《英文版 模拟量控制系统负荷变动试验导则.doc》由会员分享，可在线阅读，更多相关《英文版 模拟量控制系统负荷变动试验导则.doc（2页珍藏版）》请在三一办公上搜索。
1、Test Guide of Load Variation of Modulating Control System1 PurposeTo inspect the ability of the modulating control system of the assembling unit to be adaptable to the variation in load. 2 ConditionsThe assembling unit has already been at the full load and had the ability for safe and stable operati
2、on through the on-load commissioning, the functions of the coordinated control system have already been put into operation through test, all the modulating control systems have been entered into their unattended operation, the adjustment quality can meet the Quality Inspection and Evaluation Criteri
3、a for the Adjustment and Trial Operation of Thermal Power Engineering, and the test shall be conducted under the normal working conditions of 70%100%MCR. 3 Variation Range of the LoadThe amplitude of the load variation in the load variation test is 15%MCR, and the actual variation rate of load is 3%
4、MCR/min. 4 Recorded Main Parameters and Applied Instruments in the Test4.1 Main parameters: Actual unit power, unit load command, main steam pressure, velocity-stage pressure, main steam temperature, reheat steam temperature, flow rate of boiler feed water, flow rate of main steam, water level in st
5、eam drum, oxygen content of fume, pressure of boiler chamber, aggregate coal supply quantity, water level of deaerator, water level of coagulator, and the water level of every heater.4.2 Generally, for the data of every main parameter, the data and trend record are preceded by taking the transmitter
6、 for automatic control system through the decentralized control system or the certificated multiple-pen recorder. 5 Test Procedures5.1 The automatic regulating loops of the following primary systems shall be operated gradually: Main steam pressure regulating systemBoiler feedwater regulating system
7、Main steam temperature regulating systemReheat steam temperature regulating systemBoiler chamber pressure regulating systemAir and oxygen supply quantity calibrating and regulating system5.2 After the automatic control system of every loop works stably, the boiler-turbine coordination mode by the co
8、ordinated control system shall be carried out to calibrate the dynamic parameter. 5.3 The load variation test shall be carried out after the unit coordinated control operates stably. 5.3.1 The variation rate of load is set as 3%MCR/min. 5.3.2 The object load command of the unit shall be reduced in a
9、 step quantity of 15%MCR. The load response condition shall be observed, the unit load and the variation data in all the parameters shall be recorded. 5.3.3 After the unit load and operation parameters are stable, the object load command of the unit shall be increased in a step quantity of 15%MCR. T
10、he load response condition shall be observed, the unit load and the variation data in all the parameters shall be recorded. 6 EvaluationCriteria for Evaluation on the Load Variation Test of Modulating Control SystemControlled parameterDynamic deviation during the load variation processStatic deviati
11、on during the load variation processMain steam pressure+/-0.6MPa+/-0.3MPaMain steam temperature+/-l0+/-5Reheat steam temperature+/-l0+/-5Water level in steam drum+/-60mm+/-30mmPressure of boiler chamber+/-200Pa+/-100PaOxygen content of fume+/-2%+/-1%Water level of deaerator+/-250mm+/-100mmWater leve
12、l of coagulator+/-200mm+/-100mmWater level of high pressure heater+/-70mm+/-35mmWater level of low pressure heater+/-70mm+/-35mmActual power+/-3%MCR+/-1.5%MCRThe criteria listed in the above table mainly are applicable to the home-made 300MW steam turbine-generator unit of the coal-fired drum boiler
13、 that is equipped with the direct-firing coal pulverizing system. As for the other types of units and the once-through boiler units, these listed criteria shall be adjusted appropriately depending on the physical circumstances. Division of Construction Coordination of the Ministry of Power IndustryMay, 1996
