Heat Supply Network Hydraulic Circuit Modeling Method
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Solution Overview
Problem
Current methods for hydraulic analysis of heat supply networks lack a unified theory and model, separating hydraulic dynamic and steady states, which hinders comprehensive energy system scheduling and efficiency.
Innovation Solution
A heat supply network hydraulic circuit modeling method that unifies hydraulic analysis models with power network models, establishing connections between hydraulic dynamic and steady states through thermal pipeline, flow control valve, and compressor models, and applying Kirchhoff-like laws to derive dynamic and steady hydraulic network equations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If steady modeling method is used for hydraulic analysis of heat supply network, then the model is simple and easy to operate, but the physical meaning is unclear and it separates the connection between hydraulic dynamic state and hydraulic steady state
Solution Approach 1:
The patent applies dynamics principle by establishing a dynamic hydraulic analysis model that captures the transient behavior of the heat supply network. The model uses differential equations to describe the time-varying flow and pressure characteristics, transforming the static steady-state model into a dynamic one that preserves physical meaning while remaining operable through systematic formulation.
2Ease of manufacture
If steady modeling method is used for hydraulic analysis of heat supply network, then the model is simple to establish, but it separates the connection between hydraulic dynamic state and hydraulic steady state
Solution Approach 1:
The patent applies segmentation principle by dividing the heat supply network into discrete hydraulic components (pumps, heat exchangers, pipelines, valves) and representing each with its own differential equation. This segmented approach allows the complex dynamic system to be built from manageable parts while maintaining the connections between dynamic and steady states through the systematic assembly of component models.
3Productivity
If unified hydraulic analysis model is established for heat supply network and power network, then the comprehensive energy system scheduling is improved, but the device complexity increases
Solution Approach 1:
The patent applies universality principle by creating a unified hydraulic analysis model that can handle both heat supply network and power network scheduling within a single comprehensive framework. The model uses universal differential equation formulations and standardized component representations that can be applied across different system types, reducing the need for separate specialized models and improving overall scheduling efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method provides a clear and comprehensive modeling approach that integrates thermal and electrical energy flow systems, enhancing scheduling and efficiency by abstracting hydraulic circuit elements and considering network topology, resulting in a highly unified mathematical form.
Implementation Method 1
establishing a mass conservation equation and a momentum conservation equation describing a one-dimensional flow process of water in the thermal pipeline
Implementation Method 2
establishing a mass conservation equation and a momentum conservation equation describing a one-dimensional flow process of water in the thermal pipeline
Implementation Method 3
abstracts hydraulic circuit element models such as hydraulic resistance, hydraulic inductance and hydraulic pressure source
Implementation Method 4
abstracts hydraulic circuit element models such as hydraulic resistance, hydraulic inductance and hydraulic pressure source
Data Source
AI summary
A heat supply network hydraulic circuit modeling method for a comprehensive energy system scheduling is provided. The hydraulic analysis model is unified with the power network model, and the connection between the hydraulic dynamic state and the hydraulic steady state is established. Based on the characteristic equations of thermal pipelines, flow control valves and compressors, this method abstracts hydraulic circuit element models such as hydraulic resistance, hydraulic inductance, and hydraulic pressure source, establishes hydraulic branch characteristics of the heat supply network based on the above hydraulic circuit elements, establishes the hydraulic topology constraints of the heat supply network based on Kirchhoff-like voltage and current laws, and establishes the steady hydraulic network equation by combining the above hydraulic branch characteristics and hydraulic topology constraints.