BWG储能并网柜

概述 Overview

光伏储能并网柜是集成断路器、保护装置、电能计量、通信模块等部件的成套设备，核心作用是实现光伏与储能系统的电能双向灵活调度，既让光伏电能安全馈入电网，又能在电网故障时快速切换至离网模式保障负载供电，是 “光储一体化” 系统并网的关键枢纽，同时具备故障隔离、数据采集与远程运维能力，提升系统整体可靠性与经济性。它可与储能变流器（PCS）、能量管理系统（EMS）、电池管理系统（BMS）协同，适配 0.4kV 低压并网等主流场景，满足自发自用、余电上网、峰谷套利等多种运行需求。

The photovoltaic energy storage grid-connected cabinet is a complete set of equipment integrating components such as circuit breakers, protection devices, power meters, and communication modules. Its core function is to achieve flexible, bidirectional dispatch of electricity between photovoltaic and energy storage systems, ensuring that photovoltaic power is safely fed into the grid while quickly switching to off-grid mode to supply loads during grid faults. It serves as a key hub for grid connection in a "photovoltaic-storage integrated" system, while also providing fault isolation, data collection, and remote operation and maintenance capabilities, enhancing overall system reliability and economic efficiency. It can coordinate with energy storage converters (PCS), energy management systems (EMS), and battery management systems (BMS), and is suitable for mainstream scenarios such as 0.4kV low-voltage grid connection, meeting various operational needs including self-consumption, surplus power feed-in, and peak-valley arbitrage.

功能及特点 Functions and features

1.双向电能管控：作为电能双向流动的“ 闸门”，并网断路器实现光伏馈网、电网补电、储能充放电的切换控制，配合电能表精准计量双向电量，支持峰谷电价差套利，降低用电成本。

2. 多重安全防护

• 防孤岛保护：主动 / 被动检测电网失压，0.2 秒内快速分闸，防止孤岛运行引发安全事故，符合 IEEE 1547、GB/T 19964 等标准。

• 电气故障保护：具备过流、过压、欠压、失压分闸、检有压合闸、防逆流、短路、防雷等保护功能，内置浪涌保护器(SPD)，毫秒级响应切断故障回路。

• 电能质量保障：集成谐波治理、无功补偿模块，实时监测并优化电压、频率、三相平衡度，并网电能符合 GB/T 14549 标准，降低电网罚款风险。

3. 智能运行与调度

• 并离网无缝切换：支持主动 / 被动切换，切换时间可小于 10ms，保障关键负载持续供电。

• 能量协同控制：与 EMS、BMS 联动，动态调节充放电功率，平抑光伏出力波动，化消纳清洁能源。

• 远程监控运维：搭载 4G/5G、Modbus 等通信模块，实时上传电压、电流、电量等数据，支持云端平台远程预警、故障诊断与参数设置，提升运维效率。

4. 灵活适配与高效集成：模块化设计适配不同容量光伏储能系统，支持多机并联与无变压器并网，采用低损耗元器件，交流侧转换效率高，降低能耗，部分产品功率因数可大于 0.99。

1. Two-way Energy Management: Acting as the “gate” for bidirectional energy flow, the grid-connected circuit breaker enables switching control between photovoltaic grid feed-in, grid power supplementation, and energy storage charge/discharge. Combined with energy meters for precise bidirectional energy measurement, it supports peak-valley electricity price arbitrage and reduces electricity costs.

2. Multiple Safety Protections

• Anti-islanding Protection: Actively/passively detects grid voltage loss and trips within 0.2 seconds to prevent safety incidents caused by islanding operation, compliant with standards such as IEEE 1547 and GB/T 19964.

• Electrical Fault Protection: Features overcurrent, overvoltage, undervoltage, loss-of-voltage trip, voltage presence verification on closing, reverse current prevention, short circuit, and lightning protection; built-in surge protection device (SPD) responds in milliseconds to disconnect fault circuits.

• Power Quality Assurance: Integrates harmonic mitigation and reactive power compensation modules, monitors and optimizes voltage, frequency, and three-phase balance in real time, ensuring grid-connected energy meets GB/T 14549 standards and reduces the risk of grid penalties.

3. Intelligent Operation and Scheduling

• Seamless Grid-connected/Off-grid Switching: Supports active/passive switching with switch times under 10 ms, ensuring continuous power supply to critical loads.

• Energy Coordination Control: Works with EMS and BMS to dynamically adjust charge and discharge power, smooth photovoltaic output fluctuations, and maximize clean energy utilization.

• Remote Monitoring and Maintenance: Equipped with 4G/5G, Modbus, and other communication modules to upload voltage, current, and energy data in real time, supports cloud platform remote alerts, fault diagnostics, and parameter settings, improving operation and maintenance efficiency.

4. Flexible Adaptation and Efficient Integration: Modular design adapts to photovoltaic and energy storage systems of different capacities, supports multi-unit parallel connection and transformerless grid connection, utilizes low-loss components for high AC-side conversion efficiency, reducing energy consumption, with some products achieving power factors greater than 0.99.

正常使用条件 Regular service conditions

工作温度: 户内一般 - 5℃～ +55℃，户外宽温型可至 - 25℃～ +60℃，部分产品可适应 - 30℃～ +50℃

相对湿度: ≤ 95% RH( 无凝露)，户内常见≤ 90%(+20℃时)

海拔高度: ≤ 2000m，2000-3000m 需降额使用，3000m 以上需设计

污染等级: ≤ 3 级(GB/T 7251.1-2013)，无强腐蚀、易燃易爆、剧烈振动等环境

Operating Temperature: Indoor: typically -5℃ to 55℃ ; Outdoor wide-temperature type: -25℃ to 60℃ ; some products can operate at -30℃ to 50℃

Relative Humidity: ≤ 95% RH (non-condensing), commonly ≤ 90% indoors (at 20℃ )

Altitude: ≤ 2000m; derating required for 2000-3000m; special design needed above 3000m

Pollution Level: ≤ 3 (GB/T 7251.1-2013), environments without strong corrosion, flammable or explosive conditions, or severe vibrations