Dynamic Safety Assessment in Nonlinear Hydropower Generation Systems

Table 3

Training data of the HGS in the load rejection transient process.

Relative values of variables in HGS (p.u.)
Speed of hydraulic turbine	Pressure of spiral case	Pressure of draft tube	Pressure of surge tank	Safety level
1	1.0547	0.94	0.9948	Safety
0.2971	0.9867	0.8389	0.9995	Safety
0.2121	0.9965	0.8052	0.9986	Safety
0.149	0.9942	0.8354	0.9976	Safety
0.1271	1.0017	0.9234	1.0005	Safety
0.1065	1.0194	1.0009	1.0033	Safety
0.1175	1.0397	0.9063	1.004	Safety
0.1	1.0192	0.9	1.0046	Safety
1.2282	1.075	0.9908	0.9995	Tolerable
1.2913	1.1025	0.9637	1.0059	Tolerable
1.3543	1.143	0.9063	1.0113	Tolerable
1.2282	1.317	1.2917	0.9998	Tolerable
1.1651	1.2843	1.3692	1.004	Tolerable
1.1116	1.2516	1.4265	1.0084	Tolerable
0.9951	1.2111	1.43	1.0097	Tolerable
0.921	1.1731	1.3827	1.0062	Tolerable
0.8264	1.1329	1.3284	1.0033	Tolerable
0.7524	1.1178	1.2238	0.9989	Tolerable
0.6783	1.0949	1.1226	0.9967	Tolerable
0.5713	1.09	1.0784	1.0024	Tolerable
0.4767	1.0773	1.0075	1.0062	Tolerable
0.4136	1.0472	0.9365	1.0052	Tolerable
0.3286	1.0092	0.9063	1.0008	Tolerable
1.4188	1.1708	0.8389	1.0141	Unstable
1.4394	1.2464	1.021	1.0027	Unstable
1.4078	1.287	1.0854	0.9963	Unstable
1.3653	1.317	1.1599	0.9935	Unstable
1.3228	1.3625	1.2273	0.9957	Unstable
1.4503	1.1859	0.8288	1.0126	Risk
1.4928	1.1908	0.8052	1.0132	Risk
1.5024	1.1784	0.8017	1.0139	Risk
1.4709	1.1656	0.8082	1.0122	Risk
1.4928	1.1607	0.8862	1.0091	Risk
1.4613	1.2062	0.9873	1.0065	Risk