Joint Robust Expansion Planning of Transmission Network and Communication Network Considering Extreme Scenarios

doi:10.12204/j.issn.1000-7229.2022.10.012

Abstract

Abstract:

In order to meet the economic premise and minimize the risk of large area outages caused by the coupling of failures in power and communication networks in extreme scenarios, this paper proposes a robust extended planning model with two layers (main layer and sub-layer) of cyber-physical cooperation, taking into account the structural convergence and functional coupling characteristics of the dual network. Firstly, the main-layer model for cooperative optimization of dual-network line and communication service routing is established with the objectives of economy and minimum loss of load under extreme scenarios; in the sub-layer model, the multiple fault sets of power/communication lines are constructed taking into account the common cause failure modes caused by line structure coupling, and the impact of communication failure on the emergency dispatch of power system is considered, and the calculation model of minimum loss of load under the worst extreme scenarios is established based on the max-min criterion. Then, the column and constraint generation algorithm is used to decouple the two-layer model. Finally, simulation analysis is conducted on the basis of IEEE 14-node information physical system. The results show that the collaborative planning model proposed in this paper can optimize the dual-network structure with economical and reasonable investment, reduce the impact of fault cascade in communication system, and improve the resistance of the coupled system to face extreme events.

Key words: electric cyber-physical system, extreme scenarios, joint expansion planning, robust optimization

CLC Number:

TM73

ZHANG Yiwei, LIU Wenxia, ZHANG Shuai, WAN Haiyang, HUANG Shaofeng. Joint Robust Expansion Planning of Transmission Network and Communication Network Considering Extreme Scenarios[J]. ELECTRIC POWER CONSTRUCTION, 2022, 43(10): 121-135.

Figures/Tables 18

Fig.1 Typical structure of electric cyber-physical system

Fig.2 Framework of TCCRP model

Fig.3 Formulation process of emergency dispatch strategy

Fig.4 Process of the model based on the C&CG

Fig.5 Topology of IEEE 14-node power and communication network

Table 1 Simulation results under N-3 failure scenarios of plan 1 and plan 2

Fig.6 Collaborative planning topology and the worst extreme scenarios

Fig.7 Independently planning grid structure and the worst extreme scenario

Fig.8 Collaborative planning topology and the worst extreme scenarios while umax=2

Table 2 TCCRP simulation results under different maximum of damaged lines

Fig.9 Comparison of failure consequences in general scenarios while umax=3

Table B1 Expandable power lines in IEEE 14-node ECPS

Table B2 Parameters of expandable communication lines in IEEE 14-node ECPS

Table B3 Table B3 24-hour load distribution

Table B4 The cost factor of generators

Table C1 Routing distribution of scheme 1

Table C2 Table C2 Routing distribution of scheme 2

Table C3 Table C3 Routing distribution while umax=2

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