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Multi-energy flow analysis method for electro-thermal system based on improved Sukhov cooling formula

An analysis method and thermal system technology, applied in the field of multi-energy flow analysis of electro-thermal systems based on the improved Sukhov cooling formula, to achieve the effect of improving rapid convergence and increasing speed

Active Publication Date: 2021-08-24
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is how to obtain the unknown parameter quantity of the energy flow in the electric-thermal hybrid comprehensive energy system by improving the fast convergence of iterative calculation, so as to realize the regional electric-thermal hybrid comprehensive energy system's reconstruction strategy or The problem of hybrid dispatching control strategy design of electric-thermal system is to provide a multi-energy flow analysis method of electric-thermal system based on the improved Sukhov cooling formula to solve the above problems

Method used

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  • Multi-energy flow analysis method for electro-thermal system based on improved Sukhov cooling formula
  • Multi-energy flow analysis method for electro-thermal system based on improved Sukhov cooling formula
  • Multi-energy flow analysis method for electro-thermal system based on improved Sukhov cooling formula

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Embodiment 1

[0132] Such as figure 1 , figure 2 As shown, the electro-thermal system multi-energy flow analysis method based on the improved Sukhov cooling formula includes:

[0133] S1: Identify the topology of the electro-thermal system, read the known state quantities of the energy flow of the electro-thermal system, determine the node type of the electro-thermal system and select the balance node of the power system and network system;

[0134] The power system includes three nodes: PQ node, PV node and balance node, and the thermal system includes three nodes: heat source node, heat load node and balance node;

[0135] The known state quantities include the active power P and reactive power Q of the PQ node, the active power P and the voltage amplitude U of the PV node, the reference phase angle θ=0 of the balance node, the admittance matrix Y of the branch, and the thermal power Φ of the heat source node , The heating temperature T of the heat source node s,sourse , Outlet water ...

Embodiment 2

[0214] On the basis of Embodiment 1, an off-grid electric-thermal energy supply system is taken as an example. The system supplies energy to several electric-heat loads in five sub-regions. The voltage level of the main power network is 11kV. Its topology, Branch lengths and numbering such as image 3 shown. This calculation example contains three heat and electricity balance nodes, which are gas turbine, steam turbine and gas internal combustion engine. The outlet voltage of the gas turbine is 33kV. power grid. The steam engine is chosen as the balance node of the thermal system, while the gas turbine is chosen as the balance node of the power system. According to the regional division, the types and load sizes of each electricity and heat load are shown in Table 1, and the division and known quantities of each source node are shown in Table 2.

[0215] Table 1 Electricity and heat load type and load size

[0216]

[0217]

[0218] Table 2 Division and known quantit...

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Abstract

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.

Description

technical field [0001] The invention relates to the field of electric-thermal combination systems, in particular to an analysis method for multi-energy flow of the electric-thermal system based on the improved Sukhov cooling formula. Background technique [0002] The integrated energy system with electric-thermal hybrid supply and transformation is a kind of energy organization that realizes efficient, clean and economical energy consumption terminal supply. The electric-thermal hybrid integrated energy system takes the power network and the heating network as a whole, And the electric-thermal hybrid comprehensive energy system is optimized in terms of configuration and operation to achieve the best benefit of energy. [0003] When designing a regional electricity-heat supply system, it is necessary to calculate the flow of electric energy and heat energy in the area to know the specific flow details of energy. However, the expansion from the conventional power supply syste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06G06Q10/06G06Q50/06
CPCG06Q10/0639G06Q50/06H02J3/06Y02P90/82
Inventor 靳旦曾琢琳范成围刘畅魏巍
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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