  Most planning of the traditional hydrogen energy supply chain (HSC) focuses
on the storage and transportation links between production and consumption
ends. It ignores the energy flows and interactions between each link, making it
unsuitable for energy system planning analysis. Therefore, we propose the
concept of a hydrogen energy chain (HEC) based on the HSC, which emphasizes the
interactions between different types of energy flows in the production,
compression, storage, transportation, and application links of hydrogen. The
HEC plays a crucial role in mitigating fluctuations of renewable energy and
facilitating the optimal allocation of heterogeneous energy sources across time
and space. Effective collaborative planning models that consider HEC are
essential for the optimal configuration of multi-energy systems (MESs), which
guarantees high-efficiency operation and the economic and environmental
friendliness of the system. This paper presents a systematic review of recent
articles on collaborative planning of integrated hydrogen energy chain
multi-energy systems (HEC-MESs). First, we introduce the basic framework of
HEC-MES, focusing on the current research status of the production,
compression, storage, transportation, and application links in HEC.
Furthermore, we review technology types of hydrogen energy for planning and
summarize the typical forms of HEC in MESs. Then, the following sections
outline the models and methods for collaborative planning of HEC-MES. They
include detailed analyses of covered sector types, spatial and temporal scopes
of planning, uncertainties, model formulations, and solution methods. Finally,
the paper concludes by summarizing the research gaps identified in current
articles and outlining directions for future research.
