Sage Journals: Discover world-class research

Abstract

In this paper, a new fast control system of steam turbine inlet valve is designed, which is composed of the fast closing system and the fast opening system. For the first time, this paper proposes that the fast closing system is designed by means of the special structure of the slide valve in an oil servo motor on the basis of the transformation of the hydraulic control system of steam turbine inlet valve. For the first time, a differential oil discharge fast opening system is designed by use of two cartridge valves. The mathematical model of electro-hydraulic fast control system is presented. With the use of simulation software Advanced Modeling Environment for Simulation of engineering systems , the curves of parameters such as piston displacement, piston velocity, oil pressure of upper and nether cavities of oil servo motor, and flow flux of upper and nether cavities of oil servo motor are obtained. The fast closing time of the piston for whole journey from the simulation results is 0.36 s. The fast opening time of the piston for whole journey from the simulation results is 1.55 s. According to the designed structure of the fast control system, the fast control experiment system is built. The fast closing time of the piston for whole journey from the experiment results is 0.22 s. The fast opening time of the piston for the whole journey from the experiment results is 1.97 s. The simulation and experimental results show that the designed fast control system can realize the fast closing and fast opening of the inlet valve. The fast closing time of the fast control system is <0.5 s, and the fast opening time of the fast control system is <3 s, which meets the fast control time requirement of the steam turbine inlet valve. Compared with the existing fast control system products, the fast control system and the inlet valve servo regulation system share a set of oil sources. And the fast control system has the advantages of low cost, simple structure, easy implementation, etc.

Keywords

Steam turbine inlet valve fast control system hydraulic system Advanced Modeling Environment for Simulation of engineering systems

Get full access to this article

View all access options for this article.

References

Kielian

Lis

. Turbine fast valving study by the use of a steam turbine. In: 22nd International Conference Electronics, Palanga, Lithuania, 18–20 June 2018, pp.1–5.

Mozina

. Impact of power system instability on generator protection. In: Proceedings of the 48th IEEE Industrial & Commercial Power Systems Conference, Louisville, America, 20–24 May 2012, pp.1–8.

Prioste

Mendes

PPC

Ferreira

. Power system transient stability enhancement by fast valving. In: Proceeding of IEEE/PES Transmission and Distribution Conference, Sao Paulo, Brazil, 8–11 November 2004, pp.639–644.

Sun

Chen

Tang

. Enhancing transient stability of system by coordinated control of fast valves and SVC. In: Proceedings of the 7thWorld Congress on Intelligent Control and Automation, Chongqing, China, 25–27 June 2008, pp.7413–7416.

Koudelka

Gromotovic

Batora

, et al. Factors affecting transient stability simulation possibilities in PSCAD and MODES. In: Proceedings of the 21st International Scientific Conference on Electric Power Engineering, Brno, Czech Republic, 19–21 October 2020, pp.1–5.

Mohamed

Karady

Yousuf

. New strategy agents to improve power system transient stability. World Acad Sci Eng Technol 2005; 3: 142–147.

Kievets

Suvorov

Askarov

, et al. The use of HRTSim to optimize the control parameters of fast turbine valving control. Electr Eng 2020; 2: 1–9.

Prokhorov

Borovikov

Andreev

. Application of hybrid real-time power system simulator for setting up and close loop testing of protection and control equipment. In: Proceedings of the 7th International Forum on Strategic Technology, Tomsk, Russia, 18–21 September 2012, pp.1–4.

Ruban

Andreev

Borovikov

. Software and hardware simulation tools of automatic load-frequency control system. In: Proceedings of the 2nd International Conference on Industrial Engineering Applications and Manufacturing, Tomsk, Russia, 19–20 May 2016, pp.1–4.

10.

Andreev

Yury

Alexander

, et al. Application of hybrid real-time power system simulator for research and setting a momentary and sustained fast turbine valving control. IET Gener Transm Distrib 2018; 12: 133–141.

11.

Voumvoulakis

Hatziargyriou

. A particle swarm optimization method for power system dynamic security control. IEEE Trans Power Syst 2010; 25: 1032–1041.

12.

Bhat

Bhatti

Kothari

. Transient stability improvement of power system using fuzzy operated steam diversion valve. Int J Power Energy Conversion 2010; 2: 191–201.

13.

Patel

Pagalthivarthi

. Artificial neural network based turbine fast valving for enhancement of power system transient stability. J Elect Eng 2006; 57: 3–11.

14.

Cai

Zhang

, et al. Reliable analysis on fast valving of ultra-supercritical unit under transient fault conditions. In: Proceedings of the ASME 2017 Power Conference Joint With ICOPE-17, Charlotte, America, 26–30 June 2017, pp.1–6.

15.

Lakmewan

Wadduwage

Fernando

DGR

. A simulation-based procedure to determine optimum range of settings of fast valving action of steam turbines to enhance frequency stability. J Inst Eng (India) 2020; 53: 23–32.

16.

Vaiman

. Stability analysis and control of power systems with sustained fast turbine valving and generator tripping. In: 2018 IEEE Power and Energy Society General Meeting, Portland, America, 5–10 August 2018, pp.1–5.

17.

Tina

Licciardello

Stefanelli

. Conventional techniques for improving emergency control of transient stability in renewable-based power systems. In: Proceedings of the 9th International Renewable Energy Congress, Hammamet, Tunisia, 20–22 March 2018, pp.1–6.

18.

Yoon

Jang

Moon

. A study of the application of fast valving and braking resistor for an intelligent SPS. Int J Electr Power Energy Syst 2013; 53: 818–823.

19.

Patel

Bhatti

Kothari

. Improvement of power system transient stability by coordinated operation of fast valving and braking resistor. IEE Proc Gener Transm Distrib 2003; 150: 311–316.

20.

Patel

Bhatti

Kothari

. A modified approach to transient stability enhancement with fast valving and braking resistor applications. Int J Electr Power Energy Syst 2006; 28: 729–738.

21.

Pondini

Colla

Signorini

. Models of control valve and actuation system for dynamics analysis of steam turbines. Appl Energy 2017; 207: 208–217.

22.

Agreža

Avsec

Strušnik

. Entropy and exergy analysis of steam passing through an inlet steam turbine control valve assembly using artificial neural networks. Int J Heat Mass Tran 2020; 156: 119897.

Supplementary Material

Please find the following supplemental material available below.

For Open Access articles published under a Creative Commons License, all supplemental material carries the same license as the article it is associated with.

For non-Open Access articles published, all supplemental material carries a non-exclusive license, and permission requests for re-use of supplemental material or any part of supplemental material shall be sent directly to the copyright owner as specified in the copyright notice associated with the article.

0.00 MB

0.06 MB

0.07 MB

0.06 MB

0.07 MB

0.09 MB

Design,simulation,and experiment research on fast control system of steam turbine inlet valve

Abstract

Keywords

Get full access to this article

References

Supplementary Material