Improve protection documentation

docs/includes/protections.md

@@ -8,13 +8,14 @@ Protections will protect your strategy from unexpected events and market conditi
 
 #### Stoploss Guard
 
-`StoplossGuard` selects all trades within a `lookback_period` (in minutes), and determines if the amount of trades that resulted in stoploss are above `trade_limit` - in which case it will stop trading until this condition is no longer true.
+`StoplossGuard` selects all trades within a `lookback_period` (in minutes), and determines if the amount of trades that resulted in stoploss are above `trade_limit` - in which case trading will stop for `stop_duration`.
 
 ```json
 "protections": [{
         "method": "StoplossGuard",
         "lookback_period": 60,
-        "trade_limit": 4
+        "trade_limit": 4,
+        "stop_duration": 60
 }],
 ```
 
@@ -27,25 +28,72 @@ Protections will protect your strategy from unexpected events and market conditi
 If that ratio is below `required_profit`, that pair will be locked for `stop_duration` (in minutes).
 
 ```json
-"protections": [{
+"protections": [
+    {
         "method": "LowProfitpairs",
         "lookback_period": 60,
         "trade_limit": 4,
         "stop_duration": 60,
         "required_profit": 0.02
-}],
+    }
+],
 ```
 
-### Full example of Protections
+#### Cooldown Period
+
+`CooldownPeriod` locks a pair for `stop_duration` (in minutes) after selling, avoiding a re-entry for this pair for `stop_duration` minutes.
+
 
-The below example stops trading if more than 4 stoploss occur within a 1 hour (60 minute) limit.
 
 ```json
 "protections": [
+    {
+        "method": "CooldownPeriod",
+        "stop_duration": 60
+    }
+],
+```
+
+!!! Note:
+    This Protection applies only at pair-level, and will never lock all pairs globally.
+
+### Full example of Protections
+
+All protections can be combined at will, also with different parameters, creating a increasing wall for under-performing pairs.
+All protections are evaluated in the sequence they are defined.
+
+The below example:
+
+* stops trading if more than 4 stoploss occur for all pairs within a 1 hour (60 minute) limit (`StoplossGuard`).
+* Locks each pair after selling for an additional 10 minutes (`CooldownPeriod`), giving other pairs a chance to get filled.
+* Locks all pairs that had 4 Trades within the last 6 hours with a combined profit ratio of below 0.02 (<2%). (`LowProfitpairs`)
+* Locks all pairs for 120 minutes that had a profit of below 0.01 (<1%) within the last 24h (`60 * 24 = 1440`), a minimum of 7 trades
+
+```json
+"protections": [
+    {
+        "method": "CooldownPeriod",
+        "stop_duration": 10
+    },
     {
         "method": "StoplossGuard",
         "lookback_period": 60,
-        "trade_limit": 4
+        "trade_limit": 4,
+        "stop_duration": 60
+    },
+    {
+        "method": "LowProfitpairs",
+        "lookback_period": 360,
+        "trade_limit": 4,
+        "stop_duration": 60,
+        "required_profit": 0.02
+    },
+        {
+        "method": "LowProfitpairs",
+        "lookback_period": 1440,
+        "trade_limit": 7,
+        "stop_duration": 120,
+        "required_profit": 0.01
     }
     ],
 ```

freqtrade/constants.py

@@ -207,7 +207,7 @@ CONF_SCHEMA = {
                     'trade_limit': {'type': 'number', 'integer': 1},
                     'lookback_period': {'type': 'number', 'integer': 1},
                 },
-                'required': ['method', 'trade_limit'],
+                'required': ['method'],
             }
         },
         'telegram': {