31results about How to "Play a role in peak regulation" patented technology

This invention discloses a liquefying method for natural gas used in gas peak-tuning and light hydrocarbon recovery including the following steps: 1, pre-cooling 2, pre-separation, 3, expansion cooling, in which, the high-pressure natural gas got in step 2 is expanded in a turbine expander to middle pressure sphere to form a gas-liquid mixture by reducing the temperature of the fluid, the high-pressure natural gas liquid got in step 2 is enthalpy-expanded to the mid-pressure sphere via a restrictor to reduce the fluid temperature and form a gas-liquid mixture, 4, separation of gas and liquid: separating the mixture got in step 3 in a separator to obtain liquid and middle-pressure natural gas, in which, the liquid one is input into a storage tank for storing, the middle-pressure gas is taken as the cold source of pre-cooling in step 1 then enters into the middle-pressure natural gas pipe network.

The invention discloses a determining method of photovoltaic transmission power limit considering variable correlation. According to the method, a random planning problem is built, the photovoltaic transmission power limit maximization is set as a target function, the correlation inside a photovoltaic power station, the correlation between region loads and the correlation of the photovoltaic power generation and the node load change are considered, the constraint conditions are inspected through the sampling on the photovoltaic power output, the traditional machine unit power output and the load level on the basis of a Latin hypercube sampling method, finally, an improved bacterial foraging algorithm is used for solving a planning problem, and the photovoltaic transmission power limit conforming to the conditions is calculated. The method provided by the method has the advantages that the problem of potential safety hazard after the photovoltaic network accessing since the photovoltaic transmission power limit does not conform to the actual production practice is solved, the planning work of the photovoltaic power station can be better guided, the sampling coverage rate is increased, the calculation quantity is reduced under the condition of not influencing the precision, the early stage optimization speed is accelerated, and meanwhile, the later stage optimization precision is also ensured.

The invention relates to the technical field of region heat supply / cold supply systems, and particularly discloses a region concentrated energy supply system. The region concentrated energy supply system comprises one main station, at least one main energy supply pipe, a plurality of user side energy supply devices and an auxiliary energy supply pipe, and the energy efficiency of the main station is larger than the energy efficiency of the user side energy supply devices; one end of the main energy supply pipe is connected with the main station, and the other end of the main energy supply pipe is connected to users at the far ends; and the user side energy supply devices are connected with at least one nearby user in a nearby manner, one end of the auxiliary energy supply pipe is connected with the user side energy supply devices, and the other end of the auxiliary energy supply pipe is connected to the main energy supply pipe. A region concentrated energy supply method is further disclosed. The region concentrated energy supply method includes the following steps that S1, when the users in a region are fewer, the user side energy supply devices are built at the positions close to the users; and S2, along with increase of the users in the region, the main station is built. By means of the region concentrated energy supply system and method, investment is greatly reduced; and meanwhile, the system conveying pump consumption and heat losses are reduced, and the system economic efficiency is good.

The invention relates to a high salt-bearing wastewater treatment process with an efficient combination steam source. In the high salt-bearing wastewater treatment process, the steam source in the evaporative crystallization procedure comprises a solar steam boiler and a fuel steam boiler which are used for adjusting the steam supplying amount and the steam supplying proportion through steam adjusting equipment. By the adoption of the high salt-bearing wastewater treatment process, energy consumption is lowered, and environmental pollution is effectively avoided; meanwhile, the situations that photoelectric heating efficiency is low and up-down fluctuation and instability happen are avoided, the electric storage condition in a common heat source power generation technology is avoided, solar energy and common fuel are reasonably used together, and thus the process can save more energy and is more environmentally friendly.