110results about How to "Improve operation management level" patented technology

The invention provides a real-time data collecting and fault positioning system of a power distribution network and a working method thereof. The real-time data collecting and fault positioning system comprises transformer substation voltage collecting units, a plurality of line units, a real-time data server, a background monitoring computer and a handheld terminal, wherein each transformer substation is provided with one transformer substation voltage collecting unit; each transformer substation voltage collecting unit comprises one intelligent voltage detection terminal; each line unit comprises three fault positioning and data collecting sensors and one communication and calculation terminal; the intelligent voltage detection terminal, the communication and calculation terminal and the handheld terminal are in wireless communication with the real-time data server; the three fault positioning and data collecting sensors of the same line unit are in short-distance wireless communication with the communication and calculation terminal. The working method mainly comprises the step of carrying out real-time data collection and fault judgment. The information precision of power transmission line data which is collected in real time is high, short circuit and grounding faults are rapidly and accurately judged, the time of powering off and overhauling is shortened, the quantity of fault line patrolling workers is reduced and manpower and material resources are saved.

The invention relates to a power supply system key information acquisition system and communication method based on Beidou satellite transmission, belonging to the field of remote monitoring of a power supply system. The system consists of a main station side system and a factory station side system, wherein the main station side system comprises a main station side data server and a Beidou satellite command airplane, and the Beidou satellite command airplane is connected with the main station side data server; the factory station side system consists of a three-phase acquisition circuit, a multi-path analogue-to-digital conversion integrated circuit, an intelligent electric energy meter, a Beidou satellite subscriber machine, a processor, a display and a data storage device, and the three-phase acquisition circuit is connected with the multi-path analogue-to-digital conversion integrated circuit; the multi-path analogue-to-digital conversion integrated circuit is connected with the processor; and the processor is respectively connected with the intelligent electric energy meter, the Beidou satellite subscriber machine, the data storage device and the display. The system has the advantages of reinforcing the accuracy, the timeliness and the safety of key data transmission, monitoring a distributive mini-type hydropower station in real time, improving the running management level of the mini-type hydropower station and optimizing the power flow distribution of a power grid so as to reduce the loss of the power grid and exert the effects of energy saving and emission reduction.

The invention discloses an intelligent substation warning and aid decision making system for processing potential safety hazards or faults in a substation according to the expert knowledge base technology. The intelligent substation warning and aid decision making system comprises a center control computer and an intelligent substation monitoring system, and the center control computer is further provided with an expert knowledge base module, an expert knowledge explaining module, a warning and decision inference machine module and a system data warehouse module. By means of the system, the essence of faults is found out from the aspect of ways of thinking of experts, and expert knowledge is used for forming solving plans for assisting fault processing personnel in dealing with the faults. Through warning message layered optimization, comprehensive induction, fault inference model establishing and accident inversion, the intelligent substation warning and aid decision making system can be effectively used for guiding and helping operating personnel to make correct judgment about accidents or abnormities quickly; meanwhile, all kinds of data and operation states of the substation are analyzed and processed in real time so that potential safety hazards of the system can be found, corresponding warning messages can be generated automatically, and the operation management level and power supply reliability of the substation are improved.

The invention relates to an automation device for use in a civil aircraft environment control system function test, which belongs to the technical field of aircraft manufacturing. The automation device comprises an air source processing component, an electric air heating furnace, an air heating furnace controller, a main pipeline system, a pneumatic valve control component, a metal hose component, a wireless sensing communication module, a programmable logic controller (PLC) control module and an upper machine monitoring computer. In the invention, an aircraft pressure cabin and air conditioner pipeline leakage amount test, a cabin pressure regulating system test, a cabin air temperature regulating system function test and an anti-ice system function test are carried out by using an on-spot air source of an aircraft assembly plant in place of an engine or an auxiliary power unit (APU) unit, so that a plurality of test items in the aircraft environment control function test can be completed, and the requirements of aircraft mass production on the quality and efficiency improvement on the environment control function test in a final assembly process are met.

The invention discloses an online boiler monitoring and management system. Operational parameters of a boiler are acquired by an online boiler monitoring device. Acquired data are transmitted to an online boiler monitoring server through a network communication system by internet. The online boiler monitoring server stores and comprehensively processes the data and allows for man-machine interaction by means of image-text reports, audible and visual alarm, short-text emails and the like. Based on data acquisition, data processing and report file generation by a management platform system, boiler operation management level is increased, safe, energy-saving and environment-friendly operation of the boiler is achieved, and dynamic sharing of the data in multi-level departments is achieved.

The invention provides an energy efficiency analysis method of a generator set. The method comprises: acquiring generator set parameters, set performance target value and actual values; calculating external condition deviations according to boiler actual coal consumption, current environment temperature, turboset circulating water temperature, turboset heat-supply power generation ratio and turboset power generation capacity of the generator set parameters; respectively calculating a boiler efficiency deviation, a turboset efficiency deviation and a station service power consumption rate deviation through a boiler performance test, a turboset performance test and station service power consumption rate testing performance test under multiple working conditions, and calculating a device performance deviation according to the boiler efficiency deviation, the turboset efficiency deviation and the station service power consumption rate deviation; calculating expected values of set actual operation according to generator set design parameters, the external condition deviations and the device performance deviation; and respectively calculating difference values between the expected values and the target values and difference values between the expected values and the actual values, and calculating generator set energy efficiency according to preset weights and corresponding membership functions of the two types of difference values.

The invention provides a method for calculating the output loss of a wind power field and a unit and a device thereof, relating to the technical field of wind power generation. The lost generated energy of a failed wind turbine unit within the fault time segment is obtained through referring the generated energy of a plurality of wind turbine units which work normally around the failed wind turbine unit within the fault time segment or utilizing an expert system. The invention has the advantages of calculating accurately the output loss caused by the abnormal work of the wind power field and the wind turbine units due to various causes so as to be beneficial to improving the running management level of the wind power field, providing accurate calculation basis for all application requiringoutput power loss data of wind power plants and providing accurate basis for performance evaluation of employees of the wind power plants, calculation of carbon emission reduction, economic benefit analysis of the wind power plants as well as solution of economic disputes caused by the abnormal working of the wind power plants and the wind turbine units due to various causes.

The invention discloses an acquisition system of cathode protection data of a buried pipeline. The acquisition system comprises one or more data acquiring and storing devices, and a data analyzing and early-warning device, wherein the data acquiring and storing devices are in communication connection with the data analyzing and early-warning device through a network; the data acquiring and storing devices acquire the cathode protection data of the buried pipeline; after the acquired cathode protection data of the buried pipeline is processed and stored, the data acquiring and storing devices transmit the cathode protection data of the buried pipeline to the data analyzing and early-warning device; the data analyzing and early-warning device receives the cathode protection data of the buried pipeline, which is transmitted by the data acquiring and storing devices, and performs early-warning analysis; early warning is performed according to the result of the early-warning analysis. The acquisition system disclosed by the invention realizes acquisition and monitoring, and centralized supervision and management of the stray current and the cathode protection data of the buried pipeline, so that the timeliness, the reliability and the authenticity of the stray current and the cathode protection data are guaranteed; besides, corresponding manpower resources are saved, and the operation management level of stray current protection and cathode protection for the pipelines are effectively improved.

The invention discloses a device for testing the characteristics of breaker opening and closing coils. The device comprises a controller, a coil resistance testing unit and a coil insulation and number-of-turns testing unit. The controller is respectively connected with a signal source, the coil resistance testing unit and the coil insulation and number-of-turns testing unit, the coil resistance testing unit and the coil insulation and number-of-turns testing unit perform testing through a coil to be tested, tested data are sent to the controller, the controller performs fault diagnosis on the breaker opening and closing coils in real time, and therefore real-time monitoring of the breaker opening and closing coils is realized. According to the device, the performance and the quality of the coils are estimated through testing of the characteristics of the coils, quality defects and fault hidden dangers are eliminated, the reliability and the stability of products in use are guaranteed, and the operation safety of a power system is improved.

The invention discloses a method for evaluating power quality comprehensively based on the Vague sets and the improved technique for order preference by similarity to ideal solution and the application thereof. The method consists of the steps of: monitoring the common connection points of an offshore wind power plant, and acquiring the simulation data of power quality indicators; determining the weight vectors (i)W(/i) of the power quality indicators of each evaluation object; indicating the scores of the indicators of each evaluation object with Vague values; determining an absolute positive ideal solution and an absolute negative ideal solution; calculating the distance between each evaluation object and the absolute positive ideal solution and the distance between each evaluation object and the absolute negative ideal solution and the relative closeness of each evaluation object, and comprehensively evaluating and sequencing the power quality according to the calculated results. By means of this invention, the weights are determined more objectively and less subjectively, and in the meantime, the weight of indicators and the weights of the true membership function, the false membership function and the abstention part of the indicators are considered, so that the evaluation result can be closer to the actual situation. The method plays a very significant role in enhancing the transparency of the power market and improving the power supply quality of the power system.

The invention discloses a controller workload prediction method and system. The controller workload prediction method comprises the steps of building a multiple regression model according to controller workload prediction related indexes and controller workload prediction sample data; importing air traffic flow situation index prediction data in a controlled sector into the multiple regression model, and obtaining a controller workload prediction result. According to the controller workload prediction method and system, the air traffic flow situation multidimensional indexes which influence controller workload are considered completely and comprehensively, and thereby effective prediction for controller workload is achieved. The designed controller workload prediction system can be applied to an engineering unit and has great operability.

The present invention discloses a system and method of testing a high-voltage circuit breaker. The system comprises a speed measurement sensor, a distance measurement sensor, a current sensor, a data acquisition and processing system and an industrial control computer. The insulation characteristics, the electrical characteristics and the mechanical characteristics, measured by the speed measurement sensor, the distance measurement sensor and the current sensor, of a high-voltage circuit breaker are sent to the industrial control computer through the data acquisition and processing system; the insulation characteristics are the leakage current and the insulation resistor of the high-voltage circuit breaker; the electrical characteristics are the opening and closing current and the measurement current; and the mechanical characteristics are the total motion time, the motion amount and the motion merge-joint direction of the high-voltage circuit breaker, and the accelerated speed, the acceleration time, the uniform motion speed, the uniform motion time, the deceleration process of the motion, the overshoot of the motion and the overshoot time when the motion starts. The system and method of testing a high-voltage circuit breaker are able to discover an abnormal state and predicate a fault period at the early state of the fault so as to fully make a service preparation and provide a technology basis for reasonably making the maintenance plan of a device, therefore the operation reliability of the power grid is improved.

The invention discloses an intelligentized sewage treatment expert system, and belongs to the technical field of environmental engineering .The expert system comprises a data storage device and a display device; input data and a data analysis result can be displayed in the display device; the display device can display two first-stage modules including the operating management problem query module and the effluent quality standard exceeding reason reasoning module; the effluent quality standard exceeding reason reasoning module is provided with five second-stage modules including the effluent TN quality standard exceeding reason judging module, the effluent NH3-N quality standard exceeding reason judging module, the effluent COD quality standard exceeding reason judging module, the effluent SS quality standard exceeding reason judging module and the effluent TP quality standard exceeding reason judging module .According to the expert system, sewage treatment field expert-level experience and knowledge are integrated into the same system platform, a more convenient way capable of effectively solving the practical problems is supplied to technicians in the sewage treatment field, checking can be conducted in time, an effective solution can be presented in time, and the operating management level of a sewage treatment plant is increased.

The invention relates to a distribution network maintenance time optimization method and system. Related data of each feeder device in the distribution network are acquired to generate a distributionnetwork maintenance scheme; and the distribution network maintenance scheme is set as a chromosome, a genetic algorithm is adopted to solve the pre-built distribution network state maintenance model to obtain the optimal maintenance time of each feeder, wherein the related data of each feeder device in the distribution network comprise the health index of a device on each feeder of the distribution network. The technical scheme provided in the invention solves the problem of large deviation of reliability prediction evaluation decision making under a small time scale, and can also guide and support the distribution network state maintenance work with a feeder, a substation or an associated device combined, and leap of a scientific, quantitative and economic maintenance technology is realized.

The invention relates to the technical field of power detection, in particular to an alternating-current intrusion fault warning and maloperation prevention device. Aiming at resistive alternating-current intrusion, an appropriate capacitive load is input between a direct-current power bus and the ground automatically according to an intrusion alternating-current voltage amplitude in order to reduce the intrusion alternating-current amplitude of an alternating current power source into a direct-current power supply system, and accordingly risks of protection maloperation caused by alternating-current intrusion faults of the direct-current power supply system can be reduced. The alternating-current intrusion fault warning and maloperation prevention device is applicable to monitoring of alternating-current intrusion faults of direct-current power supply systems at different voltage classes of 220V/110V/48V and the like in substations or power plants and can be used for detection of various alternating-current intrusion faults in a range of 0-285V, warning time is shorter than 0.2s, and recording of alternating-current waveforms and intrusion waveforms is realized; equipment operation reliability of the substations or the power planes can be improved beneficially, maloperation is prevented, and serious and major accidents are reduced.

The invention discloses an active low-voltage power distribution network fault positioning optimization method based on a hierarchical model. The active low-voltage power distribution network fault positioning optimization method comprises the following steps of: performing hierarchical equivalence on a power distribution network; setting a plurality of monitoring nodes and reporting monitoring information; encoding a fault state of a fault current information monitoring section reported by means of the monitoring nodes; constructing a monitoring node switching function of the power distribution network by utilizing a monitoring node switching state information matrix and a section state information matrix; introducing a decision-making variable Di of information distortion to form a faulthypothesis vector; and introducing a section state Si and a distortion factor into the design of the decision-making variable to design a target function. According to the active low-voltage power distribution network fault positioning optimization method, a weight coefficient of a key node is optimized, stability and precision of a positioning algorithm are provided, a fault information reporting threshold value is designed according to access conditions of distributed power supplies of an actual low-voltage power distribution network, the number of the distributed power supplies in the model is reduced, the hierarchical model is optimized, positioning efficiency and precision are improved, and the operation management level of a power supply department is improved.

The invention discloses a load shedding and dynamic partitioning coordination control method considering electric power safety accident risk, and belongs to the technical fields of an electric power system and automation thereof. According to the load shedding and dynamic partitioning coordination control method, the number of the maximum available dynamic partitioning operations is determined according to overload safety margin of equipment under preconceived faults; whether the equipment overload problem under the preconceived faults can be solved or not is verified under the maximum operating number constraint after each dynamic partitioning operation with qualified comprehensive control performance is implemented; if the equipment overload problem can be solved, the optimal dynamic partitioning operation combination is selected therefrom; if the equipment overload problem cannot be solved, the load-shedding performance cost ratio of each alternative load-shedding point is calculated by considering the electric power safety accident risk; and the load with the highest performance cost ratio is cut off in an iteration manner until the overload problem under the preconceived faults is solved. By adoption of the load shedding and dynamic partitioning coordination control method, the electric power safety accidents caused when the overload problem is solved by load shedding can be effectively reduced or eliminated, so that the operating management level of the power grid can be improved.

The invention discloses a method for determining optimal coagulating agent feeding amount and optimal pH value in water treatment, which comprises the following steps of: (1) determining boundary condition of coagulating agent feeding amount, and determining the molar ratio range of metal ions in the coagulating agent and the total phosphorus in the water to be treated; (2) determining boundary condition of pH value and determining the range of pH value; and (3) conducting simplex optimization experiments by collecting a water sample, placing into a container, selecting three points in the molar ratio range of metal ions in the coagulating agent and the total phosphorus in the water sample to be treated, stirring, settling, collecting liquid below liquid level, measuring the concentration of normal phosphate and total phosphorus, and determining the optimal coagulating agent feeding amount and optimal pH value in water treatment according to the result. The inventive method has simple operation and can conveniently determine the optimal coagulating agent feeding amount and optimal pH value in water treatment; and the total phosphorus removal rates using each of the coagulating agents all reach optimal level. The inventive method improves the operational management level of sewage treatment plants and water regeneration plants.

The invention relates to an automatic analysis method, system and equipment for a distribution network line operation problem. The method comprises the following steps of: determining power supply capability data, operation risk data, line new user access data and line scheduling data by acquiring current data, user installation capacity data, installation user quantity, line account data, business work order data, line topology data and user account data of a distribution network line; and analyzing and outputting the identified operation problem of the distribution network line based on a preset condition so as to realize automatic revelation of the operation problem of the distribution network line. According to the method, automatic statistical analysis of distribution network line operation problems is realized, manual statistical analysis is replaced, the working efficiency is improved, and the workload is reduced; meanwhile, automatic revelation of the operation problem of the distribution network is realized, a foundation is laid for improving the operation management level of the distribution network, and the high-quality power supply requirement of a power user is ensured.