Abstract
In order to expand the simulation scale of smart substation, a simulation model of the inlet-outlet line unit, as described by the 0/108 S conductance for multivalued coefficients pre-storage is presented in this paper. As a part of orders decomposition, the address conversion circuit for multivalued coefficients can reduce the computational burden of processing elements. For the convenience of the generalization of the real-time digital solver based on FPGA (FRTDS, FPGA: Field–Programmable Gate Array), the address conversion circuit for multivalued coefficients is matched with the guide word, the formation module of sampled value (SV) packet, and the resolution module of generic object oriented substation event (GOOSE) packet are associated with the application identification (APPID) in the Ethernet frame. The address conversion circuit for multivalued coefficients, the formation module of SV packet, and the resolution module of GOOSE packet are reconstructed via the orders. A hardware-in-the-loop real-time simulation platform for smart substation is built based on the novel FRTDS. A case is given to demonstrate the simulation calculating capability and the hardware-in-the-loop ability of the novel FRTDS.
Highlights
As the trend of power grid, smart grid has penetrated into power generation, transmission, transformation, distribution, consumption, scheduling, and communication
The traditional current transformers and circuit breakers are replaced by the new electronic current transformers and smart circuit breakers, the secondary circuit cable connection is replaced by the high-speed Ethernet communication
real-time digital simulator (RTDS) and its giga-transceiver network communication (GTNET) card are used to study the transmission of packets in the smart substation in [6], which realizes the closed loop test of the digital relay protection device
Summary
As the trend of power grid, smart grid has penetrated into power generation, transmission, transformation, distribution, consumption, scheduling, and communication. The signal concurrency of the multi-channel merging unit and the simulation synchronization of analog and digital quantity are solved in [7], which realizes the closed loop test of the operation monitoring devices The core of these real-time simulation platforms. The establishment of a large-scale hardware-in-the-loop real-time simulation system for the smart substation based on RTDS or DDRTS requires huge amounts of funding, so it is difficult to promote these real-time simulation platforms to the general research institutions and colleges, let alone to the technical training in the power department. The equivalent model of the inlet-outlet line unit is established, which can reduce the scale of the substation real-time simulation and improve the simulation speed by pre-storing the equivalent conductivity and voltage coefficients.
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