RNN网络的训练，并根据训练好的RNN模型对实时样本进行监测。本发明无需修改PST的软硬件配置，相对电力系统是非侵入式的，且能够对PST进行实时的监控，在不需要获取PST遭到攻击时的异常样本情况下就能实现对攻击的监测。 【EN】The invention discloses a non-invasive PST anomaly monitoring method based on power consumption analysis. The method includes the steps that a resistor is connected between a power supply module and a CPU module of a PST device in series, voltage drop of the resistor is collected through a data collection card and transmitted to an upper computer to process power consumption information, the upper computer generates characteristic value samples according to the collected power consumption information to train an RNN network, and real-time samples are monitored according to a trained RNN model. The invention does not need to modify the software and hardware configuration of the PST, is non-invasive relative to the power system, can monitor the PST in real time, and can monitor the attack without acquiring abnormal samples when the PST is attacked.

摘要：【中文】本发明公开了一种配电系统进行不停电倒闸操作的判断方法。本发明利用倒闸瞬间合环点冲击电流与倒闸线路电流保护整定值的配合，当倒闸操作发生时，利用倒闸瞬间合环冲击电流与继电保护整定值相比较来判定能否进行不停电倒闸操作；当冲击电流小于继电保护整定值时，判定为倒闸操作可以进行，当冲击电流大于继电保护整定值时，就判定为不可进行不停电倒闸操作。本发明为配电网不停电倒闸操作能否进行提供判断依据，避免了不可靠的倒闸操作，提高了配电网系统供电可靠性。 【EN】The invention discloses a method for judging the switching operation of a power distribution system without power outage. According to the invention, by utilizing the matching of the switching instant closing point impact current and the switching line current protection setting value, when switching operation occurs, whether the switching operation can be carried out without power failure is judged by comparing the switching instant closing point impact current with the relay protection setting value; when the impact current is smaller than the relay protection setting value, the switching operation is judged to be possible, and when the impact current is larger than the relay protection setting value, the uninterrupted switching operation is judged to be impossible. The method provides a judgment basis for judging whether the power distribution network can be switched off or not without power outage, avoids unreliable switching operation and improves the power supply reliability of a power distribution network system.