An energy management method of integrated energy system based on consistency

Abstract

The invention provides an energy management method of an integrated energy system based on consistency. Participants of a heat power grid, a power grid, an energy supply side and a load demand side all participate in an energy market to pursue their own benefit maximization and constitute a whole social welfare maximization model. The CHP unit operates in an improved operation strategy, in which both the electric load and the thermal load are involved in the demand response. The original optimization problem is decomposed into four sub-problems which are composed of local constraints and objective functions after decoupling the global power balance by Lagrange multiplier method, so it is suitable to use the fully distributed consistency algorithm to solve the problem. The method fully considers the thermoelectric coupling on the power supply side and the thermoelectric coupling on the load side, and the complete distributed solution has high efficiency on the basis of guaranteeing theprivacy of users, which has a good guiding significance for the distributed energy management of the future integrated energy system in the distribution network level.

Description

technical field [0001] The invention belongs to the technical field of power system energy management, and in particular relates to an energy management method for an integrated energy system based on consistency. Background technique [0002] Energy and environmental issues affect social and economic development. Integrated energy systems have great advantages in improving energy utilization efficiency and reducing environmental pollution. In recent years, integrated energy systems have been widely studied and applied. Compared with the planning and coordinated control of integrated energy systems, energy management has attracted much attention from researchers in terms of reducing operating costs. Traditional energy management methods have a common feature: they all require centralized optimization, that is, a control center is required To collect and process the information of each participant. However, at the distribution network level, different entities belong to diffe...

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Problems solved by technology

Compared with the planning and coordinated control of integrated energy systems, energy management has attracted much attention from researchers in terms of reducing operating costs. Traditional energy management methods have a common feature: they all require centralized optimization, that is, a control center is required To collect and process the information of each participant. However, at the distribution network level, different entities belong to different operating units. Therefore, considering the privacy of information and the uncertainty of the ownership of participants, centralized optimization is no longer applicable to our network. Scenarios, on the contrary, distributed optimization shows more advantages

The energy management problem of the integrated energy system is different from the pure power network. The network is composed of an electric network and a thermal network, and there is coupling of heat and electricity on the energy supply side and the load consumption side. For distributed integrated energy System energy management methods are yet to be further studied

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