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Dynamic equivalent circuit of combined heat and power system and working method thereof

A technology of combined heat and power supply and system dynamics, applied in the field of efficient circuits, can solve problems such as inability to respond to the dynamic process of the thermal system, achieve the effects of protecting detailed parameter information, reducing model complexity, and simple structure

Active Publication Date: 2021-07-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the simulation system with "electricity" as the core, equipment models such as heat and gas are added to the power analysis tool. The model is simple and cannot reflect the dynamic process of the thermal system.

Method used

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  • Dynamic equivalent circuit of combined heat and power system and working method thereof
  • Dynamic equivalent circuit of combined heat and power system and working method thereof
  • Dynamic equivalent circuit of combined heat and power system and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a dynamic equivalent circuit of a cogeneration system;

[0037] Such as figure 1 As shown, the dynamic equivalent circuit of the combined heat and power system includes:

[0038] Use the controlled source to characterize the thermoelectric coupling source; use the equivalent inductance to characterize the delay of the heat transfer pipeline; use the equivalent resistance to characterize the heat load and heat loss of the heat transfer pipe; use the equivalent capacitance to characterize the hot water storage tank.

[0039] Further, the circuit includes: a first branch and a second branch;

[0040] Among them, the first branch includes: sequentially connected input terminals, controlled voltage source U e , resistance R e and output;

[0041] Wherein, the second branch includes: the input terminals connected in sequence, the controlled current source I 0 h and ground terminal;

[0042] Among them, the first branch and the second branch are...

Embodiment 2

[0101] This embodiment provides a dynamic equivalent circuit simulation method for a combined heat and power system;

[0102] A dynamic equivalent circuit simulation method for cogeneration systems, including:

[0103] Use the controlled source to characterize the thermoelectric coupling source; use the equivalent inductance to characterize the heat transfer pipeline delay; use the equivalent resistance to characterize the heat load and heat loss of the heat transfer pipe; use the equivalent capacitance to characterize the hot water storage tank;

[0104] At an electrical load of R e In the case of , the supply voltage of the thermoelectric coupling source is U e ;

[0105] The heat flow flows out from the waste heat recovery system of the thermoelectric coupling source; the heat flow flows through the heating pipeline after the transmission delay time, and generates heat loss;

[0106] If both the first switch and the second switch are turned on, all the heat flow is used fo...

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Abstract

The invention discloses a dynamic equivalent circuit of a combined heat and power system and a working method thereof. A controlled source is used for representing a thermoelectric coupling source; heat transfer pipeline delay is represented by using equivalent inductance; the heat load and the heat loss of the heat transfer pipeline is represented by using the equivalent resistance; and the heat storage water tank is represented by using the equivalent capacitance. The circuit model is utilized to uniformly represent two heterogeneous energy sources of thermoelectricity, and a single electric power simulation tool can be utilized to simulate the cogeneration system, so that the simulation system is simple in structure and easy to develop and maintain.

Description

technical field [0001] The invention relates to the technical field of cogeneration simulation technology, in particular to a dynamic equivalent circuit of a cogeneration system and a working method thereof. Background technique [0002] The statements in this section merely mention the background technology related to the present invention and do not necessarily constitute the prior art. [0003] Combined heating and power system (Combining heating and power system) has received extensive attention from governments and enterprises in various countries due to its advantages of high primary energy utilization efficiency and safe and reliable energy supply. Electric heating is a heterogeneous energy source, with great differences in physical characteristics and disciplines, and inconsistent characterization methods and research methods. Existing simulation systems use various types of energy simulation software to co-simulate multi-energy systems in the form of data communica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/00H10N10/17H10N10/13
CPCG01N25/00F24H9/2021F24H9/1818H10N10/17H10N10/13F24H2250/02F24H2250/04F24H2250/08
Inventor 孙波陈晶张承慧
Owner SHANDONG UNIV
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