Coordinated scheduling method of thermoelectric power in integrated energy system based on district heating network

A technology of integrated energy system and coordinated dispatch, which is applied in the field of coordinated dispatch of thermoelectric power of integrated energy system based on district heating network, which can solve the adverse effects of coordinated dispatch of integrated energy system, affect heat supply quality, affect system flexibility and economic benefits, etc. question

Active Publication Date: 2021-08-20
SOUTHEAST UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Many current studies on thermoelectric coupled integrated energy systems are related to the planning and operation of district heating networks, and only a few focus on the scheduling of integrated energy systems and district heating networks, and most of them are district heating networks under quality regulation or quality-quantity regulation However, the delay and thermal imbalance under mass regulation seriously affect the quality of heat supply, which will affect the flexibility and economic benefits of the entire system, and have an adverse effect on the coordinated scheduling of the integrated energy system

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  • Coordinated scheduling method of thermoelectric power in integrated energy system based on district heating network
  • Coordinated scheduling method of thermoelectric power in integrated energy system based on district heating network
  • Coordinated scheduling method of thermoelectric power in integrated energy system based on district heating network

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Embodiment 1

[0082] A method for coordinated dispatching of thermoelectric power in an integrated energy system based on a district heating network, including the following steps:

[0083] S1, establishing a regional heating network model including nodes and hot water pipes, the establishment of the regional heating network model further includes:

[0084] S11, establishing the scheduling constraints of the district heating network model, the constraints include mass conservation constraints, mass flow constraints, pressure drop and electric pump power constraints, thermal power constraints, and heat source and heat exchange station constraints;

[0085] The mass conservation constraints are:

[0086]

[0087] in, Indicates the mass flow rate of the pipe segment i in the time period t, Represents the set of all pipe segments connected to node j, Θ in Represents the collection of all nodes;

[0088] The mass flow constraints are:

[0089]

[0090] in, and Respectively repre...

Embodiment 2

[0148] We use the modified multi-energy flow system based on an actual multi-energy system in Changchun as a case study. The structure diagram of the improved multi-energy flow system is shown in Figure 4 shown. The system consists of two cogeneration systems of different capacities, such as figure 1 as shown, figure 1 (a) is an integrated energy system structure, figure 1 (b) Cogeneration system structure, the difference is that cogeneration system No. 1 includes a 1.5MW fan, and cogeneration system No. 2 has no storage battery. The specific parameters of the two CHP systems are shown in Table 1. The district heating network has 2 heat source nodes, 25 heat exchange station nodes and 24 confluence nodes. The scheduling duration is 24 hours, and the scheduling period is 1 hour, δ f = 1%, δ T =0.01°C, other parameters are shown in Table 2 and Table 3. In order to illustrate the performance and solution strategy of the proposed dispatching strategy, the operating res...

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Abstract

The patent of the present invention discloses a coordinated scheduling method of thermoelectric power in an integrated energy system based on a district heating network. First, a district heating network model including nodes and hot water pipes is established. The model includes scheduling constraints and temperature correction equations, and then builds the The optimal coordinated dispatching model of the integrated energy system based on the district heating network, according to the initial temperature of the water flow in the water supply and return water pipe network, solve the optimal coordinated dispatching model, obtain the mass flow of hot water in the pipe network, and use the mass flow as input to solve The temperature correction equations are used to obtain the actual mass flow temperature, set the allowable error of the mass flow temperature, calculate the temperature difference between the actual mass flow temperature and the initial temperature, and propose an iterative solution strategy for the optimal coordination scheduling model. Based on the analysis, an effective method to ensure convergence is proposed, which can quickly respond to load changes, realize the flexible distribution of heat load among integrated energy systems based on district heating networks, and ensure the heating quality and system flexibility.

Description

technical field [0001] The invention belongs to the technical field of integrated energy system operation, and in particular relates to a method for coordinating and dispatching thermoelectric power of an integrated energy system based on a district heating network. Background technique [0002] Energy is related to human survival and social development. How to improve energy utilization efficiency, reduce environmental pollution, and achieve sustainable energy development is a major strategic issue of common concern to all countries in the world today. The integrated energy system with significant advantages such as economy, high efficiency, and sustainability fully considers the synergy and complementarity of different forms of energy such as electricity, gas, cold, and heat in production, transmission, and distribution. It has become a key research direction for the Energy Internet. It has been paid more and more attention by governments and scholars all over the world. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 顾伟邱玥吴志周苏洋
Owner SOUTHEAST UNIV
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