Patent
Generator set primary frequency modulation dynamic compensation method and system based on steam enthalpy drop
Su Jianjun,Liu Weiming,Han Yingkun,Xiao Bing,Wang Rui,Zhang Ping,He Hongpeng,Song Yang,Han Jinsi,Su Peng,Sun Xiaoda,Guo Junying,Fan Wendi,Chen Huanyi +13 more
- 23 Jan 2018
1
TL;DR: In this paper, a generator set primary frequency modulation dynamic compensation method and system based on steam enthalpy drop was proposed, where the difference between work done by steam extraction of the steam turbine and work completely done for enabling the steam to flow out of a steam exhaust port was calculated.
read more
Abstract: The invention discloses a generator set primary frequency modulation dynamic compensation method and system based on steam enthalpy drop. Real-time parameters of a temperature, a pressure and flow ofadmission and various steam extraction and steam exhausts of a steam turbine are acquired; a steam enthalpy value parameter table is queried to obtain an enthalpy value of each parameter of the steam;a difference between work done by steam extraction of the steam turbine and work completely done for enabling the steam to flow out of a steam exhaust port is calculated; and by conversion, the workdifference is compensated to high-pressure admission of the steam turbine so as to complete correction on set primary frequency modulation load compensation. According to the invention, advanced and reasonable compensation of a set primary frequency modulation instruction is implemented, and the problem that primary frequency modulation load compensation of an extraction-condensation type unit generator set cannot reach the design requirements when a power grid frequency is fluctuated in a range of a small amplitude is solved, so that a technical index of primary frequency modulation of the generator set is improved.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Patent
Power-friendly primary frequency modulation control method and system of receiving-end grid
Li Jun,Su Jianjun,Wang Yong,Zhao Yan,Lei Ming,Liu Jun,Liao Dapeng,Wang Xin,Zhang Hui,Gao Song,Pang Xiangkun,Zhang Yong,Wang Ting,Du Pengcheng,Lu Kuan,Li Na +15 more
- 23 Oct 2018
TL;DR: In this article, a power-friendly primary frequency modulation control method and system of a receiving-end grid is presented, under the circumstances that the grid frequency of the receiving end grid exceeds a primary frequency modality dead zone range set by a grid-connected set, the actual power of the grid connected set is in an adjustable range, and the gridconnected set has the excess power compensation capability.
1
References
Patent
Control method and control system for improving and adjusting compensation ability of primary frequency modulation of steam extraction type steam turbine set
Han Yingkun,Pang Xiangkun,Lang Chengyu,Meng Xiangrong,Yao Changqing,Li Kelei,Yu Qingbin,Lin Bo,Gao Song +8 more
- 15 Mar 2017
TL;DR: In this paper, a control method and a control system for improving and adjusting the compensation ability of primary frequency modulation of a steam extraction type steam turbine set is presented, where the control method comprises the following steps: when real-time operation frequency of a power grid exceeds a frequency modulation dead zone set by the set, separately calculating the compensation instructions corresponding to a steam admission control valve and a steam exhausting valve.
8
Patent
Field calculating method for confirming influence on unit economy by exhaust steam pressure of power plant turbine
Yang Haisheng
- 10 Jul 2013
TL;DR: In this article, a field calculating method for confirming influence on unit economy by exhaust steam pressure of a power plant turbine is presented. But the method is based on a real-time computing function of DCS, influence of change of inlet steam flow of the turbine, main steam inlet pressure of the turbines, mainsteam inlet temperature, and hot reheat inlet inlet heat pressure.
5
Patent
AGC control system and method based on heating-extracting flow change
Han Yingkun,Pang Xiangkun,Bi Zhenfu,Meng Xiangrong,Li Kelei,Gao Song,Zhou Changlai,Yu Qingbin,Lin Bo +8 more
- 31 May 2017
TL;DR: In this paper, an AGC control system and a method based on heating-extracting flow change is presented, which comprises a set heating extracting flow metering device which is used for metering the set heating extracting flow and transmitting the set extracting flow to a processor.
3
Patent
Primary control optimal control device based on heat supply is drawn gas
Wang Tao,Wu Chaofeng,Song Yanqiang,Yin Hongfei,Li Jie,Zhang Xun,Zhang Zewei,Yu Xinbo +7 more
- 16 Jun 2017
TL;DR: In this paper, a primary control optimal control device based on heat supply is drawn gas, including the first signal collector and the 2nd signal collector, including analog quantity generator, second multiplier and high lower bound amplitude limiting module.
2
Patent
Primary frequency modulation ability compensation method for heating heat supply of fire coal steam turbine generator set
Xu Tong,Liu Jinfu,Tian Xueqin,Dang Dongsheng,Wang Xinlei,Cheng Jiangnan,Wan Jie,Song Chongming,Li Fei,Luo Jiasong,Yu Daren,Huang Zonghong,Tian Xing,Dong Xiaojing +13 more
- 20 Jun 2017
TL;DR: In this paper, a primary frequency modulation ability compensation method for heating heat supply of a fire coal steam turbine generator set was proposed, where the diversity factor was modified pertinently and the effect that when rotation speed changes by 1%, power generation power changes by 20% through primary frequency modulation was ensured.
1