Storage Bi Directional Inverter:
Summary
XYH series energy storage bi-directional converter is the key equipment for energy exchange between energy storage battery components and power grid. It can accept power grid dispatching instructions, realize charging and discharge management of energy storage battery, and realize power grid peak shaving / frequency modulation function. It can monitor the real-time characteristics of load and realize peak shaving and valley filling. At the same time, it can provide reactive power support, make up for voltage defects, control power quality and so on to ensure the stable operation of power grid system. It has the ability to resist short-term impact and can carry completely unbalanced load to realize smooth power supply.
The XYH-PCS / 500 or XYH-PCS / 630 energy storage converter supports two working modes: grid connected and off grid. The grid connected mode can be set to constant power (P / Q), constant DC voltage and constant DC current mode. The off grid mode can be set to VF source as voltage source, and supports online switching between off grid mode and grid connected mode (external hardware support is required). In the grid connected system, the P / Q mode is selected to realize the "peak cutting and valley filling" of power grid load when cooperating with the power grid dispatching system; When constant voltage mode is selected, it can be used as AFE DC voltage source to stabilize DC voltage; When the constant current mode is selected, it can be used as a charger to charge the energy storage battery.
Economical and efficient
Advanced three-level topology, maximum efficiency is 99%, single machine power is 500kW / 630kw
Independent modular architecture and convenient maintenance
Small volume size and low initial investment
Modular sales, integrated advantage sharing
Safe and reliable
Integrated EMS, battery maintenance function, active energy regulation and extended battery life
It has the function of low voltage and high voltage ride through, and has strong adaptability to the power grid
It has anti-island protection to ensure the safe operation of power grid
It has many types of protection, which can help to prevent overcurrent, over-temperature, overvoltage, overload, short circuit, lightning, grounding and so on.
Intelligent and friendly
Fast power response, ± 100% charge & discharge conversion 20ms, faster scheduling
Short communication link time and various choices
It supports the integration of RS485, Ethernet, EtherCAT, CAN, ProfiNet and other communication ports
Support IEC61850 protocol and optical fiber communication
It has VSG, VF, PQ, black start and other functions
Technical parameter： | Parameter table | SX500KS | SX630KS |
| DC side parameters |
| Maximum DC power(kW) | 560kW | 693kW |
| Maximum voltage of DC bus (V) | 1000V | 1000V |
| Maximum current at DC side (A) | 948A | 1195A |
| DC voltage operating range (V) | 550～1000V | 550～1000V |
| DC voltage ripple coefficient (%) | <2% | <2% |
| AC side parameters (grid connection) |
| Rated power (kW) | 500kW | 630kW |
| Maximum output power (kW) | 550kW | 693kW |
| Rated output current | 760A | 957A |
| Maximum output current | 912A | 1148A |
| Rated grid voltage (V) | Three phase three wire | Three phase three wire |
| Allowable grid voltage (V) | -15%～10% or 323V-418V | -15%～10% or 323V-418V |
| Rated grid frequency (Hz) | 50Hz/60Hz（±2Hz） | 50Hz/60Hz（±2Hz） |
| Current total harmonic distortion rate (%) | <3%（Rated power） | <3%（Rated power） |
| Power factor | >0.98(leading or lagging) | >0.98(leading or lagging) |
| Charge discharge conversion time (ms) | <20ms | <20ms |
| AC side (off grid) |
| Voltage unbalance (V) | 400V±3% | 400V±3% |
| Voltage unbalance (%) | <2%, short-term 4% | <2%, short-term 4% |
| Voltage total harmonic distortion rate (%) | ＜3%( Linear load) | ＜3%( Linear load) |
| Maximum reachable efficiency (Hz) | 50Hz/60Hz | 50Hz/60Hz |
| System |
| Maximum reachable efficiency | 99% | 99% |
| Overload capacity | 1.1 times long term, 1.2 times 1 minute | 1.1 times long term 1.2 times 1 minute |
| Allowable ambient temperature (℃) | -25 ℃～+65 ℃（Derating is required when the temperature exceeds 55 ℃） | -25 ℃～+65 ℃（Derating is required when the temperature exceeds 55 ℃） |
| Allowable relative humidity (%) | 0～95%，No condensation | 0～95%，No condensation |
| Maximum working altitude | 5000 m (>3000 m Derating) | 5000 m (>3000 m Derating) |
| Overall size width× high × deep (mm) | 693*1590*601 | 693*1590*601 |
| Machine weight (kg) | 550kg | 550kg |
| Degree of protection | IP20 | IP20 |
| Cooling mode | Forced air cooling | Forced air cooling |
| Display and communication |
| Communication interface | RS485, Ethernet, EtherCAT,CAN | RS485, Ethernet, EtherCAT,CAN |
| Interface | HMI | HMI |
| Communication protocol | MODBUS-RTU /MODBUS-TCP/CAN2.0B | MODBUS-RTU /MODBUS-TCP/CAN2.0B |
