| TRANSFORMER DIFFERENTIAL PROTECTION DEVICE | |
| 2024-05-21 | |
| 专利权人 | EKRA LLC (EKRA-Soviet Institute) |
| 申请日期 | 2024-05-21 |
| 专利号 | RU2829990-C1 |
| 成果简介 | NOVELTY - Invention relates to electrical engineering and power engineering and can be used at power plants and substations of electric power systems to ensure correct operation of transformer differential protection devices (TDP) in transient modes accompanied by saturation of magnetic conductors of current transformers (CT). Result of the claimed invention is achieved by a device for differential protection of transformers, comprising a generator of effective values of differential and braking signals, as well as instantaneous values of said signals, differential current cutoff, sensitive current element, made with possibility of comparison of effective values of the first harmonic of differential and braking signals, blocking element at external short-circuits, differential-phase and output elements. Differential-phase element is made with possibility to compare by phase of each of vectors of the first harmonic of secondary currents of current transformers, moduli of which exceed the specified value, with the vector of the first harmonic of the secondary current of the current transformer, having the greatest modulus. Output element consists of first and second logical elements AND, as well as logical element OR, wherein to the direct input of the first logical element AND the is connected the output of the sensitive current element, and the output of the blocking element is connected to the inverse input during external short-circuiting, to the direct inputs of the second logical element AND the outputs of the blocking element and the differential threshold element are connected, and to the inverse input of the second logic element AND the output of the differential-phase element is connected, wherein outputs of differential current cutoff, first and second logic elements AND are connected to inputs of logic element OR. USE - Electrical engineering; electric power industry. ADVANTAGE - Faster action of TDP at transition of external short circuit to protection coverage area. 1 cl, 3 dwg |
| IPC 分类号 | H02H-007/045 |
| 国家 | 俄罗斯 |
| 专业领域 | 能源矿产 |
| 语种 | 英语 |
| 成果类型 | 专利 |
| 文献类型 | 科技成果 |
| 条目标识符 | http://119.78.100.226:8889/handle/3KE4DYBR/16686 |
| 专题 | 中国科学院新疆生态与地理研究所 |
| 作者单位 | EKRA LLC (EKRA-Soviet Institute) |
| 推荐引用方式 GB/T 7714 | DONI N A,SHURUPOV A A,PETROV D S,et al. TRANSFORMER DIFFERENTIAL PROTECTION DEVICE. RU2829990-C1[P]. 2024. |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论