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新型电力系统下海南电网煤电安全可靠保障研究

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新型电力系统下海南电网煤电安全可靠保障研究

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Research on safety and reliability guarantee of coal-fired power units in Hainan power grid under the new power system

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doi: 10.19666/j.rlfd.202605111

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【目的】针对海南海岛独立电网高新能源渗透率、核电基荷刚性强且不再新增煤电的约束条件，研究存量煤电的功能转型模式，明确机组技术标准，构建适配海岛电网的低碳灵活转型体系与安全支撑方案。

【方法】结合海南电网电源结构、负荷特性、网架条件与调峰调频平衡结果，明确煤电在新型电力系统中的功能定位与技术要求，构建热电解耦、深度调峰、储能耦合、智慧运行、新能源耦合、低碳发展六大技术路径，提出煤电对海南电网频率稳定、电压稳定、新能源消纳、应急保供、跨区域互济的安全可靠支撑策略，并结合电力现货市场开展收益分析。

【结果】 研究表明：2025 年海南全社会用电量 544.73 亿 kW·h，同比增长 4.97%；预计 2027 年全省调峰最大缺口将达 183 万 kW。煤电经灵活性改造后，最小技术出力可降至 25%额定负荷以下。

【结论】依托容量电价、现货市场与辅助服务机制，改造后的煤电能够实现安全、低碳、经济协同发展。形成的技术体系、支撑策略与运行方案，可为海南新型电力系统示范建设、煤电转型提质及同类海岛电网安全运行提供理论支撑与工程参考。

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[Objective] With the comprehensive implementation of China ’s dual carbon goals and the full -scale construction of modern new power systems, Hainan ’s isolated island power grid has maintained a clean energy installed penetration rate steadily above 87.1%. Large -scale grid integration of onshore and offshore wind power, as well as centralized and distributed photovoltaic power, brings about prominent system challenges: insufficient peak shaving and frequency regulation capacity, continuous decline in system equivalent inerti a, volatile power flow and severe voltage fluctuations. These issues create major hidden risks to the secure, stable and economical operation of the provincial power grid. Restricted by local policies that ban the construction of new coal -fired generating units, existing in-service coal-fired units serve as the only multi-functional supporting power source for Hainan Power Grid. They can provide essential ancillary services including deep peak regulation, fast primary and secondary frequency modulation, dyn amic reactive power and voltage support, emergency spinning reserve, and system black -start capability. Against the backdrop of ultra -high renewable energy penetration, this paper systematically explores feasible flexible retrofitting modes for operational coal-fired units, defines their multi dimensional core functional positioning and quantifiable technical indicators, and constructs a complete low-carbon flexible transformation framework together with targeted grid security support strategies tailored to the unique operating characteristics of isolated island power grids.

[Methods] This study sorts out Hainan ’s current power supply mix, seasonal and diurnal load variation patterns, main grid structure and annual peak-valley balance status. On this basis, it clarifies the technical requirements for retrofitted units and proposes six transformation pathways: thermoelectric decoupling, deep peak -load retrofitting, energy storage coupling, intelligent digital operation upgrading, complementary coordination wit h new energy stations, and low -carbon emission reduction reconstruction. A multi-layer collaborative control strategy is established to mitigate grid operational risks, and the economic performance of retrofitted thermal units is quantitatively analyzed un der the rules of the provincial electricity spot market and auxiliary service market.

[Results] Statistics indicate that Hainan’s total social electricity consumption reached 54.473 billion kW·h in 2025, with a year-on-year growth of 4.97%. Forecasts show the grid’s maximum peak shaving deficit will expand to 1.83 million kW by 2027. Comprehensive flexible retrofits can lower the minimum technical output of coal-fired units to below 25% of their rated capacity.

[Conclusion] When combined with capacity compensation p ricing and standardized auxiliary service trading mechanisms, renovated thermal power assets can achieve coordinated optimization of grid safety operation, low -carbon energy transition and sustainable economic profitability. The research conclusions and tr ansformation pathways provide valuable engineering references for new power system construction in other isolated island power grids with high renewable energy penetration worldwide.

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. 新型电力系统下海南电网煤电安全可靠保障研究. 热力发电, : - . DOI: 10.19666/j.rlfd.202605111

. Research on safety and reliability guarantee of coal-fired power units in Hainan power grid under the new power system[J]. Thermal Power Generation, : - . DOI: 10.19666/j.rlfd.202605111

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doi: 10.19666/j.rlfd.202605111

首发时间：2026-09-03

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2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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