Renewable energy has gradually increased its investment and penetration due to technology innovation cost reduction, turning power system expansion planning problem (SEP) into a complex task. Under this circumstance, paper presents long-term distributionally robust optimization (DRO) based model for systems, which minimizes the total operation costs along with expected penalty of load shedding wind curtailment, while considering uncertainties from data-driven ambiguity set. Besides...

This paper proposes a distributionally robust chance-constrained (DRCC) model for the clustered generation expansion planning (CGEP) of power systems. The proposed two-stage minimizes first-stage total cost along with second-stage expected penalty worst-case probability distribution renewable energy generation. A unit commitment flexibility constraints is embedded into model, and uncertainty modeled via Wasserstein distance (WD)-based ambiguity set. Demand-side resources (DSR) concentrating...

With the rapid development of Earth observation, remote sensing and geographical information system, people can obtain massive spatial data. The data use is not yet limited to a local area, which gradually expands whole earth. Growth in amount makes how manage global supply user efficient retrieval service becoming key issue for academic community. This thesis proposes index method based on GeoSOT discrete grid system. We code creating identification. Then be managed ordinary one-dimension...

As the power system expands with a more complex network structure, excessive short-circuit current (SCC) has become major obstacle to rapid development of system. The paper proposes SCC-constrained planning model determine optimal locations and sizes fault limiters (FCLs) while considering transmission switching. N-1 security criterion is included ensure that switching off lines will not jeopardize security. One challenge relationship between SCC binary variables associated states activation...

The intensified interdependency of natural gas and electricity systems poses urgent needs new challenges in identifying vulnerable components the interdependent system, which could be significantly different from those individual because interdependency. This paper proposes a method to identify rank gas-electricity systems. Specially, topological model vulnerability index for system are constructed, component identification is put forward select by simultaneously considering functional...

With the expansion of power grid, operation system becomes more and complicated. Key transmission sections play an important role in which can be considered as crucial monitoring subjects to improve efficiency security analysis stability control. This paper proposes identification method for based on results grid partitioning, lays foundation real-time grid. First, key-line indicators are used obtain lines further partition The between subareas obtained tie lines. Second, Karger is applied...

With the development of Earth observation technology, traditional local area research methods are facing great challenges. How to effectively manage and use massive spatial data has become a key issue for academic applied science community. Global discrete grid system divides earth's surface into series different scale regions (grids) according some rules. Based on global system, new multi-scale model can be established. This thesis analyzes current scientific commercial systems, such as...

The increasing interdependency between power system and natural gas systems, making the energy transaction operation conditions of more complicated, threatens security reliability system. Transmission interconnections play a crucial role in propagation major disturbances. Understanding impact on transmission is important for enhancing monitoring taking appropriate actions. This paper proposes identification method considering criticality index constructed to rank critical lines consisting by...

The expansion of the power network and integration wind farms pose challenges in short-circuit current (SCC) problem. Transmission switching performs better both flexibility effectiveness compared with other SCC restriction measures, while grid security would be threatened as number switched-off-lines increases. This paper proposes a day-ahead scheduling model considering commitment units N-1 criterion, to avoid excessive problem caused by integration. Specially, calculation grid-connected...

Abstract The decommissioning and overall relocation of urban industrial enterprises have generated a large number decommissioned contaminated sites, the leftover soil pollution is gradually becoming major problem that restricts green development damages human health. Deep mining efficient management site information through digitization informatization are needed to solve these problems more accurately efficiently. Knowledge mapping for visual analysis relevant pathways forward‐looking...

With the exhaustion of non-renewable energy and increasing demands around world, penetration renewable has gradually increased. However, due to strong uncertainty wind generation insufficient capacity power system adopt generation, phenomenon curtailment occurs frequently. Therefore, in order improve accommodation ability system, an optimal scheduling model was proposed minimize total operation cost integrated gas-electric considering power. The described by expansion formulation sample...

The paper presents three different approaches for development of aggregated load area models (ALAM) in power systems. Among the three, first one is Voltage-Two-Step (VTS) approach, which identifies ALAM parameters based on a Voltage-Match scheme implemented two steps. second Current-Two-Step (CTS) approach. Similar to VTS, this approach Current-Match realized Direct-One-Step (DOS) third one. It Bus-Match step. Theoretical explanation and analysis these are reported simulation studies were...

With the rapid development of earth observation, remote sensing and geographic information system technology, human can achieve a huge sum spatial data. Spatial data distribution is main aspect services. One contradictions that current limited network bandwidth cannot meet request for achieving realtime space Global Subdivision proposed new theory division organization. The patches in subdivision grids have similar size cover globe isotropic seamlessly. Every patch's identification contains...