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申请号:201911231366.9 公开号:CN111046633A 主分类号:G06F40/151
摘要:【中文】本发明提供一种基于LSTM的电网一次调频数据预测方法及装置。本发明电网调度运行安全数据预测方法,包括:获取原始数据,所述原始数据为第一格式;将所述原始数据进行格式转换获得第二数据,所述第二数据为第二格式,所述第二格式不同于所述第一格式;对第二数据进行数据清洗,删除无用数据,获得第三数据,所述第三数据包括:时间、有功功率、直流外送、水电有功功率、火电有功功率;使用第一预测模型根据第三数据预测电网频率。本发明克服了现有技术中系统风险感知能力和预警能力缺失的问题,进一步提高了电网调度安全。 【EN】The invention provides a power grid primary frequency modulation data prediction method and device based on LSTM. The invention discloses a power grid dispatching operation safety data prediction method, which comprises the following steps: acquiring original data, wherein the original data is in a first format; carrying out format conversion on the original data to obtain second data, wherein the second data is in a second format, and the second format is different from the first format; performing data cleaning on the second data, deleting useless data, and obtaining third data, wherein the third data comprises: time, active power, direct current outgoing, hydroelectric active power and thermal power active power; and predicting the grid frequency from the third data using the first prediction model. The invention overcomes the problem of the lack of system risk perception capability and early warning capability in the prior art, and further improves the dispatching safety of the power grid.
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申请号:201911137023.6 公开号:CN110930188A 主分类号:G06Q30/02
摘要:【中文】一种考虑资源互补特性的新能源与火电打捆交易定价方法,首先,制定打捆外送交易的基本策略;然后建立省间风、光新能源与火电的月度打捆交易优化模型,以送端地区发电成本最小为目标函数,计及弃风、弃光成本,考虑电力平衡、火电机组爬坡约束、最小连续开停机时间约束、容量约束、新能源实际出力约束、弃风弃光约束和打捆比例约束等,优化求解得到最优新能源与火电打捆配置比例;基于最优打捆比例,对新能源与火电的交易电量利用电量配比法进行分解,采用新能源与火电上网成交价格的加权方法,得到打捆交易成交价格和落地交易价格,从而保证了受端落地价格最低。本发明方法可以统筹考虑风和光的资源互补特性、受端电网用电需要和价格承受能力,保障各发电主体利益同时,促进大规模新能源电力外送及消纳。 【EN】A new energy and thermal power bundling transaction pricing method considering resource complementary characteristics comprises the steps of firstly, making a basic strategy of bundling outgoing transaction; then, a monthly bundling transaction optimization model of wind, light and thermal power in province is established, the wind abandoning cost and the light abandoning cost are calculated by taking the minimum power generation cost of a sending end region as an objective function, and the optimal new energy and thermal power bundling configuration proportion is obtained by optimizing and solving the power balance, the ramp constraint of a thermal power unit, the minimum continuous start-stop time constraint, the capacity constraint, the actual output constraint of new energy, the light abandoning constraint of wind abandoning, the bundling proportion constraint and the like; and decomposing the transaction electric quantity of the new energy and the thermal power by using an electric quantity matching method based on the optimal bundling proportion, and obtaining a bundling transaction price and a landing transaction price by adopting a weighting method of the new energy and the thermal power internet transaction price, thereby ensuring that the receiving end landing price is the lowest. The method can comprehensively consider the resource complementary characteristics of wind and light, the power utilization requirement and the price bearing capacity of the receiving-end power grid, ensure the benefits of each power generation main body and promote the outward delivery and the absorption of large-scale new energy power.
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申请号:201911127939.3 公开号:CN110866646A 主分类号:G06Q10/04
摘要:【中文】本发明公开了一种电力系统安全校核方法,通过获取所有电厂的基础数据,在不同场景下对新能源发电量进行预测,得到不同新能源场景下预期发电量和交易电量的完成偏差,通过判断完成偏差是否符合预设的标准,实现对中长期安全校核的概率化分析。相较于传统确定型校核方法,该方法能够更全面的考虑新能源预测不准对安全校核的影响,更适应当前新能源高占比电网的中长期安全校核需求。 【EN】The invention discloses a safety checking method for an electric power system, which is characterized in that basic data of all power plants are obtained, the generated energy of new energy is predicted under different scenes to obtain the completion deviation of expected generated energy and transaction electric quantity under different new energy scenes, and the probabilistic analysis of medium-term and long-term safety checking is realized by judging whether the completion deviation meets the preset standard or not. Compared with the traditional deterministic verification method, the method can more comprehensively consider the influence of the new energy prediction on the safety verification, and is more suitable for the medium-and-long-term safety verification requirements of the current new energy high-occupancy power grid.
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申请号:201910911200.5 公开号:CN110855365A 主分类号:H04B10/25
摘要:【中文】本发明公开了一种无中继光纤传输系统,包括:发送机、接收机以及连接发送机和接收机的传输链路,发送机包括激光器、第一偏振分束器、IQ调制器、偏振合束器;所述传输链路包括光纤、第一光耦合器、第二光耦合器、前向拉曼泵浦、后向拉曼泵浦;接收机,包括第二偏振分束器、第三光耦合器、第四光耦合器、第一光电探测器、第二光电探测器、90°偏振旋转器、90°光学混频器、第一平衡探测器、第二平衡探测器以及信号处理模块。本发明公开的无中继光纤传输系统结构简单、建设成本低,但却有不错的传输性能,能满足一些特定场合的应用。本发明还公开了一种无中继光纤传输方法。 【EN】The invention discloses a non-relay optical fiber transmission system, comprising: the system comprises a transmitter, a receiver and a transmission link for connecting the transmitter and the receiver, wherein the transmitter comprises a laser, a first polarization beam splitter, an IQ modulator and a polarization beam combiner; the transmission link comprises an optical fiber, a first optical coupler, a second optical coupler, a forward Raman pump and a backward Raman pump; the receiver comprises a second polarization beam splitter, a third optical coupler, a fourth optical coupler, a first photoelectric detector, a second photoelectric detector, a 90-degree polarization rotator, a 90-degree optical mixer, a first balanced detector, a second balanced detector and a signal processing module. The unrepeatered optical fiber transmission system disclosed by the invention has the advantages of simple structure and low construction cost, but has good transmission performance, and can meet the application requirements of certain specific occasions. The invention also discloses a relay-free optical fiber transmission method.
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申请号:201911354869.5 公开号:CN111209535A 主分类号:G06F17/18
摘要:【中文】本发明公开了一种电力设备相继故障风险识别方法及系统,对电网运行外部环境、电力设备本体状态信息进行甄别和提取,获得表征电网运行风险的关键数据;利用所述关键数据构建上述电力设备本体状态信息异常时的设备故障的概率分布模型;利用随机过程数学理论,结合设备故障的概率分布模型,将设备故障概率转化为设备间相继故障时间间隔的概率分布;利用所述设备间相继故障时间间隔的概率分布,确定给定置信度下的相继故障时间间隔。优点:从随机过程的角度对该问题进行了建模,对相应的划分标准进行了明确;更好地为不同阶段故障的动态控制决策提供可靠依据;能够在实际中的合理运用,普适性和实用性好,具有较高的工程应用价值。 【EN】The invention discloses a method and a system for identifying successive fault risks of power equipment, wherein the method comprises the steps of screening and extracting the external environment of power grid operation and the state information of a power equipment body to obtain key data representing the power grid operation risk; constructing a probability distribution model of equipment faults when the state information of the power equipment body is abnormal by using the key data; converting the equipment fault probability into the probability distribution of the time interval of successive faults between equipment by utilizing a random process mathematical theory and combining a probability distribution model of the equipment fault; determining successive fault time intervals at a given confidence level using the probability distribution of successive fault time intervals between the devices. The advantages are that: modeling the problem from the perspective of a random process, and defining a corresponding division standard; the method can better provide reliable basis for the dynamic control decision of the faults in different stages; the method can be reasonably applied in practice, has good universality and practicability, and has higher engineering application value.
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申请号:201911058411.5 公开号:CN111126749A 主分类号:G06Q10/06
摘要:【中文】本发明公开了电力系统调度技术领域的一种区域电网主控区常规电厂发电计划编制方法,旨在解决现有技术中主控区与分控区联合电厂计划编制存在的矛盾,并提出如何与辅助服务市场出清结果相结合的技术问题。获取区域电网主控区常规电厂发电计划编制所需基础数据;计算水电厂的电厂计划曲线;计算火电厂的电厂计划曲线;基于主控区水电发电预计划和主控区火电发电预计划获取区域省间辅助服务市场的出清结果,并根据出清结果形成区域电网主控区常规电厂发电计划。解决了主分控区计划协调计划编制的矛盾,同时考虑辅助服务市场出清结果,保证了新能源消纳的最大化。 【EN】The invention discloses a conventional power plant power generation planning method for a regional power grid main control area in the technical field of power system scheduling, and aims to solve the contradiction existing in the power plant planning combining the main control area and a sub-control area in the prior art and the technical problem of how to combine the result of clearing of an auxiliary service market. Acquiring basic data required by conventional power plant power generation planning in a regional power grid master control area; calculating a power plant planning curve of the hydraulic power plant; calculating a power plant planning curve of the thermal power plant; and acquiring clear results of the auxiliary service market among the regional provinces based on the main control region hydroelectric power generation preplanning and the main control region thermal power generation preplanning, and forming a conventional power plant power generation plan of the main control region of the regional power grid according to the clear results. The method solves the contradiction of planning and coordination plans of the main control division, simultaneously considers the clearing result of the auxiliary service market, and ensures the maximization of new energy consumption.
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申请号:201911356268.8 公开号:CN111146779A 主分类号:H02J3/00
摘要:【中文】本发明公开了一种电力设备相继故障的大电网柔性安全控制方法及系统,对电网运行外部环境、电力设备本体状态信息进行甄别和提取,获得表征电网运行风险的关键数据;根据获取的关键数据,利用电力系统相继故障过程识别方法,确定电力设备相继故障过程的可信估计;根据电力设备相继故障过程的可信估计的结果,确定电力设备相继故障过程的每个故障阶段,针对每个故障阶段,进行电网稳定性的量化评估,确定相继故障序列的主动控制时序;利用所述主动控制时序柔性进行主动控制策略。优点:本发明对故障序列中每个阶段进行评估分析、决策控制措施及相应的控制时序,更符合实际电力系统故障演变特点。 【EN】The invention discloses a large power grid flexible safety control method and system for sequential faults of power equipment, which are used for discriminating and extracting the external environment of power grid operation and the state information of a power equipment body to obtain key data representing the power grid operation risk; according to the acquired key data, determining a credible estimation of the successive fault process of the power equipment by using a successive fault process identification method of the power system; according to the result of the credible estimation of the successive fault process of the power equipment, determining each fault stage of the successive fault process of the power equipment, carrying out quantitative evaluation on the stability of the power grid aiming at each fault stage, and determining the active control time sequence of the successive fault sequence; and flexibly performing an active control strategy by utilizing the active control time sequence. The advantages are that: the method carries out evaluation analysis, decision control measures and corresponding control time sequence on each stage in the fault sequence, and better accords with the fault evolution characteristics of the actual power system.
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