Coordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control Algorithm
In addition to their own characteristics such as long duration of time delay and large inertia, the controlled objects of superheated steam temperature in large thermal power generating units are affected by a considerable number of factors and model variations under different loading conditions. Es...
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State Grid Energy Research Institute
2020-10-01
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| Series: | Zhongguo dianli |
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| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201909059 |
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| author | Sheng TONG Le LIU Pengfei WANG |
| author_facet | Sheng TONG Le LIU Pengfei WANG |
| author_sort | Sheng TONG |
| collection | DOAJ |
| description | In addition to their own characteristics such as long duration of time delay and large inertia, the controlled objects of superheated steam temperature in large thermal power generating units are affected by a considerable number of factors and model variations under different loading conditions. Especially with complicate coal quality or under volatile environment, the effect of superheated steam temperature control turns out to be very limited, which are based on traditional PID control and single variable generalized predictive control. In this paper, the models of superheated steam temperature system under three typical working conditions are established by virtue of recursive least square method, and then an optimization strategy of two-stage superheated steam temperature linkage control based on multivariable generalized predictive control (MGPC) is constructed. Meanwhile, the strategy is applied to the 330 MW subcritical units in a power plant. The practice results show that the optimal control strategy is effective to control the outlet steam temperature of superheater whenever the system is operated under stable loads or complicated variable loads. |
| format | Article |
| id | doaj-art-22a8dc4a3b0f4e06abb9e0db28194114 |
| institution | DOAJ |
| issn | 1004-9649 |
| language | zho |
| publishDate | 2020-10-01 |
| publisher | State Grid Energy Research Institute |
| record_format | Article |
| series | Zhongguo dianli |
| spelling | doaj-art-22a8dc4a3b0f4e06abb9e0db281941142025-08-20T02:52:42ZzhoState Grid Energy Research InstituteZhongguo dianli1004-96492020-10-01531021522310.11930/j.issn.1004-9649.201909059zgdl-53-9-tongshengCoordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control AlgorithmSheng TONG0Le LIU1Pengfei WANG2Guodian Electric Power Development Co., Ltd., Beijing 100101, ChinaBeijing Guodian Zhishen Control Technology Co., Ltd., Beijing 100085, ChinaBeijing Guodian Zhishen Control Technology Co., Ltd., Beijing 100085, ChinaIn addition to their own characteristics such as long duration of time delay and large inertia, the controlled objects of superheated steam temperature in large thermal power generating units are affected by a considerable number of factors and model variations under different loading conditions. Especially with complicate coal quality or under volatile environment, the effect of superheated steam temperature control turns out to be very limited, which are based on traditional PID control and single variable generalized predictive control. In this paper, the models of superheated steam temperature system under three typical working conditions are established by virtue of recursive least square method, and then an optimization strategy of two-stage superheated steam temperature linkage control based on multivariable generalized predictive control (MGPC) is constructed. Meanwhile, the strategy is applied to the 330 MW subcritical units in a power plant. The practice results show that the optimal control strategy is effective to control the outlet steam temperature of superheater whenever the system is operated under stable loads or complicated variable loads.https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201909059thermal power generating unitsuperheated steam temperaturemulti-modelmultivariable generalized predictive control (mgpc)two-stage linkage control |
| spellingShingle | Sheng TONG Le LIU Pengfei WANG Coordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control Algorithm Zhongguo dianli thermal power generating unit superheated steam temperature multi-model multivariable generalized predictive control (mgpc) two-stage linkage control |
| title | Coordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control Algorithm |
| title_full | Coordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control Algorithm |
| title_fullStr | Coordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control Algorithm |
| title_full_unstemmed | Coordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control Algorithm |
| title_short | Coordinative Two-Stage Superheated Steam Temperature Linkage Control Based on Multivariable Generalized Predictive Control Algorithm |
| title_sort | coordinative two stage superheated steam temperature linkage control based on multivariable generalized predictive control algorithm |
| topic | thermal power generating unit superheated steam temperature multi-model multivariable generalized predictive control (mgpc) two-stage linkage control |
| url | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.201909059 |
| work_keys_str_mv | AT shengtong coordinativetwostagesuperheatedsteamtemperaturelinkagecontrolbasedonmultivariablegeneralizedpredictivecontrolalgorithm AT leliu coordinativetwostagesuperheatedsteamtemperaturelinkagecontrolbasedonmultivariablegeneralizedpredictivecontrolalgorithm AT pengfeiwang coordinativetwostagesuperheatedsteamtemperaturelinkagecontrolbasedonmultivariablegeneralizedpredictivecontrolalgorithm |