160results about How to "Improve investment efficiency" patented technology

The invention discloses a coordinated planning method for a power distribution system and an electromobile charging network. The coordinated planning method comprises the following steps that first, a planning strategy of distributed charging piles based on node charging demands is put forward, and then a multi-objective optimization model of coordinated planning of the power distribution system and the electromobile charging network is established, wherein the objective of the model is that the sum of the investment cost and the system network loss is minimal, and the traffic flow intercepted and captured by quick charging stations is maximal. In the developed model, a traffic flow allocation model based on user balance is introduced to analyze the traffic flow intercepted and captured by the quick charging stations, and the number of devices of all the quick charging stations is allocated by the correlation theory of the queueing theory according to the rule that the average charging waiting time of vehicle owners is not beyond a certain threshold value at traffic rush hours. According to the method, a series of Pareto nondominated solutions can be obtained, planning personnel or investors can balance all the nondominated solutions according to practical engineering and select the most reasonable scheme, and therefore the investment efficiency is improved.

The invention relates to a multi-target differential grey wolf algorithm-based reactive power optimization method of a power distribution network. Photovoltaic and load time sequence fluctuation is considered, a DSTATCOM is introduced and used as a compensation connected to an active power distribution network, segmentation is performed by taking hour as a time segment, the dynamic reactive powerof the DSTATCOM is smoothly changed according to change of an equivalent load after photovoltaic and load, fluctuating according to a time sequence, connected to the power distribution network, and the active network loss and the voltage deviation are reduced to the maximum extent under the condition that the minimum reactive compensation capacity is output. In order to solve the problem of multiple targets in a reactive power optimization model, an original grey wolf algorithm is improved, variation and cross in a differential algorithm are introduced, and multiple targets are processed by rapid non-domination sequencing, congestion distance and fuzzy subjection function. By the multi-target differential grey wolf algorithm-based reactive power optimization method, the influence on systemnetwork loss and voltage after time sequence photovoltaic and load connected to the power distribution network is effectively solved; and with the adoption of the multi-target differential grey wolfalgorithm, the problem of multi-target non-linear reactive power optimization is processed, and the global and local searching capability is balanced.

The invention provides a network planning method and device. The method includes the following steps that: a plurality of evaluation dimensions used for reflecting the business situations of cells are determined, the index values of a current network of each cell under the evaluation dimensions are obtained; the value scores of each cell with respect to the evaluation dimensions are calculated according to the index values of the current network; the total value score of each cell are calculated according to the value scores of each cell with respect to the evaluation dimensions; the value attribute levels of each cell are identified according to the total value scores of each cell; and the network coverage strategies of a region where the cells are located is determined according to the value attribute levels of each cell. With the method and device provided by the invention adopted, the value of a target area can be effectively identified, limited resources are put into an area which can most possibly generate benefits, and an effective basis can be provided for the accurate construction of a network.

The invention provides a construction area distribution network planning method and system. The method comprises the following steps of: (1), carrying out status analysis; (2) giving a power demand prediction result of a planning area by adoption of bottom-to-top point load prediction and space load prediction combined method; (3) carrying out distribution transform platform planning; (4) carrying out medium-voltage line planning; (5) carrying out project booking; (6) carrying out investment estimation; and (7) giving suggestions to a superior power grid. Aiming at planning and construction areas, a bottom-to-top planning method is adopted, so that the applicability of distribution network planning is practically improved, and the refinement, differentiation and standardization levels of distribution network transformation and construction are furthermore strengthened.

The invention discloses an air cooling condenser high-pressure door type or cantilever type track automatic cleaning device, comprising a high-pressure water jet cleaning device and a support on whicha cleaning device assembly is arranged; the support has a door type structure and consists of two upright posts which are vertically arranged and a beam which is horizontally arranged; the cleaning device assembly is glidingly connected with the beam of the support; and the high-pressure water jet cleaning device is connected with the cleaning device assembly by a high-pressure water pipe. The invention uses an air cooling radiation triangle of a door/console through type cleaning air cooling island, and the mode is convenient and quick compared with the prior cleaning modes; in the invention, one radiation surface can be cleaned only by one stroke, and the total design is compact and scientific; compared with the prior two cleaning modes, the cleaning time is shortened by more than half,and the cleaning efficiency is improved by 2-3 times; the cleanliness rate reaches 100%, which is incomparable to the prior modes.

A drilling multi-point communication geothermal circulating collection method is characterized in that a multi-point communication system is formed between two wells by the aid of drilling technology, and heat is obtained in a circulating manner in the multi-point communication system through working media. A method for multi-point communication between the two wells includes the steps: firstly, performing sidetracking from the lower portion of one well (A) to the other well (B), performing parallel drilling at a position with a certain distance away from a main well and exceeding the depth of the main well; secondly, packing communication between the upper portion of each multilateral well and the main well; thirdly, communicating the bottom of the main well with the lower portion of the multilateral well; fourthly, forming a plurality of parallel communication channels from the lower portion of the other well (B) to multilateral well sections at certain intervals. Technical extension includes that the multi-point communication system is fractured to obtain a crack running through the communication system, and the contact area of the working media and a heat source is increased. One well is respectively in multi-point communication with a plurality of wells in different directions to form a grouped communication system, namely, one injection well supports two production wells, three production wells, four production wells and the like to improve efficiency.

The invention provides a low-carbon economic dispatch solving method based on coordination heat supply of an electric boiler and a heat storage device. The method comprises the following steps: establishing a thermoelectric combined system model, establishing a target function with the lowest system economic environment cost according to the model, and optimizing and coordinating the model; predicting wind power output and active load power; coordinating a heat supply strategy with the electric boiler and the heat storage device, and determining the constraint conditions of the thermoelectriccombined system; and solving a low-carbon economic dispatch model based on the coordination heat supply of the electric boiler and the heat storage device by adopting a self-adjusting particle swarm optimization algorithm. According to the invention, adopting the self-adjusting particle swarm optimization algorithm, taking the Transact-SQL as a programming language, the background database adoptsSQL server 2008 to check the physical and logical consistency of the database, and by introducing the electric boiler and the electric boiler and heat storage device coordination heat supply strategy,a mathematical description of the economic environment cost of the thermoelectric combined system model is established, the scientific basis is provided for overall energy low-carbon economic dispatch, the overall investment benefit of the society is improved, and the emission of environmental pollutants is indirectly reduced.

The invention mainly relates to a photovoltaic battery online monitoring and intelligent management system capable of performing real time online monitoring on necessary parameters including voltage,current, temperature and the like of each battery panel in a photovoltaic assembly array as well as necessary parameters including voltage, current and the like of a battery pack string formed by serial connection of a plurality of photovoltaic battery strings. A data collector transmits a part of data to a cloud server as light weight data and stores a part of data in the local as permanent data.The light weight data can be read in the cloud end and the permanent data can be read in the local of the data collector. Therefore, a basis is provided for knowing real operation state of the battery and solving problems in fault positioning of the battery.

This invention puts forward a structure method for a photochromatic automatic test system used in panel TV sets such as PDP and LCD and its device, which integrates the color analysis card and digital and analog video signal boards physically on the host of the system reasonably. The system device is applied with a double channel color analyzing card and two optical image colority probes, the system is configured with a suit of 3-D detection platform, the two colority probes set on the platform can be adjusted in three dimensions freely on it, which meets the needs of photochromatic test of various sizes of panel TV sets and the needs of contacted or non-contacted measurement.

The invention discloses an automatic pricing method for a power grid marketing project bidding and a system thereof and belongs to the electric power engineering information management field. The method successively comprises the following steps of establishing a power grid marketing project classification standard work item model; establishing a corresponding power grid marketing project engineering amount model; establishing a power grid marketing project pricing model based on an engineering amount; based on an actual power grid marketing project operation need, according to the marketing project engineering amount model and the corresponding pricing model, automatically producing a power grid marketing project equipment material purchase list based on an engineering amount list, a project engineering cost gathering table and an engineering amount list total price table. In the invention, a work process and a work rule of a power grid marketing project can be further standardized; during a project enforcement process, cost data optimization can be well performed, a standard and a basis are provided for bidding control, a project investment is reasonably controlled, project enforcement is guaranteed and investment benefits are increased.

The invention relates to a virus-free potato primary stock culture medium, which is characterized in that the medium is formed by coarse sand, cow dung, modified furfural residue, mushroom residue and sawdust in a mixing and fermenting way according to air-dried volume ratio of 0.25-0.35:0.05-0.15:0.15-0.25:0.15-0.25:0.15-0.25. Since agricultural organic solid waste is used, the invention has the advantages that not only the recycling and the value adding of resources are promoted but also the production cost of virus-free potato primary stock is effectively reduced.

The invention discloses a phase-change heat-storage material and a preparation method thereof. The phase-change heat-storage material is prepared from a main heat agent, a nucleating agent, an anti-crystallizing agent, a thickener and a solvent, wherein the main heat agent is 75-85% of sodium sulfafe decahydrate, the nucleating agent is 3-5% of borax; the weight percent of the anti-crystallizing agent is 3-5%; the weight percent of the thickener is 1-3%; and the solvent is 8-10% of water. The preparation method comprises the following steps of a, adding water, the anti-crystallizing agent, the nucleating agent and the thickener to a clean plastic bucket to evenly agitate, and agitating the components into a uniform viscous mixture; b, grinding, sieving and sorting the sodium sulfafe decahydrate taken as the main heat agent, so as to form uniform fine sand, and adding to the mixture to evenly agitate, so that each component is evenly dispersed. The phase-change heat-storage material forms a colloid state after heat-absorption and phase-change; the phase-change times are more; and an over-cold problem is not easily generated.

The invention discloses a subway interval tunnel settlement observation method and device. The subway interval tunnel settlement observation method includes steps of inclinometry pipe arranging, horizontal inclinometer arranging, inclinometry data measuring and the like. The measuring device comprises an inclinometry pipe and a horizontal inclinometer, wherein a guide groove with a fixed direction is arranged in the inclinometry pipe, and a guide wheel is arranged on the horizontal inclinometer and clamped into the guide groove of the inclinometry pipe. The subway interval tunnel settlement observation method and device are continuous in measuring points, can perform measuring during subway operation and are short in measuring time and low in cost.

The invention discloses a load prediction method based on industry-classified power utilization characteristic analysis, and the method comprises the following steps: S1, dividing power users into industry power utilization users and resident power utilization users, dividing the resident power utilization users into residence community users and small-capacity public transformers; S2, identifyingsaturated users and unsaturated users in industrial power utilization users and residential district users by using a load saturation identification technology; S3, taking the average load value of the saturated users as a future prediction value in recent three years; carrying out typical growth pattern analysis on unsaturated users and installation users; S4, summarizing and counting the natural growth rate of the small-capacity public transformer; S5, calculating the coincidence rate in the industry and the coincidence rate between the industries respectively; and S6, summarizing all typesof loads to obtain a whole-region load prediction result. Classification prediction is carried out on the basis of power utilization growth characteristic analysis of mass user load data, and then the simultaneous rates of all levels are applied to summarize and calculate the total load prediction result of the area.

A load management device can dynamically monitor power loads consumed by a user to provide accurate and timely power load data for power demand side management, a customer is informed as required, and the loads are controlled by operating a switch. The load management device and management method are used for flattening a load curve, accordingly, the power loads can be used in a balanced manner, the economic performance and the safety of power grid operation are improved, and the investment benefits of a power enterprise are increased.

The crushed coal pressure gasifying process for producing synthetic gas includes pressure gasifying of crushed oil in a fixed bed to produce crude gas, and the subsequent self-heating pure oxygen partial conversion of crude gas to produce synthetic gas. Thus produced synthetic gas has high effective gas (CO+H2) content, low CH4 content, less impurities and other advantages, and is suitable for large scale synthetic gas production.

The invention aims to provide a mechanism capable of automatically removing accumulated snow from a solar panel. A resistance wire is coated, printed or arranged by using a back packaging material of the solar panel, a self-contained storage battery of a system or a mains supply can be used during snow accumulation, the snow on the surface of a battery module is melted by heating the resistance wire, and most accumulated snow automatically slides under the influence of gravity by using the characteristic that the solar panel is obliquely arranged, so that the aim of removing the accumulated snow is fulfilled. The mechanism is applied to the solar panel, so that the phenomenon that generating capacity is reduced due to snow accumulation in a high-latitude area in winter is avoided, annual total generating capacity can be improved, and investment benefits are improved. The mechanism can be used on all kinds of solar panels including monocrystalline silicon and polycrystalline silicon solar panels and various thin film solar panels.

The invention discloses an automobile door assembly gauge and relates to the technical field of automobile manufacture. The automobile door assembly gauge comprises a base. A section annular detection block installed through a plurality of location devices is arranged on the base, an inner section detection block, a lineation detection device and a sliding detection block are arranged in the section annular detection block, and an overturning section detection device is arranged on the outside of the section annular detection block. The location device comprises a telescopic location unit, a disassembly location unit and an overturning location unit. A deep hole detector is arranged on the base on the outer side of the section annular detection block. Compared with the prior art, the automobile door assembly gauge can simulate various location states of an automobile door, accurately measure the size accuracy and position accuracy of an automobile door in the states and solve the problem that the existing automobile door assembly gauge is single in function and cannot conduct deep hole measurement.

The invention discloses a method for managing electric energy substitution planning. According to the method, on the basis of combing and summarization of previous electric energy substitution work performances, successful experiences, current situations of China's energy supply and consumption, the actual development situation of the electric energy substitution technique, and economic and policysupport conditions, research analyses on the theoretical potential, technical feasibility potential, environment-protection feasibility potential, and economical feasibility potential of the electricenergy substitution are carried out based on different calibers in construction, industry, transportation, agriculture, and household fields by combining various provinces and cities and conclusionsare collected step by step. With the method for managing electric energy substitution planning, the electric energy substitution planning can be carried out scientifically; the electric energy substitution potential analysis is carried out; an electric energy substitution planning principle, an objective, and a key task are proposed; and the reference is provided for the related interested party for investment.

The invention discloses a power grid investment distribution and decision-making method and system based on power distribution network comprehensive evaluation, and the method comprises the followingsteps: S1, constructing a county power distribution network comprehensive evaluation system, determining evaluation indexes, calculating the weights of the indexes, and calculating the scores of the evaluation indexes; S2, constructing a power grid investment distribution model for investment distribution; wherein S2 specifically comprises the steps of establishing a power distribution network investment allocation decision model of the system on the premise of considering county scale, load increase, power supply capability, economic benefit and social benefit of investment, allocating totalcapital of power distribution network construction and reconstruction to each county, and finally, taking risk factors and allocation fairness as optimization objectives, and optimizing the generatedpower distribution network investment and decision-making model to obtain an optimal decision model. The optimal combination of power grid investment projects is obtained by evaluating the investmentarea and introducing the capital constraint conditions according to the necessary factors of the power grid construction comprehensive level, and decision-making support is provided for power distribution network construction investment capital distribution.