Audited Supplier
DFDL23-LY3102
Two Years
Two Years
Linkelec
Made in China
Product Description
Distributed power access unit protocol converter
1.Product profileIn recent years, with the continuous integration of distributed photovoltaic systems on residential rooftops, the randomness, intermittency, and decentralization of distributed photovoltaic systems have posed challenges to power grid dispatch and management. To ensure the safe and stable operation of the power grid and accurately grasp the data of photovoltaic power generation, we have launched the "Four Possible" product solution. Power grid dispatch can analyze users' electricity load situation through big data, adjust the output capacity of photovoltaic inverters, and enhance the on-site consumption capacity of new energy.
This product is developed using modern digital communication technology, computer software and hardware technology, low-voltage power line carrier technology, etc. The downlink communicates with the inverter through RS485 serial port, and the uplink supports carrier dual-mode communication to upload data to the dispatch platform, achieving the "four capabilities" function for distributed new energy equipment.
This product has excellent electromagnetic compatibility performance, a wide temperature adaptability range, and a wide voltage adaptability range. The converter housing is made of ABS flame-retardant material, with a rail type structural design, which is lightweight, easy to install, supports multiple types of interfaces, and is compatible with multiple protocols. It has been tested by a third-party authoritative organization.
The four meanings are observable, measurable, adjustable, and controllable.
1) Observable: Achieve the acquisition of voltage, current, power, and power generation data for low-voltage user photovoltaic power plants;
2) Measurable: Integrating high-frequency collected data, such as user profiles and external meteorological data, to construct user power generation prediction and abnormal operation analysis
Analysis and violation of electricity monitoring model;
3) Adjustable: When distributed photovoltaics affect the power quality and safe use of electricity in the substation area, it can adjust the AC active output of the photovoltaic inverter
Perform flexible control;
4) Controllable: When photovoltaic power generation threatens the safe operation of the power grid, the main station can remotely disconnect to ensure the stability of the power grid.
2.Technical indicators
| Data classification | Data item | Data subitem | Acquisition frequency |
| Running class | voltage | Phase a voltage | On demand acquisition |
| B phase voltage | |||
| C phase voltage | |||
| electric current | A phase current | ||
| B phase current | |||
| C phase current | |||
| active power | Current total active power | ||
| wattless power | Current total reactive power | ||
| Power factor | Power factor | ||
| Active power control ratio | Active power control ratio | ||
| Reactive power control ratio | Reactive power control ratio | ||
| DC side voltage | DC side voltage | ||
| DC side current | DC side current | ||
| State class | Inverter temperature | Inverter temperature | On demand acquisition |
| Communication status | Communication status between distributed power access unit and inverter | ||
| Inverter operation state | On-off state of inverter | ||
| Inverter fault state | malfunction | ||
| Remote operation and maintenance | Remote operation and maintenance | ||
| Statistical class | Total grid-connected operation time | Total grid-connected operation time | On demand acquisition |
| Daily power generation | Daily power generation | ||
| annual energy output | annual energy output | ||
| parameter | Basic information of inverter/distributed power supply access unit | mailing address | On demand acquisition |
| user account | |||
| Number of virtual power plant | |||
| Rated active power | |||
| Maximum active power | |||
| Maximum reactive power | |||
| Maximum apparent power | |||
| type of output | |||
| control model | Active power control mode | On demand acquisition | |
| Reactive power control mode | |||
| Photovoltaic module data (kWp) | Installed capacity | ||
| user type | Full/spontaneous surplus, energy storage and charging pile | ||
| Adjustable and controllable | Adjustable and controllable | ||
| Control class | Inverter control | Inverter switch | Active distribution |
| Remote control enable | Remote control enable | Active distribution on demand (mode 1: group control; mode 2: single control (with address)) | |
| Data freezing | Data freezing | ||
| initialization | initialization | ||
| Control mode | Active power setting value | ||
| Active power percentage | |||
| Reactive power setpoint | |||
| Reactive power percentage | |||
| Reactive power percentage regulation | |||
| Power factor control |
3.Main parameter
| test item | grade | experimental value | Test loop |
| Voltage sag and short-time interruption | -- | 3000:1(60%),50:1,1:1 | complete built unit |
| Power frequency magnetic field immunity | -- | 400 A/m | complete built unit |
| Radiation immunity of radio frequency electromagnetic field | 3 | 10 V/m(80 MHz~1000 MHz) | complete built unit |
| 4 | 30 V/m(1.4 GHz~2 GHz) | complete built unit | |
| Immunity to conducted disturbance induced by RF field | 3 | 10V (unmodulated) | Power supply circuit |
| Electrostatic discharge immunity | 4 | 8kV, direct and indirect | shell |
| Electrical fast transient immunity | 3 | 1.0kV (coupling) | Communication line |
| 4 | 4.0 kV | Power supply circuit | |
| Surge immunity | 4 | 4.0 kV (common mode) | Power supply circuit |
| 2.0 kV (differential mode) | |||
| Immunity of damped oscillation wave | 4 | 2.5 kV (common mode) | Power supply circuit |
| 1.25 kV (differential mode) | |||
| Radio interference suppression | B | - | complete built unit |
4.Product installation and schematic diagram
5.About our service * We could provide 7* 24-hour phone call after-sales service.
* We provide a 2-year guarantee time and will change the meter for you within 1 year if there's something wrong with the product. Except for natural disasters or man-made reasons.
* Recommend the most advanced application technology and management model in the industry to customers, and provide customers with detailed solutions.
6.Package and ship
