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Power-to-gas conversion technology-based regional integrated energy system online optimization method

An integrated energy system and optimization method technology, applied in the field of online optimization of regional integrated energy systems, can solve problems such as low energy utilization, large prediction errors, and poor user experience

Active Publication Date: 2018-09-04
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0006] In order to overcome the shortcomings of the existing comprehensive energy system, such as large prediction error, poor user experience, and low energy utilization rate, the present invention provides a controllable load HVAC as the main decision-making body, and then realizes event-driven online energy optimization. The aim is to ensure user comfort while minimizing user costs, and at the same time absorb as much renewable energy as possible, improve energy utilization, and realize an energy online collaborative optimization method for both sides of supply and demand

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Embodiment Construction

[0096] The present invention will be further described below in conjunction with the drawings.

[0097] Reference Figure 1 ~ Figure 7 , An online optimization method of regional integrated energy system that takes into account the electricity-to-gas technology, including the following steps:

[0098] S1 obtains real-time information of system status

[0099] System real-time information includes real-time HVAC cumulative queue Q(t), wind and solar power generation S(t), base load L B (t), HVAC power demand L(t), current grid electricity price R(t) and current indoor temperature T(t). Among them, base load, indoor temperature and grid electricity price can be directly transmitted to the energy management center through information flow.

[0100] Controllable load HVAC is the dispatch object of comprehensive demand response, and the electric energy demand L(t) at t can be expressed as:

[0101] L(t)=[L 1 (t),L 2 (t),...,L N (t)],t∈[1,2,···,T] (1)

[0102] In the case of meeting the user...

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Abstract

The invention relates to a power-to-gas conversion technology-based regional integrated energy system online optimization method. The method includes the following steps that: the real-time information of the status of a system is obtained; when an event is triggered, the system will generate triggering signals and notify a power controller to respond to the event; Lyapunov-based based energy online optimization is adopted to obtain the current optimal actual power consumption X(t) of HVAC; and energy scheduling is performed for other units in the system. According to the method of the invention, the controllable load HVAC is adopted as a decision-making subject, so that event-driven energy online optimization can be realized. The method aims to ensure the comfort of a user while minimizing the cost of the user, and at the same time, absorb renewable energy as much as possible, improve an energy utilization rate, and achieve online energy collaborative optimization for a supply side and a demand side. Since the HVAC is adopted as the decision-making subject, and collaborative optimization of the supply side and demand side is realized, the comfort of the user can be ensured, the cost of the user can be minimized, and therefore, a fast scheduling method can be expected to be provided for the energy management of an integrated energy system.

Description

Technical field [0001] The invention relates to an online optimization method of a regional integrated energy system that takes into account the electricity-to-gas technology. Background technique [0002] In today's society, energy utilization is developing in the direction of multi-energy integration and collaborative optimization. Break the traditional mode of independent operation between power and natural gas networks, and coordinate, cooperate and optimize different energy supply systems in the planning, design, construction and operation stages, and finally realize an integrated comprehensive energy system (Integrated Community Energy System, ICES) is the best way to achieve the best social energy efficiency, promote the large-scale utilization of renewable energy sources (RES), and realize the sustainable development of human energy. [0003] The volatility and intermittentness of renewable energy power generation output represented by wind power restricts its large-scale ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/46H02J3/14
CPCH02J3/14H02J3/46H02J2203/20Y02B70/30Y02B70/3225Y04S20/222Y04S20/244
Inventor 张有兵杜夏冰杨晓东王嘉瑶王国烽
Owner ZHEJIANG UNIV OF TECH
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