Source-Grid-Load-Storage (SGLS)

Source-Grid-Load-Storage (SGLS) is a novel coordinated operational model for energy and power systems. It aims to build a flexible, efficient, and clean modern power system by integrating energy production, transmission, consumption, and storage. This concept represents a key solution to challenges such as large-scale renewable energy integration and dynamic power supply-demand balance amid the global energy transition.

Core Components

1. Source (Power Generation)

   • Refers to power producers, including conventional sources (thermal, hydro, nuclear) and renewables (wind, solar, biomass).

   • Trend: Increasing share of renewables, emphasizing "multi-energy complementarity" (e.g., integrated wind-solar-storage) to reduce carbon emissions.

2. Grid (Power Network)

   • Covers transmission/distribution networks and smart dispatch systems.

   • Core task: Enable efficient power delivery, dynamic regulation, and cross-regional resource optimization, adapting to renewable intermittency.

3. Load (Power Consumption)

   • Includes industrial, commercial, residential users, and new loads like electric vehicles.

   • Key shift: Transition from "rigid loads" to "flexible loads," actively participating in grid regulation via demand response (DR).

4. Storage (Energy Storage)

   • Technologies include physical storage (pumped hydro), electrochemical storage (lithium-ion batteries), and hydrogen storage.

   • Core role: Smooth renewable fluctuations, shift peak loads, provide backup capacity, and enhance system flexibility.

Coordination Mechanisms

Deep synergy enabled by digitalization and smart technologies:

1. Source-Load Interaction

   • Coordinated forecasting of renewable output and load demand to optimize generation scheduling.

   • Example: Guiding EV charging during peak solar generation.

2. Grid-Storage Synergy

   • Storage supports grid frequency/voltage regulation, relieves congestion, and improves stability.

   • Example: Rapid power backup during grid faults.

3. Load-Storage Coordination

   • User-side storage and flexible loads participate in electricity markets or demand response.

   • Example: Factories charge storage during low-price periods and discharge during peaks to cut costs.

4. System-Wide Optimization

   • Technologies like virtual power plants (VPPs) and energy internet aggregate distributed resources for cross-regional SGLS coordination.

Key Significance

1. Boosts Renewable Integration

   • Reduces wind/solar curtailment and increases renewable penetration via storage and flexible loads.

2. Enhances Grid Resilience

   • Ensures reliability during extreme weather or load surges.

3. Reduces Energy Costs

   • Optimizes resource allocation, decreases fossil fuel reliance, and enables market efficiency.

4. Supports "Dual Carbon" Goals

   • Accelerates clean, low-carbon energy transition for carbon neutrality.

Application Scenarios

• Microgrids: Campus-level SGLS integration for local self-balancing.

• Virtual Power Plants (VPPs): Aggregate distributed resources for grid dispatch.

• Integrated Energy Systems: Couple electricity, heat, and gas for higher efficiency.

SGLS facilitates a paradigm shift from "generation-following-load" to "source-load interaction" through technological convergence and institutional innovation. It serves as the core framework for building new power systems and a critical pathway for global energy transition.

Would you like details on a specific application for energy storage device? sales@yt-electric.com