Development of a Control Hardware in the Loop (CHIL) Method for Shipboard Power System Control Verification Validation

摘要

A Shipboard Electric Plant Management and Control System (EPMCS) has been successfully designed, built and deployed on US Navy diesel and steam powered electric generation ships. The EPMCS is a power management system that provides shipboard electric plant stability and automation to optimize operator control and maintenance. The EPMCS integrates flexible load sharing modes, adaptive load-shedding capability, automated operational sequencing, and multiple control dynamics group settings to the operational profile of the prime mover. Validation and Verification (V&V) of the EPMCS is implemented using software-based simulation prior to installation. This process has successfully reduced risk to date when applied to contemporary power generation technology throughout the US Navy. To incorporate modern and future industry power system technology the use of Control-Hardware-in-the-Loop (CHIL) is proposed. CHIL is a technical methodology that applies actual control hardware against a high fidelity modelled plant which is executed on a real time computing platform. This test methodology provides an additional level of assurance and enables affordable, rapid prototyping when the complexities of plant controller, machinery, or load alterations, throughout the lifecycle of the ship, require additional proof-of-concept testing. As complex load demands on all-electric ships are introduced, electric plant stability and power quality are increasingly critical to maintain the shipboard electric plant interface requirements. Future electric plant controls must include support of high energy and high power stochastic pulse loading as well as re-configurable smart shipboard microgrid. The advantage of this approach is that risk can be reduced without the necessity of any full-size power plant apparatus or risk of prototyping on an in-service platform. It significantly reduces risks of new development in the early stages of development. It can also be adapted to provide a realistic power system training environment for shipboard electric plant operators. The CHIL system must be flexible enough to adapt to multiple target hulls without significant re-engineering of the physical interface. The challenges include the development of scalable stimulation interface to satisfy I/O counts and interface protocol latency and the development of a high fidelity complex model that replicates the physical platform. This paper outlines a comprehensive solution leveraging state of the art dynamic modeling techniques and an integrated hardware approach to provide electric plant emulation for shipboard power system validation and verification. This paper presents a development roadmap using control hardware in the loop methodology to create a flexible platform to host a shipboard electric plant for the EPMCS controller performance validation.