34 results about "Energy flow analysis" patented technology

The invention discloses an integration testing method for analyzing the energy flow of a finished automobile. The method comprises the steps of installing a testing element of a power transmission system, installing a cooling system, an air conditioning system, a gas exhaust piping, a lubricating system, and a testing element for testing the network of an electric appliance, installing testing elements for a passenger compartment and an engine compartment, creating a testing environment, and testing and recording the real-time parameters of the above subsystems, wherein the cooling system, the air conditioning system, the gas exhaust pipe, the lubricating system and the testing element for testing the network of the electric appliance are connected with an engine. By the testing method, the real-time parameters of various subsystems of the same automobile under the same environment and working conditions are recorded, and the requirements of the analysis of energy flow of the finished automobile on the real-time parameters of the various subsystems are met.

The invention relates to a dynamic power balance analyzing system for a lunar explorer and belongs to the technical field of lunar explorers. According to the dynamic power balance analyzing system disclosed by the invention, the energy analyzing process of the whole process from the emulation start to emulation ending is realized, relevant information conditions of power balance in the whole flying process are dynamically displayed and the omni-bearing power balance information is presented by using various modes such as a process curve, graph display and digital list display. The dynamic power balance analyzing system has a function of modifying flying programs; users can be allowed to simply input new flying programs; and the adaptability of different programs is solved. According to the dynamic power balance analyzing system disclosed by the invention, a system model library is established; parameters of the system model library are outputted to fit actual telemetry parameters of an aircraft and an analysis result with higher accuracy is obtained.

The invention discloses a natural gas probability-fuzzy energy flow analysis method considering multiple uncertainties, which mainly includes the following steps: 1) Establishing a natural gas system model. 2) Establishing a probability model of the unbalanced node load. 3) Sampling the probability model of the unbalanced node load by using the Latin super-cubic method, so as to obtain an N×NL dimensional load probability sample matrix. 4) Establish the fuzzy model of the comprehensive parameters of the pipeline. 5) Sampling the fuzzy model of the comprehensive parameters of the pipeline using the α-cut method. 6) Using Newton's method to calculate the pipeline energy flow and pipeline unbalanced node pressure in the natural gas system. 7) Calculate the possibility measure Pos and the inevitability measure Nec of the output variable, so as to obtain the belief function Bel and the plausibility function Pl of the output variable. The invention combines the influence of two types of uncertain factors, probability and fuzzy, and can effectively and accurately calculate the variation range of the output variable of the natural gas system.

The invention relates to a micro-grid modeling approach, in particular to a micro-grid versatile flow modeling method based on different types of energy. The approach comprises the steps of (1) constructing a versatile flow model, including energy and energy flow analysis, energy conversion link analysis, energy distribution link analysis, energy storage link analysis, energy utilization link analysis and energy management link analysis; and (2) constructing a versatile flow network model. The approach systematically describes the energy characteristics of energy flow in the processes of generation, conversion, transmission, storage and utilization through a unified quantitative versatile flow digital model. Meanwhile, the theory can also be used flexibly for energy unified quantitative analysis of a single device through lumped constraints. In practical applications, the invention can freely and flexibly select each links in the energy network as required, takes factors under different situations and constraints into full consideration, systematically establishes a corresponding versatile flow model, and achieves unified quantitative analysis of different types of energy in a micro-grid.

The present invention discloses a vehicle electricity load performance test method. The method comprises the following steps of: S1, setting a test environment to a room temperature vehicle environment; S2, measuring a working current and a working voltage of an electricity load; S3, performing data validity determination of the working current and the working voltage; and S4, calculating equivalent resistance and power of the electricity load. The vehicle electricity load performance test method can improve the accuracy and the reliability of the vehicle electricity load detection and has animportant meaning for the vehicle energy flow analysis.

The invention provides an embodied carbon energy-based machine tool equipment product carbon emission quantification method. The method comprises three parts, i.e., machine tool equipment product material flow and energy flow analysis, a machine tool equipment product carbon emission quantification model and an embodied carbon energy-based carbon emission quantification method. A machine tool equipment product material flow and energy flow superposition principle is provided by analyzing the characteristics of energy flow and material flow; a carbon emission boundary model at a main lifecycle stage is established, and a machine tool equipment product carbon emission quantification principle is given based on an embodied carbon energy concept; an embodied carbon energy-based specific carbon emission calculation formula is obtained according to the characteristics of the main lifecycle stage. The invention adopts an embodied carbon energy quantification method, which takes a product as the boundary, for providing data support for a low carbon design, and is more close to the target object requirements of actual low-carbon optimization improvement, so that the practicality and consistency of the carbon emission boundary and a calculation result are guaranteed, and an effective basis and theoretical support are provided for energy conservation and emission reduction of products manufactured by machine tool equipment.

The invention relates to an equivalent power source-based unified multi-energy power system coupling model building method. A unified coupling model of various heterogeneous energy generation units and power plants and stations is built by adopting a power source equivalence principle. According to the method, each heterogeneous energy generation unit is equivalent to a voltage source and a controllable resistor connected in series to form a unified generation model; various heterogeneous energy power plants and stations are equivalent to controllable current sources separately; an energy storage device is equivalent to a capacitor; and coupling grid connection is carried out to form a unified multi-energy power system coupling model. The installed capacity of the power plants and stationscan be adjusted through control coefficients of the controllable current sources. The built unified multi-energy power system coupling model is suitable for static energy flow analysis of a multi-energy power system and is also suitable for dynamic process analysis, unified description of multiple time scales of the multi-energy power system is achieved, and a theoretical basis is provided for coordinated control and optimal scheduling of the multi-energy power system.

The invention discloses a multi-energy flow analysis method of an electro-thermal system based on the improved Sukhov cooling formula, comprising: identifying the topology structure of the electro-thermal system, reading the known state quantities of the energy flow of the electro-thermal system, and determining The node type of the electric-thermal system and select the balance node of the power system and the network system; set the iterative initial value of the required state quantity of the electric-thermal system energy flow, and pass the iterative initial value of the required state quantity Calculate the electric power and thermal power of the electric-thermal balance node of the electric-thermal system; establish and calculate the state deviation function according to the known state quantity and the state quantity to be requested of the energy flow of the electric-thermal system; and adopt Newton-Raphson The algorithm iteratively solves, and finally obtains the state quantities of the power system and thermal system, and calculates the data such as gas consumption rate, electric-thermal network loss, etc., which can quickly and accurately analyze the regional multi-energy flow system, which is beneficial to the multi-energy flow system. The safe and stable operation and status assessment of the system.

The invention discloses a quasi-steady-state energy flow analysis method of an electric-water integrated energy system. The steps include: 1) obtaining network structure parameters of the electric-water integrated energy system; 2) obtaining the initial steady state of the electric-water integrated energy system Energy flow, that is, the energy flow distribution of the water distribution network and the power flow distribution of the distribution network at time t=0. 3) Use the characteristic line method to calculate the transient energy flow and pump power of the water distribution network in the next period; 4) Substitute the pump power of the next time step into the distribution network as the electrical load, and calculate the power of the next time step. Distribution network energy flow; 5) Save the energy flow calculation result, if the current time t is less than the total duration T, return to step 3), otherwise, output the distribution network energy flow. The invention comprehensively considers the transient characteristics of the water distribution network in the process of analyzing the energy flow of the electric-water integrated energy system, and can analyze the influence of the transient process of the hydraulic system with a time scale of minutes or seconds on the electric-water integrated energy system.