Smart Energy Converter Station

Grid‑connected power generation, energy storage, peak‑shaving and valley‑filling, power supply, charging, energy conservation, voltage transformation, power conversion, electrolysis, grid harmonic mitigation, reactive power compensation, suppression of three‑phase unbalance loads, ride‑through capability, and uninterruptible power supply functions.

The functions implemented by this product are:

Grid‑connected power generation, energy storage, peak‑shaving and valley‑filling, power supply, charging, energy conservation, voltage transformation, power conversion, electrolysis, grid harmonic mitigation, reactive power compensation, suppression of three‑phase unbalance, ride‑through capability, and uninterruptible power supply functions.

Application scenarios:

1、 “ Source, Grid, Storage, Load ” Integrated energy base,

2 , New Energy Hydrogen Production Base

3 , Carbon Dioxide Recovery and Electrolysis Facility

4 , Photovoltaic Energy Storage Charging Station

5 Offshore wind and photovoltaic electrolysis hydrogen production platform

6 , High-energy-consumption smart manufacturing enterprise

7 , desalination bases, etc.

Introduction:

Smart Energy Integrated Box-Type Converter Substation, Employing four-quadrant bidirectional power conversion technology, it integrates multiple control strategies and enables seamless switching among various operating modes. This solution addresses energy conversion and integration across grid‑connected systems, photovoltaic arrays, wind farms, and energy storage systems, while ensuring uninterrupted power supply to loads and tackling a range of challenges, including grid‑side current and voltage harmonic mitigation, reactive power compensation, suppression of three‑phase load imbalances, and ride‑through capability. With advantages such as centralized power supply, ease of maintenance, cost‑effectiveness, and robust reliability, coupled with a versatile array of optional functions and multi‑purpose capabilities, it significantly enhances operational convenience and conversion efficiency, while reducing capital investment and equipment operating costs.

The electrical functions and performance specifications of the smart energy integrated box-type converter substation are described in detail as follows:

1. Power supply mode:

There is an input AC power purification supply mode (referred to as utility mode) and photovoltaic. / The new‑energy power supply mode of wind power, the energy‑storage battery power supply mode (hereinafter referred to as the “battery mode”), and the direct grid‑connected AC power supply mode (hereinafter referred to as the “bypass mode”) / Maintenance mode), a total of 4 A type of pattern.

1. When photovoltaic / The electrical parameters of the wind‑power supply remain within their rated ranges; regardless of whether the grid power or the battery bank is functioning normally, the system operates in a renewable‑energy‑priority mode, with any surplus energy either stored in the energy‑storage battery bank or fed back to the grid.
2. When photovoltaic / When the wind power supply is abnormal and falls within the peak‑demand tariff period, the system operates in battery‑priority mode regardless of whether the grid power is normal.
3. When electricity prices are at their lowest, prioritize the use of photovoltaic power. / Wind power charges the energy storage battery pack, while photovoltaic… / When the wind power supply is abnormal, grid power is used to charge the energy storage battery pack.
4. When the converter is in a fault condition that prevents it from operating, the maintenance switch is closed, and the system operates in bypass mode. / Maintenance mode;
5. When utility power is normal, regardless of the operating mode, it provides harmonic mitigation for the grid, reactive power compensation, and suppression of three-phase unbalanced loads, DVR All functions are in priority operation mode;

2. Function:

1. Functions of new energy power supply:

It enables the conversion of electrical energy generated from new renewable sources such as photovoltaic and wind power into stable, controllable, high‑quality AC power, which can be supplied to loads or fed back into the grid.

2. Energy storage and its function of smoothing peak loads and filling valleys in the power grid:

By regulating users’ load profiles through the charging and discharging of energy storage systems, it helps flatten the grid’s peak‑valley load curve and delivers economic benefits to consumers.

3. Anti-voltage-sag ( DVR ) Function:

When utility power is normal, the converter provides voltage sag ride‑through capability for a duration of 1S~6S ；

4. Uninterruptible Power Supply Function:

When the device switches between modes, the load remains continuously powered, and the duration during which the output voltage transiently exceeds its rated range. ≤4mS；

5. Automatic reactive power compensation function:

When utility power is normal, the device automatically adjusts the input power factor on the AC input side, achieving a specified reactive power compensation rate. ≥95%；

6. Automatic APF Function:

When utility power is normal, the device automatically and dynamically tracks and compensates for current harmonics on the AC input side, with a harmonic compensation rate of… ≥0.95% ；

7. Three-phase load imbalance suppression function:

When utility power is normal, automatic unbalance compensation is applied to the AC input current of the device; under sufficient capacity conditions, the post-compensation current unbalance is kept below. 3%；

8. Battery management functions:

Perform battery management on the energy storage battery pack to achieve ABM Charging;