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China's new energy vehicle charging operation and construction seminar held in Beijing recently. At the seminar, the smart electric charging system of EV group introduced by Teledin New Energy Co., Ltd. of Qingdao attracted the interest of participating experts. Compared with the traditional electric vehicle charging pile, smart charging system not only to achieve pile-free charging, waterproof anti-rolling. And based on cloud computing, you can achieve sweep code charging, convenient and...
(1) high-voltage power distribution system: modern high-rise buildings are using two independent 10kV power supply. General high-pressure single-bus segment, automatic switching, mutual backup. The number of bus segments, and the power line into the line to adapt. Only when the power supply is a master and a backup, only consider the use of single-bus non-segmented junction. Almost all of the power into the line using cable into the line. (2) billing methods, the use of high for the meter....
Recently, "Electric Vehicle Group Smart Charging System Qingdao Science and Technology Achievement Evaluation and New Energy Vehicle Charging System Construction Seminar" was held in Qingdao Te Ruide Electric Co., Ltd., the National Clean Vehicle Action Leader Group Leader Wang Binggang Leader More than 50 senior experts from the national power system, new energy vehicle manufacturers, power battery manufacturers, research institutes and electric vehicle demonstration cities...
1 Power Operation Power Monitoring System Introduction Power operating power monitoring system is generated with the automation of power system. The system can monitor the parameters of AC power supply, DC control power supply, standby power supply and switch status in substation, fault alarm and other operations. In this way, the abnormal situation of the power system can be found in time, and precautionary measures can be taken in advance to ensure the continuous and reliable operation of the...
With the rapid economic development in our country, the contradiction between supply and demand of electricity is becoming fiercer and fiercer. For enterprises, safety and energy saving means reducing costs and increasing profits, leading to fierce market competition. In the energy conservation, the wish for the benefit of mankind, Beijing Lu Chi Technology Development Co., Ltd. and Tsinghua University jointly developed from Logintel Lu Chi series of energy-saving protection products. HC...
Asian Pump News] Barrel pneumatic conveying pump adopts positive pressure pneumatic conveying to convey powdery material, which is widely used in conveying power plant fly ash, cement, cement raw material, mineral powder and other materials. Xiao Bian to introduce the thermal power plant ash conveying system warehouse pump structure and working principle. Bunker pump First, thermal power plant ash conveying system Bunker pump structure In the warehouse pump ash control a large number of...
(A) Steam boiler automatic control system on the importance of boiler operation. According to relevant regulations, boilers with an evaporation of more than 6 tons per hour should be supplied with water from the control valve of the instrument, and water should be supplied to the boiler continuously and uniformly. Water level regulation in boiler operation should be maintained at normal water level and allowed to fluctuate within 25 mm of normal water level. The smaller the water level...
Fuji Electric has developed a new package for SiC power semiconductor components (below: power components). According to Fuji Electric introduced, the volume is about the original Si power components package 1/4. In addition, miniaturization and reliability are achieved through the use of wire bonding technology that does not require wire bonding, an insulating backplane with low thermal resistance, and an encapsulating resin with high heat resistance. Fuji Electric also used the package to...
1, high-voltage circuit breaker opening and closing buffer play what role? A: The function of the opening damper is to prevent the components of the circuit breaker from damaging due to the huge impact generated when the spring releases energy. The function of the closing damper is to prevent the closing force and make the closing too deep and damage the casing. 2, what is the circuit breaker free tripping? A: The circuit breaker in the closing process at any time, if the protective action...
(Tender 3) Datang International Power Generation Co., Ltd. Tender Notice for Maintenance of Auxiliary Engine Control System and Production Management System of Douhe Power Plant in 2017 In accordance with the Law of the People’s Republic of China on Tendering and Bidding and related laws and regulations, and following the principles of openness, fairness, impartiality, and good faith, Datang International Power Generation Co., Ltd. (hereinafter referred to as “the tenderer”) has a steep...
Microcomputer relay protection tester wiring check: Differential protection is widely used in power systems in transformers, buses, and short-circuit protection. General differential protection simulation test is more difficult, mainly for the following reasons: First, the differential protection of the current loop is more, two-turn transformer needs high and low voltage on both sides of the current, three-turn transformer needs high, medium and low voltage three-side current Bus protection...
1 Introduction With the arrival of the information age, thermal power plants, power systems, and power enterprise groups will form an information network that automates the production process and manages automation. On the other hand, with the deepening of power reform, the electricity market economic pattern separated from the factory network will gradually form. Under such circumstances, if the power plant wants to obtain better economic benefits, it must reduce costs, increase efficiency,...
Today, with the rapid development of science and technology, county-level power companies are still using the most primitive methods of human meter reading, carrying ladders, riding motorcycles and taking village streets to read meters, regardless of wind, rain or cold One day. Meter reading is currently the most costly task for county-level power companies. In particular, as the size of rural power grids expands, the number of users increases rapidly. Manpower meter reading workloads are...
Difference between Fire Equipment Power Monitoring System and Fire Power Supply - Musical Bird The difference between the fire-fighting equipment power monitoring system and the fire-fighting power supply lies in the following two points: 1. The fire-fighting equipment power monitoring system is based on the national standard “Fire-fighting equipment power monitoring system”. The system consists of fire-fighting equipment power status monitor, power bus, communication bus and its connected...
Overview In the 1980s, DCS (Digital Distributed Control System) began to enter the field of automatic control of power plants. Because of its positive effects on safety production and economic benefits, it was impossible for any control system of the past to be compared with it. Therefore, DCS It is widely used at power stations. At present, 300 MW and above units, whether domestic or imported, use DCS without exception. Even 200 MW and 100 MW units are using DCS to retrofit. Even the 25 MW and...
Abstract: The application of fieldbus control system in the industrial field is a new beginning. With the emergence of various sensors and transmitters, a new fieldbus control system has begun a new era. The article mainly introduces the principle, characteristics of the FCS and its application in power plants. I. INTRODUCTION With the rapid development of control technology, computer technology and communication technology, digitalization as a trend has been permeating field devices from the...
[China Instrument Network Instrument R&D] Recently, the Guangdong Provincial Bureau of Quality and Technical Supervision convened the AQSIQ Scientific and Technological Plan Project "Automatic Calibration System for SOA-Based Power Quality Analyzer (Project Number: 2013QK258)". The expert group believed that the project met the acceptance requirements and agreed to pass the acceptance. The power quality analyzer is a measuring instrument for monitoring and recording the power...
1Matlab/APROS Control Algorithm Verification Platform The MATLAB Toolbox is integrated in the Matlab7.0 or later version released by The MathWorks, USA. It is an OPC client data access software that provides a communication mechanism with the OPC server. APROS provides standard The OPC interface can be used as both an OPC client and an OPC server. It can be easily connected with other applications or external control devices with OPC standard interfaces to realize data interaction. This paper...
Author: Lvguo Juan Summary: I. Overview 1.1 Project and Main Auxiliaries Overview Yang Electric Co., Ltd. is located on the northwest side of Wantou Town in the northeastern suburb of Yangzhou City. The Yangzhou Power Generation Co., Ltd. project is the construction of two new 300MW coal-fired generating units. The boiler is a 300MW domestically-imported subcritical parameter, natural circulation, single steam package, single furnace, tangentially-fired tangent, an intermediate reheat, balanced...
With the vigorous development of nuclear power, nuclear power projects are increasing. How to manage nuclear power projects, especially design change management, is particularly important. The quality of design change management has become one of the important factors that determine the success or failure of nuclear power project management. The relevant standards for nuclear power such as HAF003 also explicitly states that “The technical impact of the changes must be carefully considered and...
Introduction In order to implement the Central Western Development Strategy and Sustainable Development Strategy, China's power industry has entered a new phase of building a nationwide unified power grid with the opportunity to build the Three Gorges Power Grid, and promote the interconnection of large regions and then build a nationwide unified dispatch. "West Power Transmission to the West" is an objective requirement of China's distribution of resources and productivity,...
Foreword Sichuan Lutianhua (Group) Co., Ltd. Power Plant was designed by our institute in the early 1960s and is equipped with 4 sets of 74MW natural gas generators. After the high cost of power generation, two 25MW generators were dismantled in 2000. Two 12MW generators are now connected to the main 6kVI busbar of the power plant. Usually, a single operation with a small amount of active power is used as a company-wide reactive power compensation and it is also important for the company. Load...
Abstract According to the different forms of the output signal of the flowmeter, an algorithm for calculating the cumulative flow in the DCS system of the unit is presented. The specific implementation of various flow accumulation algorithms in the TCS-3000 DCS system is detailed, and the accuracy in the DCS system of the unit is solved. Calculate the cumulative flow problem. The thermal power plant not only has a complex production process, but also has a wide variety of working media (water,...
1. Introduction Fieldbus was developed and developed in the late 20th century and is used for field intelligent device interconnection communication networks in the fields of process automation, manufacturing automation, and building automation. The Foundation Fieldbus (FF) has become a highly competitive bus technology with its advanced technology. After years of development, it has formed a mature, open, all-digital industrial communication system. The Fieldbus Foundation’s China Market...
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