35results about How to "Efficient and economical operation" patented technology

The present invention proposes a rail transit operation and maintenance management system based on a microservice architecture, including: the infrastructure as a service layer, which provides rail transit business data to the application as a service layer through the deployed first microservice, and responds to the operation and maintenance management control Instructions; the application is the service layer, which mobilizes the second microservice deployed corresponding to the business module associated with the rail transit business data for business processing, and provides users with business processing information display and operation and maintenance management control instruction operation prompts through the front-end business application, and Return operation and maintenance management control instructions to the infrastructure as a service layer. The solution provided by the embodiments of the present invention not only manages and controls the key facilities and equipment in the rail transit in an all-round way through a reasonable design of the micro-service architecture, but also can satisfy different operation and maintenance management requirements of the rail transit by deploying different micro-services. Maintenance requirements, improve the management level of operation and maintenance management, and ensure the normal, safe and efficient operation of facilities and equipment.

The invention relates to the technical field of photovoltaic micro-grid control, and particularly discloses a real-time coordination and control method of a photovoltaic micro-grid system. A central real-time optimal control layer and a local control layer are involved in the real-time coordination and control method. The central real-time optimal control layer collects the voltage and frequency of an AC bus of the photovoltaic micro-grid system, the charge state of a storage battery pack, the output power of photovoltaic power generation micro-sources, the output power of the storage battery pack, the output power of a super capacitor and the real-time power of a load in real time, generates a real-time coordination and control strategy and a secondary frequency modulation and scheduling plan, and issues the strategy and the plan to all local controllers. The local control layer coordinates and controls all the micro-sources in real time, and particularly achieves the scheduling plan issued by the central real-time optimal control layer. According to the real-time coordination and control method, a micro-grid central optimizing controller can manage, coordinate and control all the local controllers in a unified mode, the micro-grid can efficiently and economically run, the output power of the photovoltaic power generation unit is utilized to the maximum extent, the output power fluctuation and the tracking load change of the photovoltaic power generation unit are restrained, the running method of the micro-grid is reasonably adjusted, and energy balance is achieved.

The invention provides an on-line adjustment method for a KAPLAN unit, which has the advantages that: on the basis of not changing the prior KAPLAN computer control system, an actual water head signal which is input into the control system is intercepted and shielded based on the prior combination relationship, while a virtual water head signal is input into the control system to form a novel combination relationship between the relative opening degrees of guide blades and blades, and outflow conditions are adjusted to achieve the aim of adjusting the flow. Therefore, the on-line adjustment method can realize the real-time adjustment of a unit system of a hydropower station by means of the prior computer control system, and also can realize various adjustment targets in real time according to operation conditions of the hydropower station such as water head, the flow, and the distribution of the flow among units to realize the high-efficiency and economical operation of the hydropowerstation.

The invention discloses a thermal compensation type superheated steam coal drying system. Fault raw coal is broken and screened through a coal breaker, then passes through a coal bunker and then enters a superheated steam fluidized bed, the heat and mass transfer process is carried out inside, then the fault raw coal flows out of the bottom of the superheated steam fluidized bed, and the fault raw coal becomes upgraded coal after passing through a coal cooler. Superheated steam of the superheated steam fluidized bed is from a superheated steam extraction source. Water in the fault raw coal is heated and evaporated in the superheated steam fluidized bed into secondary steam, then the secondary steam is output out of the top of the superheated steam fluidized bed, the secondary steam passes through a circulating fan and then is introduced into the superheated steam fluidized bed to be subjected to heat exchange with the raw coal again, and the secondary steam becomes precipitated water after being condensed. Cooling feedwater introduced into the coal cooler serves as compensation heat source water to be introduced into a waste-heat heat exchanger and a solar heat exchanger through corresponding valves, wherein the waste-heat heat exchanger and the solar heat exchanger are connected in parallel. The waste-heat heat exchanger and the solar heat exchanger are both connected with an electric superheater through valves, and a superheated steam outlet of the electric superheater is connected with the superheated steam extraction source in parallel through a switching valve and then is connected into the superheated steam fluidized bed.

The invention discloses a boiler main steam temperature control method with frequent fluctuation of an AGC load instruction of a power grid, and belongs to the technical field of boiler main steam temperature control. According to the method, the variation trend of the main steam temperature of a boiler and the difference between the measured value of the main steam temperature of the boiler and the set value of the main steam temperature are comprehensively judged and controlled in advance through a main steam temperature super-differential feedforward control loop; and the desuperheating water jet control logic circuit for preventing the main steam temperature from overshooting is used for working conditions of frequent fluctuation of the AGC load instruction of the power grid, and the main steam temperature is controlled within a set range. According to the method, the main steam temperature regulation quality can be greatly improved, the fluctuation range of the main steam temperature of the boiler is reduced, and the unit efficiency is improved; after using this control scheme, the main steam temperature fluctuation range is reduced by 3-5 DEG C than before; and with the continuous development and maturity of the main steam temperature control technology, the foundation can be laid for improving the safe, stable and efficient economic operation of the unit and achieving the long-term goal of energy-saving optimization.

The invention discloses an online evaluation method for the operation state of an industrial process based on the idea of ​​instant learning. The method aims at the evaluation problem of the operation state of the industrial process with dynamic changes in process characteristics and a small amount of modeling data; firstly, according to the online test data, a modeling The optimization objective of the data selection part; then, establish the optimization objective of the state evaluation part; use the evolutionary optimization algorithm to solve the objective function, and obtain the modeling data and evaluation model at the same time; finally, use the established evaluation model and Bayesian posterior probability The evaluation index is used to obtain the evaluation results of the operating status. The invention considers the establishment of modeling data and evaluation model at the same time, and simultaneously solves two parts of optimization objectives in order to obtain the global optimal solution. The present invention improves the accuracy of operating state evaluation by means of more refined modeling, and can finally be applied to actual industrial production sites to ensure high-efficiency and economical operation of industrial processes with dynamic changes and small amount of modeling data.

The invention provides a method for controlling reactive voltage in an ultra-high voltage grid on the basis of improved economic voltage difference. For current simulation and problems in controlling the reactive voltage in the ultra-high voltage grid, the reactive voltage in the ultra-high voltage grid is balanced in real time by real-time coordination of low voltage side conventional reactive compensation with 500kV grid dynamic reactive compensation. The method allows real-time coordinated control for the low voltage side reactive compensation and 500kV grid side dynamic reactive compensation, and ensures real-time reactive power and efficient and economic operation of the ultra-high voltage grid. In addition, by the use of the method, operating frequency in conventional compensation switching can be reduced greatly, reactive loss of transformers is lowered further, and busbar voltage fluctuation caused by power fluctuation of tie lines is suppressed to a certain degree.

The patent of the present invention discloses an operation optimization method of the electrothermal coupling integrated energy system, which establishes the operation optimization objective function and constraint conditions of the electrothermal coupling integrated energy system, thereby establishing the operation optimization model of the electrothermal coupling integrated energy system, and then establishes the simulation of the heating network and thermal load state The model uses the temperature of heat medium injected into the heating network by the combined heat and power system in the operation optimization results as input to calculate the actual state of the heating network and heat load, and finally establishes the operation optimization process of the electric-thermal coupling integrated energy system, and compares the simulation model results with the optimization model As a result, the error value is judged. When the error of the two exceeds the allowable range, the resolution of the heat network and heat load model is reduced and the above steps are repeated, otherwise stop, so as to determine the appropriate resolution of the heat network and heat load model. This method can fully Considering the slow dynamic process of the heating network and heat load state changes in the dispatching command cycle, it can effectively guarantee the user comfort while realizing the efficient and economical operation of the system.

The invention discloses a control method of an embedded digital oscillation wireless remote controller. The remote controller can work as normal under the severe environment through a way of selectingan internal oscillator; and furthermore, the self-calibration is performed at idle moment according to different time intervals, different working voltages and different temperature differences, thesending carrier precision of the embedded digital ceramic resonator wireless remote controller can be improved as much as possible, and the efficient and economic operation of the embedded digital ceramic resonator wireless remote controller is realized.