Guandi hydropower station
'Facing the current difficult situation of serious overcapacity of power generation in our country, it is almost the only option for hydropower enterprises to reduce the development speed of hydropower.' Zhang Botting, deputy secretary general of China Hydropower Engineering Society, recently attended the '2017 Sichuan Academic Conference on Hydropower Engineering' Pointed out.
He bluntly said that many enterprises have lost the enthusiasm and financial ability to develop and construct new hydropower stations because of the serious drop-off of water and the drop in the efficiency of enterprises.
This reporter has learned that with the imbalance between power supply and demand in society as a whole, the contradiction between power supply and demand has become increasingly prominent, and the hydropower industry has not had a good time in recent years. Taking Sichuan Province as an example, from 2011 to 2015, Growth plunged to -1.1%, showing the first negative growth in electricity use since 1998. From 2012 to 2016, Sichuan's peak-dumping 'waste water' power was 76, 26, 97, 102 and 142 billion kWh , A total of 44.2 billion kwh of water for four years is equivalent to the whole society's electricity consumption of one and a half months in Hebei Province.
On the surface, large hydropower is the main cause of 'discarding water'.
As a province of thousands of rivers, there are nearly 1,400 large and small rivers in Sichuan, with a theoretical reserves of hydropower resources of 143 million kilowatts, accounting for 21.2% of the national total, of which 103 million kilowatts are technically exploitable, accounting for 27.2% of the national total, Economically developable 76.112 million kilowatts, accounting for 31.9% of the country.
According to Sichuan Provincial Energy Bureau Secretary Lei Kaiping introduced during the meeting, as of the end of 2016, Sichuan Province, hydropower installed capacity exceeded 70 million kilowatts, accounting for 80% of the total installed capacity of the province, accounting for 22.2% of national hydropower installed capacity; hydropower generating capacity accounted for the province 88.3% of generating capacity, accounting for 24.3% of the country's hydropower generation capacity, hydropower installed capacity and power generation both rank first in the country.
'Because of the development of hydropower, the energy consumption structure of Sichuan Province has undergone a historic change.' 'Lei Kaiping said that the proportion of energy consumption in primary energy in Sichuan Province reached 45.8% in 2016, an increase of 25% over 2010 and 26% above the national average Each year, about one third of the electricity is sent to East China, reaching 122.6 billion kilowatt hours last year. From 2013 to 2016, a total of 432 billion kilowatt hours of hydropower was sent out.
However, all hydropower projects are built by national planning and large-scale power generation is not the direct cause of abandoning water.
'Stage of energy supply and demand more obvious contradictions.With the large-scale hydropower construction projects have been put into operation and economic growth under the new normal load slowdown, leading to the emergence of the contradiction between supply and demand in the 13th Five-Year period, the whole society of electricity by 'Eleventh Five-year' average annual growth rate of 10.4%, down to 'five-second' average annual growth rate of 5.4%. 'Lei Kaiping said,' combined with lagging transmission channels, Sichuan Province, the market is increasingly difficult to open up ' Three Five 'to' Fourteen Five 'prophase, the stage of the contradiction between supply and demand of hydropower will continue.
In addition to the above factors, Lei Kaiping also believes that another development of hydropower development in Sichuan is constrained by a coordinated mechanism with the national level has not yet formed, "Renewable Energy Law" made it clear that hydropower is a renewable energy, but in national policy, especially In terms of preferential policies, hydropower was not incorporated in. In addition, the disproportionate mechanism of hydropower dispatching resulted in a difference of about 2,000 hours in the national power and provincial power generation hours.
Many problems, the problem is tricky, Sichuan hydropower in the future but also not to continue to develop and build what issues need to be solved?
Industry experts attending the meeting pointed out that Sichuan Hydropower should first of all do scientific and orderly development, and focus on the development of key reservoirs and regulating power plants in the future, with the capacity of regulation being increased. The data show that the hydropower installed in Sichuan Province has quarterly regulatory performance The proportion of power plants is low, only 36%.
Affected by natural water shortage, the capacity of power plants is only 1/3 of the dry season, so there is an urgent need to increase the policy support of leading hydropower stations, speed up the construction progress of leading hydropower stations and increase the output of dry periods According to Lei Kaiping introduction, with the Lianghekou and Shuangjiangkou hydropower stations put into operation, by the end of the 13th FYP, the ratio of power plants with quarterly adjustment capacity is expected to increase from the existing level to over 42%.
The above industry experts also pointed out that we must optimize the construction program. 'Because the more backward the development of hydropower development more difficult, the more need to coordinate the ecological environment, immigration, etc. In addition, but also from the perspective of the past a high degree of emphasis on construction, turn to attention Hydropower station operation and management.
Hydropower Water Resources Planning and Design Institute, a reluctance to be named by an interview with this reporter said, 'After more than 10 years of intensive development, hydropower in the central and eastern basic development is completed, the major rivers in the southwest have also been built into cascaded power plants, After the multi-cascade hydropower station is completed, it will put on the agenda how to operate and manage it, how to make reasonable dispatch and how to protect the ecological environment.
After editing
Hydropower resources development ranks first in the country, hydropower installed capacity and hydropower generation ranks first in the country, Sichuan is well-deserved China's largest base for hydropower development .However, difficulties in consumption, weak development, but also let Sichuan into the 'tangle' in the development of hydropower.
In recent years, the overcapacity in power industry has caused the problem of "discarding water" in the southwest region and the hydropower industry has plunged into the whole trough. From the 12th Five-Year Plan, 120 million kilowatts of newly-started hydroelectric power projects to 60 million kilowatts of new ones in the 13th Five- Hydropower development has doubled down.As a large hydropower province, Sichuan, while planning the scale of development, promote cascade development, while facing the overcapacity was forced to 'abandon the water', 'crux of the problem' really put in front, more The industry 'heart disease'.
Hydropower is a clean and renewable energy source. Considering the long-term economic and social development of energy demand and environmental protection, hydropower is of great significance to the sustainable development and utilization of our country's energy structure and reducing greenhouse gas emissions. However, at present, the development of the power industry is in a new normal, Weak power demand, inter-provincial barriers, lack of access roads, weak investment and other factors are constraining hydropower development.
In response, the NDRC and the National Energy Administration recently issued the Circular on Promoting Hydropower Consumption in Southwest China and the Implementation Plan for Abandonment of Abandoned Abandoned Wind Abandoned, Promoting Transmission Transmission Channel Construction and Priority Dispatching of Power Grids Implementation of hydropower and consumption.
However, over the years, the power sector has been characterized by severe institutional and institutional barriers and overcapacity in power that can not be resolved in a single time and can not be solved in a short period of time by the power of policy alone. Power transmission through dispatching grids will enable the release of production capacity and maximize the benefits through rational development. Still need the government, industries and enterprises to make top-level design in the aspects of planning and formulation, optimization of resource allocation and breaking barriers, so that the southwestern hydropower will be able to make a living.