2023-01-23-IEC-以可再生能源为主的零碳电力系统（英）_90页_1016kb

Zero Carbon Power System White Paper Summary

Introduction

The Intergovernmental Panel on Climate Change (IPCC) has unequivocally stated that human activities have warmed the atmosphere, ocean, and land, and that this warming is already affecting many weather and climate extremes globally. The stabilization of greenhouse gas concentrations requires a fundamental transformation of the energy supply system. This electricity sector, which accounts for approximately 40% of global energy-related emissions, is a key component of reducing these greenhouse gas emissions [1].

Countries are increasingly committed to net zero carbon emissions. Over 130 nations have pledged to achieve net zero by 2050 or later, with policies driving the shift to renewable energies like solar, wind, and storage. This transition presents significant challenges to power systems, including managing demand, ensuring reliability, and maintaining affordability [2, 3].

This paper explores the concept of net zero power systems, the necessary technological and operational changes, and the role of international standards in facilitating this transition. It highlights challenges such as the phasing out of fossil fuels, the integration of variable renewable energy (VRE) sources, and the need for energy storage solutions [4].

Characteristics of a Zero Carbon Power System

A zero carbon power system relies heavily on renewable energy sources like wind and solar, supplemented by storage solutions such as batteries or pumped-hydro. It requires:

1. High Deployment of Renewables: Wind and solar will be the backbone, likely comprising a majority of electricity generation.
2. Increased Power Electronics: More control systems using power electronics are needed, reducing traditional system inertia and requiring synthetic inertia from devices like batteries.
3. Digitalization: Advanced sensors, AI, and control systems are essential for managing dynamic loads, forecasting, and grid stability.
4. Decentralization: Generation and storage are likely to shift closer to load centers, reducing the need for long-distance transmission.

These systems face challenges including managing highly variable generation, maintaining grid stability, and ensuring affordable and reliable power [5].

Driving Factors and Market Needs

Worldwide commitments to net zero emissions are accelerating the transition. Key drivers include:

1. Climate Change: Recognition of climate impacts and the need for urgent action.
2. Policy Incentives: Regulations, renewable portfolio standards, and carbon pricing are shaping the market [6].
3. Technological Costs: Renewables are becoming cost-competitive globally (e.g., BNEF data shows solar and wind cheaper than new coal/gas in many regions) [7].

However, the transition must also address the risks of climate catastrophy, inequality, and ensure the affordability and reliability of energy. Demand-side measures like energy efficiency and electrification, often facilitated by standards, are crucial complements to renewable deployment [8].

Technology Challenges

Key technologies needing development include:

1. New Generation: Advanced coal tech (lower emissions), nuclear (SMRs/aSMRs), and hydrogen power [9].
2. Energy Storage: Battery storage is proliferating, but long-duration storage and grid-scale solutions are needed. Costs are decreasing, but sustainability concerns (e.g., lithium mining, battery lifespan) persist [10].
3. Transmission/Distribution: Grid modernization, HVDC links, smart sensors, edge computing, and advanced control systems (AI/ML-based) [11].

Challenges include system complexity, cybersecurity threats, lack of skilled personnel, initial high costs (especially for CCUS), and new business models [12].

Standards and Regulation

New standards are essential for interoperability, safety, grid integration, and market design. Key areas include:

1. Grid Codes: Updating standards for fault ride-through, reactive power support, and synthetic inertia.
2. Component Control: Harmonizing control protocols for distributed resources (EVs, batteries, heat pumps).
3. Cybersecurity: Protecting critical power infrastructure.
4. Carbon Accounting: Measuring emissions from V2G, hydrogen, and other technologies [13].

Conclusions and Recommendations

The journey to net zero is underway, bringing profound changes. Standardization and regulatory frameworks must evolve rapidly to guide this transition. Recommendations include:

1. Governments/Industry: Increase support for roadmaps, harmonious standards, and accelerated development of new standards.
2. Standards Organizations: Adopt a top-down, systems approach to standardization, foster cross-disciplinary dialogue, and develop high-level requirements before focusing on individual components. Prioritize cybersecurity measures [14].

This transition poses significant technical, economic, and social challenges. Understanding these changes, embracing new technologies, and developing robust standards are critical for global decarbonization [15].