62:
is a rough index of the amount pondage needed when the stream flow is constant and the plant is operational during specific periods. It is calculated by the ratio of total inflow hours per week to the hours the power plant will be operated in that same period. For example, if a river has an inflow
30:
power plant. Such a power plant has considerably less storage than the reservoirs of large dams and conventional hydroelectric stations which can store water for long periods such as a dry season or year. With pondage, water is usually stored during periods of low electricity demand and hours when
121:
If power is used for twelve hours per day and during the inactive hours, relatively all inflows can be stored, then power can be doubled during active hours. In 12 hours there are 43,200 seconds and in 1 acre⋅ft (1,233 m) there are 43,560 cu ft (1,233 m). This gives an
46:
As a daily hydropeaking cycle of a hydro power plant with pondage results in fast rising river levels downstream, environmental regulations often restrict the full use of the dispatchability as a
113:
166:
58:
Because of the possibility of limited pondage, calculating its effect on power generation is important in determining how often the plant can be operated. The
122:
estimation and guide that for twelve hours of pondage, there must be as much storage available in the pond as cubic feet per section received.
246:
273:
219:
150:
40:
27:
69:
268:
184:
36:
47:
32:
160:
242:
236:
215:
190:
146:
140:
209:
262:
63:
for seven days a week and the plant operates for five of those days for eight hours:
194:
118:
24-hour inflows and plant operation would have a pondage factor of one.
214:(Rev. ed.). New Delhi: New Age International (P) Ltd. p. 20.
39:
during wet seasons. Ample pondage allows a power plant to meet hourly
241:(Rev. 2nd ed.). New Delhi: New Age International. p. 288.
23:
22:
usually refers to the comparably small water storage behind the
211:
Generation, distribution, and utilization of electrical energy
139:
Dwivedi, A.K. Raja, Amit
Prakash Srivastava, Manish (2006).
16:
Water storage above the weir of a hydroelectric power plant
183:
Joel De Witt Justin, William
Pitcher Creager (1950).
72:
108:{\displaystyle {\frac {7\times 24}{5\times 8}}=4.2}
31:the power plant is inactive, enabling its use as a
107:
238:Hydrology : principles, analysis, and design
145:. New Delhi: New Age International. p. 354.
8:
165:: CS1 maint: multiple names: authors list (
73:
71:
131:
158:
7:
178:
176:
14:
43:for a period of a week or more.
28:run-of-the-river hydroelectric
1:
290:
274:Power station technology
235:Raghunath, H.M. (2009).
142:Power Plant Engineering
189:. Wiley. p. 162.
186:Hydroelectric handbook
109:
208:Wadhwa, C.L. (1993).
110:
37:base load power plant
35:in dry seasons and a
70:
33:peaking power plant
105:
248:978-81-224-1825-5
97:
41:load fluctuations
281:
269:Hydroelectricity
253:
252:
232:
226:
225:
205:
199:
198:
180:
171:
170:
164:
156:
136:
114:
112:
111:
106:
98:
96:
85:
74:
289:
288:
284:
283:
282:
280:
279:
278:
259:
258:
257:
256:
249:
234:
233:
229:
222:
207:
206:
202:
182:
181:
174:
157:
153:
138:
137:
133:
128:
86:
75:
68:
67:
56:
17:
12:
11:
5:
287:
285:
277:
276:
271:
261:
260:
255:
254:
247:
227:
220:
200:
172:
151:
130:
129:
127:
124:
116:
115:
104:
101:
95:
92:
89:
84:
81:
78:
60:pondage factor
55:
52:
15:
13:
10:
9:
6:
4:
3:
2:
286:
275:
272:
270:
267:
266:
264:
250:
244:
240:
239:
231:
228:
223:
221:81-224-0073-6
217:
213:
212:
204:
201:
196:
192:
188:
187:
179:
177:
173:
168:
162:
154:
152:81-224-1831-7
148:
144:
143:
135:
132:
125:
123:
119:
102:
99:
93:
90:
87:
82:
79:
76:
66:
65:
64:
61:
53:
51:
49:
44:
42:
38:
34:
29:
25:
21:
237:
230:
210:
203:
185:
141:
134:
120:
117:
59:
57:
45:
19:
18:
54:Calculation
263:Categories
126:References
161:cite book
91:×
80:×
195:1609321
20:Pondage
245:
218:
193:
149:
48:peaker
26:of a
243:ISBN
216:ISBN
191:OCLC
167:link
147:ISBN
24:weir
103:4.2
265::
175:^
163:}}
159:{{
83:24
50:.
251:.
224:.
197:.
169:)
155:.
100:=
94:8
88:5
77:7
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.