Guodian NARI microcomputer protection device DSA2131 bus coupler protection measurement and control device
● NARI DSA2116 transformer protection and monitoring device
The DSA series integrated substation protection and monitoring system is a set of substation integrated automation system that is more technical and more suitable for the construction and transformation of medium and low voltage substations, which is launched by NARI Group, focusing on the technical strength of protection and monitoring for medium and low voltage substations. The system has made some optimization in hardware design, software design, user interface wiring, substation information sharing, communication interface and other aspects. Due to the optimized configuration, the performance price ratio has been improved, so the system is also competitive in the technical and economic comprehensive indicators of small rural transformers and switching stations. The DSA series integrated substation protection and monitoring system adopts a hierarchical and distributed structure design, and supports three different configuration schemes: centralized configuration, decentralized configuration, and local decentralized configuration. Its system functions can meet the requirements of substations with different voltage levels. The DSA series integrated substation protection and monitoring system makes full use of the network communication function, reasonably distributes information, reduces hardware redundancy, and simplifies the secondary circuit. The whole system is divided into three layers: the bay layer, which completes the collection and control of on-site primary equipment; Communication layer, completing the interconnection of intelligent equipment of the whole substation; The local management completes the information classification, management and storage of the whole substation. In the DSA series substation protection and monitoring integrated system, the distributed modular structure is adopted, which makes the system configuration flexible and easy to expand; Strictly consider electromagnetic compatibility and anti-interference measures to enhance the reliability of the system; The application of CAN matching network system based on CAN, which makes the distributed multi CPU system real-time in data transmission; The communication unit with dual redundant configuration is equipped with multiple standard interfaces, and the communication protocol can be configured online to realize the connection with multiple intelligent devices; The complete integrated automatic monitoring system enables the dispatching terminal to remotely monitor the substation, modify the setting of the microcomputer protection device, input or lock the local protection function, signal reset and other operations to achieve voltage and reactive power control, which meets the management requirements of the substation and is suitable for unattended substations. The protection measurement and control unit is directly configured to each distribution bay, which saves a large number of signal lines and control lines, reduces the burden of CT, reduces the workload of design, installation and commissioning, and shortens the commissioning period. DSA series integrated substation protection and monitoring system is an ideal choice for substation integrated automation system.
Guodian NARI DSA2119 line protection measurement and control device
1、 Parameters
AC voltage: 100V, 57.7V
AC current: high, 1A z frequency: 50HZ z DC power supply: 220V, 110V, allowable deviation+15%, - 20% z DC voltage:+5V, ± 12V
Power consumption AC current circuit: when the rated current is high, each phase is not more than 1.0VA, when the rated current is 1A, each phase is not more than 0.5VA AC voltage circuit: when the rated voltage is high, each phase is not more than 0.5VA DC power circuit: normal operation, each protection unit is not more than 20W, and each protection unit is not more than 30W
The DC working voltage is 5V, the allowable deviation is ± 0.15V ± 12V, and the allowable deviation is ± 0.2V. The device is suddenly powered on and powered off, the power supply rises or falls slowly, and the device does not misoperate or send signals by mistake
AC current circuit with load capacity: 2 times rated current, 10 times rated current, 10 seconds rated current, 40 times rated current, 1 second AC voltage circuit: 1.4 times rated voltage, continuous working DC power circuit: 80% - 110% rated voltage, continuous working 2.5 Measuring element precision scale error: no more than ± 2% Temperature error: no more than ± 3% within the working environment temperature range Comprehensive error: no more than ± 5%
Allowable ambient temperature Normal operating temperature: - 10 ℃ - 55 ℃ Limit operating temperature: - 25 ℃ - 60 ℃ Transport and storage temperature: - 40 ℃ - 70 ℃
Guodian NARI DSA2119 line protection measurement and control device
Guodian NARI microcomputer protection device DSA2131 bus coupler protection measurement and control device
