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The fuel management system of power plants is the core of coal management in thermal power plants, of which domestic substitution is a necessary path for the power plant informatization, and the localization of databases is the key. Data migration plays an important role of the handover between the old system and the new one. An optimized data migration scheme is proposed based on a thorough study on data migration methods and the data characteristics of fuel management system in power plants. Focusing on the test study of methods for verifying data consistency, the characteristics of sequential comparison and dichotomy are analyzed, and it is proved that dichotomy has certain performance advantages when the proportion of corrupt data is relatively small and the distribution is concentrated. Enlarging the proportion and decentralizing the distribution, dichotomy costs more time obviously. A data migration tool for plant fuel management system is designed and implemented, which realizes visualization of data verification. The tool supports batch operations for functions like configuring verification rules, setting execution methods and providing feedback on results. It also enriches verification rules, supports customized rules and adds the mechanism for exceptions and so on. Divided into user layer, service layer and data layer, this tool achieves data migration of plant fuel management system.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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