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73 results about "Post evaluation" patented technology

Grid investment benefit evaluation method based on multiple indexes and multiple levels

The invention discloses a grid investment benefit evaluation method based on multiple indexes and multiple levels. The grid investment benefit evaluation method is technically characterized by comprising the following steps of: constructing a grid investment benefit evaluation system comprising a main grid frame, a distribution network sub unit, a dividing specialty and a component voltage level investment benefit index; carrying out simplified processing on the index in the grid investment benefit evaluation system; carrying out unitization processing on the index in the grid investment benefit evaluation system; carrying out index weight calculation on the index in the grid investment benefit evaluation system; and evaluating the investment benefit of each examination object by using a linear comprehensive marking method. According to the method, the grid investment benefit evaluation system is constructed from four levels such as the main grid frame, the distribution network sub unit, the dividing specialty and the component voltage level investment benefit index; the accuracy of the investment evaluation is improved; the comparing and the finding of the problems existing in the grid investment are facilitated; and the grid investment benefit evaluation method can not only be used for post evaluation of the grid investment benefit or used for providing an important decision reference for the grid construction investment direction for the coming year.
Owner:STATE GRID TIANJIN ELECTRIC POWER +1

Traffic survey data collection and analysis application system for road network and its working method

A highway network traffic investigation data acquisition and analysis application system is composed of a traffic dynamic information auto-acquisition unit and a monitoring unit, wherein the traffic dynamic information acquisition unit is connected with the monitoring unit in virtue of a data transmission network; the working method is divided into a highway network OD data generation unit, a highway network traffic demand analysis and prediction unit, a highway network traffic distribution and network evaluation unit, a highway network planning unit, a highway project feasibility research and post-evaluation unit and a highway network operation management unit. The highway network traffic investigation data acquisition and analysis application system has the advantages of: (1) real-time, accurate and objective acquisition of highway information; (2) displaying the acquired and analyzed traffic information in image form on GIS; (3) providing maintenance management decision and planning construction decision of highways with basic database and theory support; (4) proving the public with main data basis of travel and induction service; (5) comprehensively acquiring data, and effectively and rationally selecting the data information, thereby providing a scientific and standard traffic investigation report.
Owner:天津市国腾公路咨询监理有限公司

Hidden danger checking, governing and supervising method

The invention relates to a hidden danger checking, governing and supervising method, which mainly solves the problem of poor hidden danger checking, governing and supervising effect in the prior art. The hidden danger checking, governing and supervising method is adopted, a user do hidden danger checking, governing and supervising work through a login hidden danger checking, governing and supervising system; according to a general framework of the login hidden danger checking, governing and supervising system, from the application level, the login hidden danger checking, governing and supervising system comprises an enterprise level hidden danger checking, governing and supervising system, a headquarter business unit level hidden danger checking, governing and supervising system and a headquarter safety supervision authority level hidden danger checking, governing and supervising system; through the division in the management function aspect, the login hidden danger checking, governing and supervising system mainly comprises hidden danger checking, hidden danger reporting and approval, hidden danger precautionary measure making and implementation, hidden danger governing schedule, hidden danger acceptance inspection, hidden danger post-evaluation, hidden danger standing book and statistical statement. The technical scheme better solves the problems, and can be used in the hidden danger checking, governing and supervising.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method for monitoring safety status of foundation pit

ActiveCN101644065ARealize dynamic monitoring and evaluationRealize quantitative evaluationFoundation testingEvaluation resultSafety control
The invention relates to underground engineering construction, in particular to a method for monitoring safety status of a foundation pit. Monitoring points which are capable of mutually corroboratingare arranged on a same section of the foundation pit in the invention method to monitor and obtain monitoring values of each monitoring project when the foundation pit is constructed to the current working condition; the safety status of the foundation pit at present can be quantitatively measured by comparing the monitored data with a limit status; deformation and force condition of foundation pit in next step is obtained through prediction; the safety status of the foundation pit in the next step of construction is evaluated by the way of comparing with the limit status, thus realizing theprediction the of safety status of the foundation pit and transforming the safety status evaluation of the foundation pit from post-evaluation to pre-evaluation. The invention has the advantages thatdynamic monitoring evaluation of the safety status of the foundation pit is realized by replacing absolute evaluation with relative evaluation and combing the data evaluation result obtained by monitoring with evaluation result obtained by adopting prediction; the quantitative monitoring evaluation of the safety status of the foundation pit is realized and the specific risk points are confirmed; the safety status of the foundation pit in the current and in the next step of construction is predicted systematically; the invention has great significance to the safety control over the constructionof the foundation pit.
Owner:SHANGHAI URBAN CONSTRUCTION MUNICIPAL ENGINEERING (GROUP) CO LTD

A power market price difference contract electric quantity decomposition technology and a decomposition result comprehensive evaluation method

The invention relates to a power market price difference contract electric quantity decomposition technology and a decomposition result comprehensive evaluation method. The method comprises the stepsthat annual contract electric quantity is decomposed according to a corresponding annual typical output curve; Decomposing monthly decomposed electric quantity to days through annual monthly decomposition and cross correction in combination with days and electricity consumption of each type of days within a month; On the basis, the daily contract electric quantity is decomposed to each time period, the decomposed electric quantity deviation caused by the maintenance plan is corrected based on a cross correction algorithm, and a financial settlement delivery curve for authorizing the price difference contract electric quantity at each time period is formed; And finally, establishing a post-evaluation index system of contract electric quantity decomposition, and evaluating a decomposition result from four aspects of risk, fairness, economy and rationality. The new electric power market contract electric quantity decomposition method and the post-evaluation model provided by the inventioncan provide a reasonable settlement basis for two parties of electricity generation and purchase, evaluate the advantages and disadvantages of the contract electric quantity decomposition method, andrealize the coordinated operation of the contract market and the spot market.
Owner:浙江电力交易中心有限公司 +1

Photometric-network real-time-correction self-learning ARMA model photovoltaic power prediction method

ActiveCN103996073AOvercoming the defect of low ultra-short-term forecasting accuracyForecastingMaximum errorMonitoring system
The invention discloses a photometric-network real-time-correction self-learning ARMA model photovoltaic power prediction method which includes inputting data and obtaining an ARMA (autoregressive moving average model) parameter, that is, model training; inputting optical resource monitoring system data and operating monitoring system data, and correcting a start-up capacity in a real-time manner according to the operating monitoring data; establishing an ARMA model so as to obtain a photovoltaic-power super-short-term prediction result; introducing real-time photometric-station data to carry out real-time correction on the photovoltaic-power super-short-term prediction result; and carrying out post-evaluation on the real-time corrected prediction result and analyzing an error between a prediction value and an actual measurement value and carrying out the model training again if the prediction error is larger than an allowed maximum error. Through introduction of the real-time photometric-station data, real-time correction is carried out on the photovoltaic generation power super-short-term prediction result so that a defect, which exists in the prior ARMA technologies, that a photovoltaic-generation-power super-short-term prediction precision is low is overcome and an objective of high-precision photovoltaic-generation-power super-short-term prediction is achieved.
Owner:STATE GRID CORP OF CHINA +2

Post evaluation method for power grid project based on multilevel extension assessment method

The invention discloses a post-evaluation method for a power grid project based on a multi-level extension evaluation method, including S1 establishing an evaluation index system, S2 using an improved analytic hierarchy process and an entropy weight method to combine subjectively and objectively to determine the weight of the evaluation index, and S3 establishing Multi-level extension evaluation model; on the basis of clarifying the types of projects to be evaluated, the evaluation index system is optimized and adjusted so that it can comprehensively reflect the functional effects of substation construction projects; the combination of subjective and objective AHP and entropy weight method is introduced The calculation weight of the algorithm makes the determination of the index weight more reasonable; the multi-level extension evaluation method is used to study the post-evaluation of the function effect of the substation construction project. This method not only does not need to judge each index according to the expert experience. It can also find out the key factors that affect the quality of the evaluation results and the overall development trend of the project, reducing the influence of human subjective factors on the evaluation results, and making the evaluation results more scientific and reasonable.
Owner:国网江西省电力有限公司赣州供电分公司 +1

Post evaluation method of power distribution network energy-saving reconstruction project

The invention relates to a post evaluation method of a power distribution network energy-saving reconstruction project. The objective of the invention is to eliminate defects in the prior art. The method includes the following steps that: S1, a power distribution network energy-saving project post evaluation system is built; S2, a hierarchical evaluation analysis model is built; S3, the weights of indexes in various evaluation systems are acquired; and S4, an evaluation result can be obtained through model analysis. According to the post evaluation method of the invention adopted, in the post evaluation process of the power distribution network energy-saving reconstruction project, the content options of bottom-layer indexes are subdivided, so that index data can be standardized, and therefore, the accuracy of the evaluation results can be ensured; the characteristics of power distribution network energy-saving reconstruction, such as adaptability and coordination, are highlighted; and the power distribution network energy-saving project post evaluation system, the evaluation model, evaluation criteria, and the weights of the evaluation indexes are built and analyzed, and the current energy-saving reconstruction level of a power distribution network can be reflected quantitatively from a plurality of angles.
Owner:STATE GRID CORP OF CHINA +1

Quantitative analysis method for establishment scheme of anemometer tower

The invention discloses a quantitative analysis method for an establishment scheme of an anemometer tower in the technical field of a wind power technology. The method comprises the following steps of firstly, selecting the anemometer tower with analysis significance from an established wind power plant according to a wind energy resource situation, a wind measurement data time period and a position relation between the anemometer tower and a stand; then dividing the wind power plant into a plurality of cross sections on the basis of a prevailing wind direction and a vertical prevailing wind direction according to the position of the anemometer tower; then carrying out comparison analysis on actually measured data of the anemometer tower on different cross sections and power generation data of a wind power generator; and finally determining the representativeness of the anemometer tower under similar terrain conditions and providing a reference for other similar wind power plant sites with the representativeness as a reference standard. The method has the beneficial effects that the problem of post-evaluation of wind resources after a wind power plant project is put into production is well solved, representative analysis basis for the anemometer tower can be provided for a to-be-developed wind power plant in an adjacent and similar terrain region, a reference for establishment of a position of the anemometer tower is provided, and the method is good in practicability and application prospect.
Owner:POWERCHINA CHENGDU ENG

Post-evaluation method for electric energy substitute item

The embodiment of the invention provides a post-evaluation method for an electric energy substitute item. The method comprises the steps of S1, establishing an electric energy substitute item evaluation system, wherein the electric energy substitute item evaluation system comprises at least one of the subsystems: a construction process evaluation subsystem which is used for evaluating the whole construction process of the electric energy substitute item, a technical performance evaluation subsystem which is used for evaluating the performance of the electric energy substitute item, an economic benefit evaluation subsystem which is used for evaluating the economic benefit of the electric energy substitute item, a social benefit evaluation subsystem which is used for evaluating the social benefit of the electric energy substitute item and an environmental benefit evaluation subsystem which is used for evaluating the environmental benefit of the electric energy substitute item; S2, establishing a level index for each subsystem, wherein each subsystem at least comprises a first-level index, and each first-level index comprises N second-level indexes, and the N is equal to 0, 1, 2 and the like; and S3, evaluating the electric energy substitute item according to the level index and the electric energy substitute item evaluation system.
Owner:STATE GRID SHANDONG ELECTRIC POWER COMPANY RIZHAOPOWER SUPPLY +2

Ultra-short-term photovoltaic generation power prediction method based on self-learning composite data source

The invention discloses an ultra-short-term photovoltaic generation power prediction method based on a self-learning composite data source. The ultra-short-term photovoltaic generation power prediction method based on the self-learning composite data source comprises the steps that data are input to enable parameters of an autoregression moving average model to be obtained; input data required by photovoltaic generation power prediction are input into the autoregression moving average model determined according to the parameters of the autoregression moving average model, so that a prediction result is obtained, post-evaluation is conducted on the prediction result, namely the error between a predicted value and a measured value is analyzed, and order determination of the model and estimation of the parameters of the model are conducted again if a predicted error is larger than an allowable maximum error. Key information is provided for new energy power generation real-time scheduling, a new energy power generation day-ahead plan, a new energy power generation monthly plan, new energy power generation capability evaluation and wind curtailment power estimation by predicting the photovoltaic generation power generated during photovoltaic generation. The ultra-short-term photovoltaic generation power prediction accuracy is effectively improved due to the fact the composite data source is introduced, and thus the on-grid energy of new energy resources is effectively increased on the premise that safe, stable and economical operation of a power grid is guaranteed.
Owner:STATE GRID CORP OF CHINA +2
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