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Regional comprehensive energy system optimization control method based on practical security domain

An integrated energy system, optimized control technology, applied in system integration technology, information technology support system, data processing application, etc., can solve the problems of inapplicable online security analysis, one-sided security information, large amount of calculation, etc., to promote safety and efficiency The effect of operating, maintaining safe operation, and improving the safe state

Active Publication Date: 2020-07-14
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the research on the safety of integrated energy systems is based on the traditional point-by-point method. The safety status is judged by point-by-point simulation and verification of local limited operating points. The obtained safety information is relatively one-sided, and the calculation is large and time-consuming, which is not applicable. online security analysis

Method used

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  • Regional comprehensive energy system optimization control method based on practical security domain
  • Regional comprehensive energy system optimization control method based on practical security domain
  • Regional comprehensive energy system optimization control method based on practical security domain

Examples

Experimental program
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Embodiment 1

[0039] In order to improve the security status of the regional integrated energy system and promote the safe and efficient operation of the system, the embodiment of the present invention provides an optimal control method for the regional integrated energy system based on the practical security domain, as described below for details:

[0040] 101: Based on the practical safety domain, an optimal control model of the regional integrated energy system including optimization objectives and operational constraints is constructed;

[0041] 102: Using the NSGA-II algorithm to solve the above control model, a set of optimal system optimization control scheme set (Pareto optimal solution set) and objective function (Pareto frontier) can be obtained.

[0042] 103: The specific description of the control scheme is that for the control object, that is, the key pipeline outlet load, adjust its size by adjusting the switch state, valve opening amount, etc., so as to realize the adjustment ...

Embodiment 2

[0045] The scheme in Embodiment 1 is further introduced below in conjunction with calculation formulas and examples, see the following description for details:

[0046] 201: Based on the practical safety domain, an optimal control model of regional integrated energy system including optimization objectives and operational constraints is constructed.

[0047] First, a brief introduction to the safety domain theory of the practical regional integrated energy system is defined. The practical safety domain of the regional integrated energy system is defined as: taking into account the key equipment of the energy hub, the safety constraints of the transfer zone after the N-1 failure of the key pipeline outlet, and the energy balance constraints. Regardless of the inequality of pipeline operation constraints, the set of all operating points in the system that can satisfy the N-1 safety criterion. Its mathematical model is:

[0048] Ω P-RIESSR ={L|h(L)=0,W min ≤W(L)≤W max} (1)

...

Embodiment 3

[0101] The feasibility of the optimization method provided by the embodiment of the present invention is verified by specific experiments below, see the following description for details:

[0102] Referring to a project case in which a regional comprehensive energy system with electricity, natural gas, and heat as energy demands is used to set up a calculation example scenario, for the convenience of analysis, the number of substations, regional energy stations and pipeline lines is reduced. The topology of the calculation example is as follows: Figure 4 shown. The practical safety domain boundary expression corresponding to the simulation example can be simplified as follows:

[0103]

[0104] In the formula, L m Indicates the outlet load of pipeline section m; B 1 , B 3 , B 5 …B 19 means L 1 -L 10 The lower bound of B 2 , B 4 , B 6 …B 20 means L 1 -L 10 the upper boundary of ; P CP1 ,P CP2 means CP 1 、CP 2 Power consumption; P C1 ,P C2 ,P C3 ,P C4 In...

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Abstract

The invention discloses a regional integrated energy system optimization control method based on a practical security domain, and the method comprises the steps: constructing a regional integrated energy system optimization control model comprising an optimization target and an operation constraint based on the practical security domain; solving the control model by adopting an NSGA-II algorithm to obtain a group of optimal system optimization control scheme sets; aiming at the pipeline outlet load, adjusting the size of the pipeline outlet load by adjusting the opening and closing state and the valve opening degree, correspondingly reducing or increasing the pipeline outlet load, and achieving the adjustment of the position of a working point in a safety domain. The method can effectivelysolve the control problem of the regional comprehensive energy system from the safe state to the safe and efficient state, and obtains the control strategy which enables the system to move from the safe state to the safe and efficient state with the fastest speed and the optimal control measure economy.

Description

technical field [0001] The invention relates to the field of optimal control of comprehensive energy systems, in particular to a method for optimal control of regional comprehensive energy systems based on a practical safety domain. Background technique [0002] Integrated energy system (integrated energy system, IES) is the concrete embodiment of advanced concepts such as "Internet +" at the energy physical level. It has become one of the main development trends of future energy utilization patterns. The deeply coupled integrated energy system faces potential safety hazards during operation. A component failure will affect the safe operation of other energy subsystems. Compared with traditional independent energy systems, the planning, design, and operation scheduling of integrated energy systems , security analysis, protection control and other aspects will face new challenges. As the most basic requirement for the operation of energy systems, safety and reliability are ...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06Q10/04G06Q50/06
CPCH02J3/00G06Q10/04G06Q50/06Y04S10/50
Inventor 王丹李思源刘柳贾宏杰
Owner TIANJIN UNIV
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