電力系統(tǒng)調(diào)度自動化

1、Electric power system dispatch automation1.Feature of electric power system v Electrical energy can not be stored up massively vTransit process rapidlyvStructure complex and hugeThe five utilities of national grid in ChinaNortheast Grid；North China Grid；Central China Grid；Northwest Grid；South Grid.N

2、ortheast Grid, North China Grid, East China Grid, Central China Grid, Northwest Grid, South Grid have been formed a national network.1. Different resource in different places can complete each other and improve the economic operation.2. Use of time difference in different places can reduce the gap b

3、etween peak and trough，reduce the total installed capacity.3. Reduce backup capacity, under the malfunction they can complementary to each other, improve the system reliability.The advantage of the modern electric power systerm 4.The loads in every region are compensated to make sure frequency and v

4、oltage stable. 5.Convenient to install huge assembling unit, improve the efficient of the electric power system.1. Easily occur a chain of large scale malfunctions, hard to analyze the safety ,stability problem prominent, and a higher demand for dispatch. 2. How to coordinate between the various sub

5、systems, between the hydroelectricity and coal-fired power , how to consider global and local interests, is a problem of challenge. The disadvantage of the modern electric power systerm2. Power system operating requirementsSafety Ensure continuity of supply, satisfy customer demand for electricityQu

6、ality Ensure power quality (voltage, frequency, waveform)Economy Improve power system economics Environmentally) Reduce the adverse impact on the environment Qualified power QualityGood economic CharacteristicsEnsure safe and reliable power supplyThe basic running of the power system Requirements3.

7、Power system componentsPower system consists of generation, transmission, transformation, distribution, electrical equipment componentsPrime motorHeat load Power sectionElectric generatorBoosting transformerCircuitStep-down transformerThe power grid Power SystemsElectrical power systemPower UserElec

8、trical equipment(3) Secondary system：In the power system on primary monitoring equipment, relay protection devices, remote communication devices and other components and auxiliary systems. This is an information system, also known as the secondary system.(1) Primary system：Power system is an energy

9、system, also called primary system.(2) Primary equipment：Electrical equipment of primary system (5)Power system：It is an integral part of the secondary system, generally refers to the electrical equipment and system of automatic monitoring control and scheduling.(4)Secondary equipment：The devices in

10、 the secondary system is called secondary equipment （or device）4.Classification of power system automation Electric power system dispatch automation Power plant automation Substation automationGeneration and transmission automated SchedulingDistribution automationThermal power plant automationHydrop

11、ower plant automationDividedby runningmanagement area Frequency and active power of electric power system automation control Power system voltage and reactive power automatic control Automatic control of power system security Power system circuit breaker automatic controlDivided by the angle of the

12、automatic control5. Power system scheduling tasks1）Electricity load forecasting 2）Formulate the generating, operation mode and operation plan3）For security monitoring and security analysis 4）Command operations and dealing with incidents Electric power system dispatch automation task 6.Power system scheduling objectives （1）Ensure safe levels of system operation; （2）Ensure quality of power supply (frequency and voltage of system); （3）Ensure system running economy; （4）Guarantee effective recovery measures after an accident; Explanation：（1）The first three s